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dpc.c
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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 
58 
59 
60 /*--------------------- Static Definitions -------------------------*/
61 
62 /*--------------------- Static Classes ----------------------------*/
63 
64 /*--------------------- Static Variables --------------------------*/
65 //static int msglevel =MSG_LEVEL_DEBUG;
66 static int msglevel =MSG_LEVEL_INFO;
67 
68 const unsigned char acbyRxRate[MAX_RATE] =
69 {2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108};
70 
71 
72 /*--------------------- Static Functions --------------------------*/
73 
74 /*--------------------- Static Definitions -------------------------*/
75 
76 /*--------------------- Static Functions --------------------------*/
77 
78 static unsigned char s_byGetRateIdx(unsigned char byRate);
79 
80 
81 static void
82 s_vGetDASA(unsigned char *pbyRxBufferAddr, unsigned int *pcbHeaderSize,
83  PSEthernetHeader psEthHeader);
84 
85 static void
86 s_vProcessRxMACHeader(PSDevice pDevice, unsigned char *pbyRxBufferAddr,
87  unsigned int cbPacketSize, bool bIsWEP, bool bExtIV,
88  unsigned int *pcbHeadSize);
89 
90 static bool s_bAPModeRxCtl(
91  PSDevice pDevice,
92  unsigned char *pbyFrame,
93  int iSANodeIndex
94  );
95 
96 
97 
98 static bool s_bAPModeRxData (
99  PSDevice pDevice,
100  struct sk_buff* skb,
101  unsigned int FrameSize,
102  unsigned int cbHeaderOffset,
103  int iSANodeIndex,
104  int iDANodeIndex
105  );
106 
107 
108 static bool s_bHandleRxEncryption(
109  PSDevice pDevice,
110  unsigned char *pbyFrame,
111  unsigned int FrameSize,
112  unsigned char *pbyRsr,
113  unsigned char *pbyNewRsr,
114  PSKeyItem *pKeyOut,
115  bool *pbExtIV,
116  unsigned short *pwRxTSC15_0,
117  unsigned long *pdwRxTSC47_16
118  );
119 
120 static bool s_bHostWepRxEncryption(
121 
122  PSDevice pDevice,
123  unsigned char *pbyFrame,
124  unsigned int FrameSize,
125  unsigned char *pbyRsr,
126  bool bOnFly,
127  PSKeyItem pKey,
128  unsigned char *pbyNewRsr,
129  bool *pbExtIV,
130  unsigned short *pwRxTSC15_0,
131  unsigned long *pdwRxTSC47_16
132 
133  );
134 
135 /*--------------------- Export Variables --------------------------*/
136 
137 /*+
138  *
139  * Description:
140  * Translate Rcv 802.11 header to 802.3 header with Rx buffer
141  *
142  * Parameters:
143  * In:
144  * pDevice
145  * dwRxBufferAddr - Address of Rcv Buffer
146  * cbPacketSize - Rcv Packet size
147  * bIsWEP - If Rcv with WEP
148  * Out:
149  * pcbHeaderSize - 802.11 header size
150  *
151  * Return Value: None
152  *
153 -*/
154 static void
155 s_vProcessRxMACHeader(PSDevice pDevice, unsigned char *pbyRxBufferAddr,
156  unsigned int cbPacketSize, bool bIsWEP, bool bExtIV,
157  unsigned int *pcbHeadSize)
158 {
159  unsigned char *pbyRxBuffer;
160  unsigned int cbHeaderSize = 0;
161  unsigned short *pwType;
162  PS802_11Header pMACHeader;
163  int ii;
164 
165 
166  pMACHeader = (PS802_11Header) (pbyRxBufferAddr + cbHeaderSize);
167 
168  s_vGetDASA((unsigned char *)pMACHeader, &cbHeaderSize, &pDevice->sRxEthHeader);
169 
170  if (bIsWEP) {
171  if (bExtIV) {
172  // strip IV&ExtIV , add 8 byte
173  cbHeaderSize += (WLAN_HDR_ADDR3_LEN + 8);
174  } else {
175  // strip IV , add 4 byte
176  cbHeaderSize += (WLAN_HDR_ADDR3_LEN + 4);
177  }
178  }
179  else {
180  cbHeaderSize += WLAN_HDR_ADDR3_LEN;
181  };
182 
183  pbyRxBuffer = (unsigned char *) (pbyRxBufferAddr + cbHeaderSize);
184  if (!compare_ether_addr(pbyRxBuffer, &pDevice->abySNAP_Bridgetunnel[0])) {
185  cbHeaderSize += 6;
186  }
187  else if (!compare_ether_addr(pbyRxBuffer, &pDevice->abySNAP_RFC1042[0])) {
188  cbHeaderSize += 6;
189  pwType = (unsigned short *) (pbyRxBufferAddr + cbHeaderSize);
190  if ((*pwType!= TYPE_PKT_IPX) && (*pwType != cpu_to_le16(0xF380))) {
191  }
192  else {
193  cbHeaderSize -= 8;
194  pwType = (unsigned short *) (pbyRxBufferAddr + cbHeaderSize);
195  if (bIsWEP) {
196  if (bExtIV) {
197  *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 8); // 8 is IV&ExtIV
198  } else {
199  *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 4); // 4 is IV
200  }
201  }
202  else {
203  *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN);
204  }
205  }
206  }
207  else {
208  cbHeaderSize -= 2;
209  pwType = (unsigned short *) (pbyRxBufferAddr + cbHeaderSize);
210  if (bIsWEP) {
211  if (bExtIV) {
212  *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 8); // 8 is IV&ExtIV
213  } else {
214  *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 4); // 4 is IV
215  }
216  }
217  else {
218  *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN);
219  }
220  }
221 
222  cbHeaderSize -= (ETH_ALEN * 2);
223  pbyRxBuffer = (unsigned char *) (pbyRxBufferAddr + cbHeaderSize);
224  for(ii=0;ii<ETH_ALEN;ii++)
225  *pbyRxBuffer++ = pDevice->sRxEthHeader.abyDstAddr[ii];
226  for(ii=0;ii<ETH_ALEN;ii++)
227  *pbyRxBuffer++ = pDevice->sRxEthHeader.abySrcAddr[ii];
228 
229  *pcbHeadSize = cbHeaderSize;
230 }
231 
232 
233 
234 
235 static unsigned char s_byGetRateIdx (unsigned char byRate)
236 {
237  unsigned char byRateIdx;
238 
239  for (byRateIdx = 0; byRateIdx <MAX_RATE ; byRateIdx++) {
240  if (acbyRxRate[byRateIdx%MAX_RATE] == byRate)
241  return byRateIdx;
242  }
243  return 0;
244 }
245 
246 
247 static void
248 s_vGetDASA(unsigned char *pbyRxBufferAddr, unsigned int *pcbHeaderSize,
249  PSEthernetHeader psEthHeader)
250 {
251  unsigned int cbHeaderSize = 0;
252  PS802_11Header pMACHeader;
253  int ii;
254 
255  pMACHeader = (PS802_11Header) (pbyRxBufferAddr + cbHeaderSize);
256 
257  if ((pMACHeader->wFrameCtl & FC_TODS) == 0) {
258  if (pMACHeader->wFrameCtl & FC_FROMDS) {
259  for(ii=0;ii<ETH_ALEN;ii++) {
260  psEthHeader->abyDstAddr[ii] = pMACHeader->abyAddr1[ii];
261  psEthHeader->abySrcAddr[ii] = pMACHeader->abyAddr3[ii];
262  }
263  }
264  else {
265  // IBSS mode
266  for(ii=0;ii<ETH_ALEN;ii++) {
267  psEthHeader->abyDstAddr[ii] = pMACHeader->abyAddr1[ii];
268  psEthHeader->abySrcAddr[ii] = pMACHeader->abyAddr2[ii];
269  }
270  }
271  }
272  else {
273  // Is AP mode..
274  if (pMACHeader->wFrameCtl & FC_FROMDS) {
275  for(ii=0;ii<ETH_ALEN;ii++) {
276  psEthHeader->abyDstAddr[ii] = pMACHeader->abyAddr3[ii];
277  psEthHeader->abySrcAddr[ii] = pMACHeader->abyAddr4[ii];
278  cbHeaderSize += 6;
279  }
280  }
281  else {
282  for(ii=0;ii<ETH_ALEN;ii++) {
283  psEthHeader->abyDstAddr[ii] = pMACHeader->abyAddr3[ii];
284  psEthHeader->abySrcAddr[ii] = pMACHeader->abyAddr2[ii];
285  }
286  }
287  };
288  *pcbHeaderSize = cbHeaderSize;
289 }
290 
291 
292 
293 
294 //PLICE_DEBUG ->
295 
296 void MngWorkItem(void *Context)
297 {
298  PSRxMgmtPacket pRxMgmtPacket;
299  PSDevice pDevice = (PSDevice) Context;
300  //printk("Enter MngWorkItem,Queue packet num is %d\n",pDevice->rxManeQueue.packet_num);
301  spin_lock_irq(&pDevice->lock);
302  while(pDevice->rxManeQueue.packet_num != 0)
303  {
304  pRxMgmtPacket = DeQueue(pDevice);
305  vMgrRxManagePacket(pDevice, pDevice->pMgmt, pRxMgmtPacket);
306  }
307  spin_unlock_irq(&pDevice->lock);
308 }
309 
310 
311 //PLICE_DEBUG<-
312 
313 
314 
315 bool
316 device_receive_frame (
317  PSDevice pDevice,
318  PSRxDesc pCurrRD
319  )
320 {
321 
322  PDEVICE_RD_INFO pRDInfo = pCurrRD->pRDInfo;
323 #ifdef PLICE_DEBUG
324  //printk("device_receive_frame:pCurrRD is %x,pRDInfo is %x\n",pCurrRD,pCurrRD->pRDInfo);
325 #endif
326  struct net_device_stats* pStats=&pDevice->stats;
327  struct sk_buff* skb;
328  PSMgmtObject pMgmt = pDevice->pMgmt;
329  PSRxMgmtPacket pRxPacket = &(pDevice->pMgmt->sRxPacket);
330  PS802_11Header p802_11Header;
331  unsigned char *pbyRsr;
332  unsigned char *pbyNewRsr;
333  unsigned char *pbyRSSI;
334  PQWORD pqwTSFTime;
335  unsigned short *pwFrameSize;
336  unsigned char *pbyFrame;
337  bool bDeFragRx = false;
338  bool bIsWEP = false;
339  unsigned int cbHeaderOffset;
340  unsigned int FrameSize;
341  unsigned short wEtherType = 0;
342  int iSANodeIndex = -1;
343  int iDANodeIndex = -1;
344  unsigned int ii;
345  unsigned int cbIVOffset;
346  bool bExtIV = false;
347  unsigned char *pbyRxSts;
348  unsigned char *pbyRxRate;
349  unsigned char *pbySQ;
350  unsigned int cbHeaderSize;
351  PSKeyItem pKey = NULL;
352  unsigned short wRxTSC15_0 = 0;
353  unsigned long dwRxTSC47_16 = 0;
354  SKeyItem STempKey;
355  // 802.11h RPI
356  unsigned long dwDuration = 0;
357  long ldBm = 0;
358  long ldBmThreshold = 0;
359  PS802_11Header pMACHeader;
360  bool bRxeapol_key = false;
361 
362 // DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---------- device_receive_frame---\n");
363 
364  skb = pRDInfo->skb;
365 
366 
367 //PLICE_DEBUG->
368 #if 1
369  pci_unmap_single(pDevice->pcid, pRDInfo->skb_dma,
370  pDevice->rx_buf_sz, PCI_DMA_FROMDEVICE);
371 #endif
372 //PLICE_DEBUG<-
373  pwFrameSize = (unsigned short *)(skb->data + 2);
374  FrameSize = cpu_to_le16(pCurrRD->m_rd1RD1.wReqCount) - cpu_to_le16(pCurrRD->m_rd0RD0.wResCount);
375 
376  // Max: 2312Payload + 30HD +4CRC + 2Padding + 4Len + 8TSF + 4RSR
377  // Min (ACK): 10HD +4CRC + 2Padding + 4Len + 8TSF + 4RSR
378  if ((FrameSize > 2364)||(FrameSize <= 32)) {
379  // Frame Size error drop this packet.
380  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---------- WRONG Length 1 \n");
381  return false;
382  }
383 
384  pbyRxSts = (unsigned char *) (skb->data);
385  pbyRxRate = (unsigned char *) (skb->data + 1);
386  pbyRsr = (unsigned char *) (skb->data + FrameSize - 1);
387  pbyRSSI = (unsigned char *) (skb->data + FrameSize - 2);
388  pbyNewRsr = (unsigned char *) (skb->data + FrameSize - 3);
389  pbySQ = (unsigned char *) (skb->data + FrameSize - 4);
390  pqwTSFTime = (PQWORD) (skb->data + FrameSize - 12);
391  pbyFrame = (unsigned char *)(skb->data + 4);
392 
393  // get packet size
394  FrameSize = cpu_to_le16(*pwFrameSize);
395 
396  if ((FrameSize > 2346)|(FrameSize < 14)) { // Max: 2312Payload + 30HD +4CRC
397  // Min: 14 bytes ACK
398  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---------- WRONG Length 2 \n");
399  return false;
400  }
401 //PLICE_DEBUG->
402 #if 1
403  // update receive statistic counter
404  STAvUpdateRDStatCounter(&pDevice->scStatistic,
405  *pbyRsr,
406  *pbyNewRsr,
407  *pbyRxRate,
408  pbyFrame,
409  FrameSize);
410 
411 #endif
412 
413  pMACHeader=(PS802_11Header)((unsigned char *) (skb->data)+8);
414 //PLICE_DEBUG<-
415  if (pDevice->bMeasureInProgress == true) {
416  if ((*pbyRsr & RSR_CRCOK) != 0) {
417  pDevice->byBasicMap |= 0x01;
418  }
419  dwDuration = (FrameSize << 4);
420  dwDuration /= acbyRxRate[*pbyRxRate%MAX_RATE];
421  if (*pbyRxRate <= RATE_11M) {
422  if (*pbyRxSts & 0x01) {
423  // long preamble
424  dwDuration += 192;
425  } else {
426  // short preamble
427  dwDuration += 96;
428  }
429  } else {
430  dwDuration += 16;
431  }
432  RFvRSSITodBm(pDevice, *pbyRSSI, &ldBm);
433  ldBmThreshold = -57;
434  for (ii = 7; ii > 0;) {
435  if (ldBm > ldBmThreshold) {
436  break;
437  }
438  ldBmThreshold -= 5;
439  ii--;
440  }
441  pDevice->dwRPIs[ii] += dwDuration;
442  return false;
443  }
444 
445  if (!is_multicast_ether_addr(pbyFrame)) {
446  if (WCTLbIsDuplicate(&(pDevice->sDupRxCache), (PS802_11Header) (skb->data + 4))) {
447  pDevice->s802_11Counter.FrameDuplicateCount++;
448  return false;
449  }
450  }
451 
452 
453  // Use for TKIP MIC
454  s_vGetDASA(skb->data+4, &cbHeaderSize, &pDevice->sRxEthHeader);
455 
456  // filter packet send from myself
457  if (!compare_ether_addr((unsigned char *)&(pDevice->sRxEthHeader.abySrcAddr[0]), pDevice->abyCurrentNetAddr))
458  return false;
459 
460  if ((pMgmt->eCurrMode == WMAC_MODE_ESS_AP) || (pMgmt->eCurrMode == WMAC_MODE_IBSS_STA)) {
461  if (IS_CTL_PSPOLL(pbyFrame) || !IS_TYPE_CONTROL(pbyFrame)) {
462  p802_11Header = (PS802_11Header) (pbyFrame);
463  // get SA NodeIndex
464  if (BSSDBbIsSTAInNodeDB(pMgmt, (unsigned char *)(p802_11Header->abyAddr2), &iSANodeIndex)) {
465  pMgmt->sNodeDBTable[iSANodeIndex].ulLastRxJiffer = jiffies;
466  pMgmt->sNodeDBTable[iSANodeIndex].uInActiveCount = 0;
467  }
468  }
469  }
470 
471  if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
472  if (s_bAPModeRxCtl(pDevice, pbyFrame, iSANodeIndex) == true) {
473  return false;
474  }
475  }
476 
477 
478  if (IS_FC_WEP(pbyFrame)) {
479  bool bRxDecryOK = false;
480 
481  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"rx WEP pkt\n");
482  bIsWEP = true;
483  if ((pDevice->bEnableHostWEP) && (iSANodeIndex >= 0)) {
484  pKey = &STempKey;
485  pKey->byCipherSuite = pMgmt->sNodeDBTable[iSANodeIndex].byCipherSuite;
486  pKey->dwKeyIndex = pMgmt->sNodeDBTable[iSANodeIndex].dwKeyIndex;
487  pKey->uKeyLength = pMgmt->sNodeDBTable[iSANodeIndex].uWepKeyLength;
488  pKey->dwTSC47_16 = pMgmt->sNodeDBTable[iSANodeIndex].dwTSC47_16;
489  pKey->wTSC15_0 = pMgmt->sNodeDBTable[iSANodeIndex].wTSC15_0;
490  memcpy(pKey->abyKey,
491  &pMgmt->sNodeDBTable[iSANodeIndex].abyWepKey[0],
492  pKey->uKeyLength
493  );
494 
495  bRxDecryOK = s_bHostWepRxEncryption(pDevice,
496  pbyFrame,
497  FrameSize,
498  pbyRsr,
499  pMgmt->sNodeDBTable[iSANodeIndex].bOnFly,
500  pKey,
501  pbyNewRsr,
502  &bExtIV,
503  &wRxTSC15_0,
504  &dwRxTSC47_16);
505  } else {
506  bRxDecryOK = s_bHandleRxEncryption(pDevice,
507  pbyFrame,
508  FrameSize,
509  pbyRsr,
510  pbyNewRsr,
511  &pKey,
512  &bExtIV,
513  &wRxTSC15_0,
514  &dwRxTSC47_16);
515  }
516 
517  if (bRxDecryOK) {
518  if ((*pbyNewRsr & NEWRSR_DECRYPTOK) == 0) {
519  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ICV Fail\n");
520  if ( (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA) ||
521  (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPAPSK) ||
522  (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) ||
523  (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA2) ||
524  (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPA2PSK)) {
525 
526  if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) {
527  pDevice->s802_11Counter.TKIPICVErrors++;
528  } else if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_CCMP)) {
529  pDevice->s802_11Counter.CCMPDecryptErrors++;
530  } else if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_WEP)) {
531 // pDevice->s802_11Counter.WEPICVErrorCount.QuadPart++;
532  }
533  }
534  return false;
535  }
536  } else {
537  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"WEP Func Fail\n");
538  return false;
539  }
540  if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_CCMP))
541  FrameSize -= 8; // Message Integrity Code
542  else
543  FrameSize -= 4; // 4 is ICV
544  }
545 
546 
547  //
548  // RX OK
549  //
550  //remove the CRC length
551  FrameSize -= ETH_FCS_LEN;
552 
553  if (( !(*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI))) && // unicast address
554  (IS_FRAGMENT_PKT((skb->data+4)))
555  ) {
556  // defragment
557  bDeFragRx = WCTLbHandleFragment(pDevice, (PS802_11Header) (skb->data+4), FrameSize, bIsWEP, bExtIV);
558  pDevice->s802_11Counter.ReceivedFragmentCount++;
559  if (bDeFragRx) {
560  // defrag complete
561  skb = pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx].skb;
562  FrameSize = pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx].cbFrameLength;
563 
564  }
565  else {
566  return false;
567  }
568  }
569 
570 
571 // Management & Control frame Handle
572  if ((IS_TYPE_DATA((skb->data+4))) == false) {
573  // Handle Control & Manage Frame
574 
575  if (IS_TYPE_MGMT((skb->data+4))) {
576  unsigned char *pbyData1;
577  unsigned char *pbyData2;
578 
579  pRxPacket->p80211Header = (PUWLAN_80211HDR)(skb->data+4);
580  pRxPacket->cbMPDULen = FrameSize;
581  pRxPacket->uRSSI = *pbyRSSI;
582  pRxPacket->bySQ = *pbySQ;
583  HIDWORD(pRxPacket->qwLocalTSF) = cpu_to_le32(HIDWORD(*pqwTSFTime));
584  LODWORD(pRxPacket->qwLocalTSF) = cpu_to_le32(LODWORD(*pqwTSFTime));
585  if (bIsWEP) {
586  // strip IV
587  pbyData1 = WLAN_HDR_A3_DATA_PTR(skb->data+4);
588  pbyData2 = WLAN_HDR_A3_DATA_PTR(skb->data+4) + 4;
589  for (ii = 0; ii < (FrameSize - 4); ii++) {
590  *pbyData1 = *pbyData2;
591  pbyData1++;
592  pbyData2++;
593  }
594  }
595  pRxPacket->byRxRate = s_byGetRateIdx(*pbyRxRate);
596  pRxPacket->byRxChannel = (*pbyRxSts) >> 2;
597 //PLICE_DEBUG->
598 //EnQueue(pDevice,pRxPacket);
599 
600 #ifdef THREAD
601  EnQueue(pDevice,pRxPacket);
602 
603  //printk("enque time is %x\n",jiffies);
604  //up(&pDevice->mlme_semaphore);
605  //Enque (pDevice->FirstRecvMngList,pDevice->LastRecvMngList,pMgmt);
606 #else
607 
608 #ifdef TASK_LET
609  EnQueue(pDevice,pRxPacket);
610  tasklet_schedule(&pDevice->RxMngWorkItem);
611 #else
612 //printk("RxMan\n");
613  vMgrRxManagePacket((void *)pDevice, pDevice->pMgmt, pRxPacket);
614  //tasklet_schedule(&pDevice->RxMngWorkItem);
615 #endif
616 
617 #endif
618 //PLICE_DEBUG<-
619  //vMgrRxManagePacket((void *)pDevice, pDevice->pMgmt, pRxPacket);
620  // hostap Deamon handle 802.11 management
621  if (pDevice->bEnableHostapd) {
622  skb->dev = pDevice->apdev;
623  skb->data += 4;
624  skb->tail += 4;
625  skb_put(skb, FrameSize);
626  skb_reset_mac_header(skb);
627  skb->pkt_type = PACKET_OTHERHOST;
628  skb->protocol = htons(ETH_P_802_2);
629  memset(skb->cb, 0, sizeof(skb->cb));
630  netif_rx(skb);
631  return true;
632  }
633  }
634  else {
635  // Control Frame
636  };
637  return false;
638  }
639  else {
640  if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
641  //In AP mode, hw only check addr1(BSSID or RA) if equal to local MAC.
642  if ( !(*pbyRsr & RSR_BSSIDOK)) {
643  if (bDeFragRx) {
644  if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
645  DBG_PRT(MSG_LEVEL_ERR,KERN_ERR "%s: can not alloc more frag bufs\n",
646  pDevice->dev->name);
647  }
648  }
649  return false;
650  }
651  }
652  else {
653  // discard DATA packet while not associate || BSSID error
654  if ((pDevice->bLinkPass == false) ||
655  !(*pbyRsr & RSR_BSSIDOK)) {
656  if (bDeFragRx) {
657  if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
658  DBG_PRT(MSG_LEVEL_ERR,KERN_ERR "%s: can not alloc more frag bufs\n",
659  pDevice->dev->name);
660  }
661  }
662  return false;
663  }
664  //mike add:station mode check eapol-key challenge--->
665  {
666  unsigned char Protocol_Version; //802.1x Authentication
667  unsigned char Packet_Type; //802.1x Authentication
668  if (bIsWEP)
669  cbIVOffset = 8;
670  else
671  cbIVOffset = 0;
672  wEtherType = (skb->data[cbIVOffset + 8 + 24 + 6] << 8) |
673  skb->data[cbIVOffset + 8 + 24 + 6 + 1];
674  Protocol_Version = skb->data[cbIVOffset + 8 + 24 + 6 + 1 +1];
675  Packet_Type = skb->data[cbIVOffset + 8 + 24 + 6 + 1 +1+1];
676  if (wEtherType == ETH_P_PAE) { //Protocol Type in LLC-Header
677  if(((Protocol_Version==1) ||(Protocol_Version==2)) &&
678  (Packet_Type==3)) { //802.1x OR eapol-key challenge frame receive
679  bRxeapol_key = true;
680  }
681  }
682  }
683  //mike add:station mode check eapol-key challenge<---
684  }
685  }
686 
687 
688 // Data frame Handle
689 
690 
691  if (pDevice->bEnablePSMode) {
692  if (IS_FC_MOREDATA((skb->data+4))) {
693  if (*pbyRsr & RSR_ADDROK) {
694  //PSbSendPSPOLL((PSDevice)pDevice);
695  }
696  }
697  else {
698  if (pDevice->pMgmt->bInTIMWake == true) {
699  pDevice->pMgmt->bInTIMWake = false;
700  }
701  }
702  }
703 
704  // Now it only supports 802.11g Infrastructure Mode, and support rate must up to 54 Mbps
705  if (pDevice->bDiversityEnable && (FrameSize>50) &&
706  (pDevice->eOPMode == OP_MODE_INFRASTRUCTURE) &&
707  (pDevice->bLinkPass == true)) {
708  //printk("device_receive_frame: RxRate is %d\n",*pbyRxRate);
709  BBvAntennaDiversity(pDevice, s_byGetRateIdx(*pbyRxRate), 0);
710  }
711 
712 
713  if (pDevice->byLocalID != REV_ID_VT3253_B1) {
714  pDevice->uCurrRSSI = *pbyRSSI;
715  }
716  pDevice->byCurrSQ = *pbySQ;
717 
718  if ((*pbyRSSI != 0) &&
719  (pMgmt->pCurrBSS!=NULL)) {
720  RFvRSSITodBm(pDevice, *pbyRSSI, &ldBm);
721  // Monitor if RSSI is too strong.
722  pMgmt->pCurrBSS->byRSSIStatCnt++;
723  pMgmt->pCurrBSS->byRSSIStatCnt %= RSSI_STAT_COUNT;
724  pMgmt->pCurrBSS->ldBmAverage[pMgmt->pCurrBSS->byRSSIStatCnt] = ldBm;
725  for(ii=0;ii<RSSI_STAT_COUNT;ii++) {
726  if (pMgmt->pCurrBSS->ldBmAverage[ii] != 0) {
727  pMgmt->pCurrBSS->ldBmMAX = max(pMgmt->pCurrBSS->ldBmAverage[ii], ldBm);
728  }
729  }
730  }
731 
732  // -----------------------------------------------
733 
734  if ((pMgmt->eCurrMode == WMAC_MODE_ESS_AP) && (pDevice->bEnable8021x == true)){
735  unsigned char abyMacHdr[24];
736 
737  // Only 802.1x packet incoming allowed
738  if (bIsWEP)
739  cbIVOffset = 8;
740  else
741  cbIVOffset = 0;
742  wEtherType = (skb->data[cbIVOffset + 4 + 24 + 6] << 8) |
743  skb->data[cbIVOffset + 4 + 24 + 6 + 1];
744 
745  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"wEtherType = %04x \n", wEtherType);
746  if (wEtherType == ETH_P_PAE) {
747  skb->dev = pDevice->apdev;
748 
749  if (bIsWEP == true) {
750  // strip IV header(8)
751  memcpy(&abyMacHdr[0], (skb->data + 4), 24);
752  memcpy((skb->data + 4 + cbIVOffset), &abyMacHdr[0], 24);
753  }
754  skb->data += (cbIVOffset + 4);
755  skb->tail += (cbIVOffset + 4);
756  skb_put(skb, FrameSize);
757  skb_reset_mac_header(skb);
758 
759  skb->pkt_type = PACKET_OTHERHOST;
760  skb->protocol = htons(ETH_P_802_2);
761  memset(skb->cb, 0, sizeof(skb->cb));
762  netif_rx(skb);
763  return true;
764 
765 }
766  // check if 802.1x authorized
767  if (!(pMgmt->sNodeDBTable[iSANodeIndex].dwFlags & WLAN_STA_AUTHORIZED))
768  return false;
769  }
770 
771 
772  if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) {
773  if (bIsWEP) {
774  FrameSize -= 8; //MIC
775  }
776  }
777 
778  //--------------------------------------------------------------------------------
779  // Soft MIC
780  if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) {
781  if (bIsWEP) {
782  unsigned long *pdwMIC_L;
783  unsigned long *pdwMIC_R;
784  unsigned long dwMIC_Priority;
785  unsigned long dwMICKey0 = 0, dwMICKey1 = 0;
786  unsigned long dwLocalMIC_L = 0;
787  unsigned long dwLocalMIC_R = 0;
788  viawget_wpa_header *wpahdr;
789 
790 
791  if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
792  dwMICKey0 = cpu_to_le32(*(unsigned long *)(&pKey->abyKey[24]));
793  dwMICKey1 = cpu_to_le32(*(unsigned long *)(&pKey->abyKey[28]));
794  }
795  else {
796  if (pDevice->pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) {
797  dwMICKey0 = cpu_to_le32(*(unsigned long *)(&pKey->abyKey[16]));
798  dwMICKey1 = cpu_to_le32(*(unsigned long *)(&pKey->abyKey[20]));
799  } else if ((pKey->dwKeyIndex & BIT28) == 0) {
800  dwMICKey0 = cpu_to_le32(*(unsigned long *)(&pKey->abyKey[16]));
801  dwMICKey1 = cpu_to_le32(*(unsigned long *)(&pKey->abyKey[20]));
802  } else {
803  dwMICKey0 = cpu_to_le32(*(unsigned long *)(&pKey->abyKey[24]));
804  dwMICKey1 = cpu_to_le32(*(unsigned long *)(&pKey->abyKey[28]));
805  }
806  }
807 
808  MIC_vInit(dwMICKey0, dwMICKey1);
809  MIC_vAppend((unsigned char *)&(pDevice->sRxEthHeader.abyDstAddr[0]), 12);
810  dwMIC_Priority = 0;
811  MIC_vAppend((unsigned char *)&dwMIC_Priority, 4);
812  // 4 is Rcv buffer header, 24 is MAC Header, and 8 is IV and Ext IV.
813  MIC_vAppend((unsigned char *)(skb->data + 4 + WLAN_HDR_ADDR3_LEN + 8),
814  FrameSize - WLAN_HDR_ADDR3_LEN - 8);
815  MIC_vGetMIC(&dwLocalMIC_L, &dwLocalMIC_R);
816  MIC_vUnInit();
817 
818  pdwMIC_L = (unsigned long *)(skb->data + 4 + FrameSize);
819  pdwMIC_R = (unsigned long *)(skb->data + 4 + FrameSize + 4);
820  //DBG_PRN_GRP12(("RxL: %lx, RxR: %lx\n", *pdwMIC_L, *pdwMIC_R));
821  //DBG_PRN_GRP12(("LocalL: %lx, LocalR: %lx\n", dwLocalMIC_L, dwLocalMIC_R));
822  //DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"dwMICKey0= %lx,dwMICKey1= %lx \n", dwMICKey0, dwMICKey1);
823 
824 
825  if ((cpu_to_le32(*pdwMIC_L) != dwLocalMIC_L) || (cpu_to_le32(*pdwMIC_R) != dwLocalMIC_R) ||
826  (pDevice->bRxMICFail == true)) {
827  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"MIC comparison is fail!\n");
828  pDevice->bRxMICFail = false;
829  //pDevice->s802_11Counter.TKIPLocalMICFailures.QuadPart++;
830  pDevice->s802_11Counter.TKIPLocalMICFailures++;
831  if (bDeFragRx) {
832  if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
833  DBG_PRT(MSG_LEVEL_ERR,KERN_ERR "%s: can not alloc more frag bufs\n",
834  pDevice->dev->name);
835  }
836  }
837  //2008-0409-07, <Add> by Einsn Liu
838  #ifdef WPA_SUPPLICANT_DRIVER_WEXT_SUPPORT
839  //send event to wpa_supplicant
840  //if(pDevice->bWPADevEnable == true)
841  {
842  union iwreq_data wrqu;
843  struct iw_michaelmicfailure ev;
844  int keyidx = pbyFrame[cbHeaderSize+3] >> 6; //top two-bits
845  memset(&ev, 0, sizeof(ev));
846  ev.flags = keyidx & IW_MICFAILURE_KEY_ID;
847  if ((pMgmt->eCurrMode == WMAC_MODE_ESS_STA) &&
848  (pMgmt->eCurrState == WMAC_STATE_ASSOC) &&
849  (*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) {
850  ev.flags |= IW_MICFAILURE_PAIRWISE;
851  } else {
852  ev.flags |= IW_MICFAILURE_GROUP;
853  }
854 
855  ev.src_addr.sa_family = ARPHRD_ETHER;
856  memcpy(ev.src_addr.sa_data, pMACHeader->abyAddr2, ETH_ALEN);
857  memset(&wrqu, 0, sizeof(wrqu));
858  wrqu.data.length = sizeof(ev);
859  wireless_send_event(pDevice->dev, IWEVMICHAELMICFAILURE, &wrqu, (char *)&ev);
860 
861  }
862  #endif
863 
864 
865  if ((pDevice->bWPADEVUp) && (pDevice->skb != NULL)) {
866  wpahdr = (viawget_wpa_header *)pDevice->skb->data;
867  if ((pDevice->pMgmt->eCurrMode == WMAC_MODE_ESS_STA) &&
868  (pDevice->pMgmt->eCurrState == WMAC_STATE_ASSOC) &&
869  (*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) {
870  //s802_11_Status.Flags = NDIS_802_11_AUTH_REQUEST_PAIRWISE_ERROR;
871  wpahdr->type = VIAWGET_PTK_MIC_MSG;
872  } else {
873  //s802_11_Status.Flags = NDIS_802_11_AUTH_REQUEST_GROUP_ERROR;
874  wpahdr->type = VIAWGET_GTK_MIC_MSG;
875  }
876  wpahdr->resp_ie_len = 0;
877  wpahdr->req_ie_len = 0;
878  skb_put(pDevice->skb, sizeof(viawget_wpa_header));
879  pDevice->skb->dev = pDevice->wpadev;
880  skb_reset_mac_header(pDevice->skb);
881  pDevice->skb->pkt_type = PACKET_HOST;
882  pDevice->skb->protocol = htons(ETH_P_802_2);
883  memset(pDevice->skb->cb, 0, sizeof(pDevice->skb->cb));
884  netif_rx(pDevice->skb);
885  pDevice->skb = dev_alloc_skb((int)pDevice->rx_buf_sz);
886  }
887 
888  return false;
889 
890  }
891  }
892  } //---end of SOFT MIC-----------------------------------------------------------------------
893 
894  // ++++++++++ Reply Counter Check +++++++++++++
895 
896  if ((pKey != NULL) && ((pKey->byCipherSuite == KEY_CTL_TKIP) ||
897  (pKey->byCipherSuite == KEY_CTL_CCMP))) {
898  if (bIsWEP) {
899  unsigned short wLocalTSC15_0 = 0;
900  unsigned long dwLocalTSC47_16 = 0;
901  unsigned long long RSC = 0;
902  // endian issues
903  RSC = *((unsigned long long *) &(pKey->KeyRSC));
904  wLocalTSC15_0 = (unsigned short) RSC;
905  dwLocalTSC47_16 = (unsigned long) (RSC>>16);
906 
907  RSC = dwRxTSC47_16;
908  RSC <<= 16;
909  RSC += wRxTSC15_0;
910  memcpy(&(pKey->KeyRSC), &RSC, sizeof(QWORD));
911 
912  if ( (pDevice->sMgmtObj.eCurrMode == WMAC_MODE_ESS_STA) &&
913  (pDevice->sMgmtObj.eCurrState == WMAC_STATE_ASSOC)) {
914  // check RSC
915  if ( (wRxTSC15_0 < wLocalTSC15_0) &&
916  (dwRxTSC47_16 <= dwLocalTSC47_16) &&
917  !((dwRxTSC47_16 == 0) && (dwLocalTSC47_16 == 0xFFFFFFFF))) {
918  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"TSC is illegal~~!\n ");
919  if (pKey->byCipherSuite == KEY_CTL_TKIP)
920  //pDevice->s802_11Counter.TKIPReplays.QuadPart++;
921  pDevice->s802_11Counter.TKIPReplays++;
922  else
923  //pDevice->s802_11Counter.CCMPReplays.QuadPart++;
924  pDevice->s802_11Counter.CCMPReplays++;
925 
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  } // ----- End of Reply Counter Check --------------------------
937 
938 
939 
940  if ((pKey != NULL) && (bIsWEP)) {
941 // pDevice->s802_11Counter.DecryptSuccessCount.QuadPart++;
942  }
943 
944 
945  s_vProcessRxMACHeader(pDevice, (unsigned char *)(skb->data+4), FrameSize, bIsWEP, bExtIV, &cbHeaderOffset);
946  FrameSize -= cbHeaderOffset;
947  cbHeaderOffset += 4; // 4 is Rcv buffer header
948 
949  // Null data, framesize = 14
950  if (FrameSize < 15)
951  return false;
952 
953  if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
954  if (s_bAPModeRxData(pDevice,
955  skb,
956  FrameSize,
957  cbHeaderOffset,
958  iSANodeIndex,
959  iDANodeIndex
960  ) == false) {
961 
962  if (bDeFragRx) {
963  if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
964  DBG_PRT(MSG_LEVEL_ERR,KERN_ERR "%s: can not alloc more frag bufs\n",
965  pDevice->dev->name);
966  }
967  }
968  return false;
969  }
970 
971 // if(pDevice->bRxMICFail == false) {
972 // for (ii =0; ii < 100; ii++)
973 // printk(" %02x", *(skb->data + ii));
974 // printk("\n");
975 // }
976 
977  }
978 
979  skb->data += cbHeaderOffset;
980  skb->tail += cbHeaderOffset;
981  skb_put(skb, FrameSize);
982  skb->protocol=eth_type_trans(skb, skb->dev);
983 
984 
985  //drop frame not met IEEE 802.3
986 /*
987  if (pDevice->flags & DEVICE_FLAGS_VAL_PKT_LEN) {
988  if ((skb->protocol==htons(ETH_P_802_3)) &&
989  (skb->len!=htons(skb->mac.ethernet->h_proto))) {
990  pStats->rx_length_errors++;
991  pStats->rx_dropped++;
992  if (bDeFragRx) {
993  if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
994  DBG_PRT(MSG_LEVEL_ERR,KERN_ERR "%s: can not alloc more frag bufs\n",
995  pDevice->dev->name);
996  }
997  }
998  return false;
999  }
1000  }
1001 */
1002 
1003  skb->ip_summed=CHECKSUM_NONE;
1004  pStats->rx_bytes +=skb->len;
1005  pStats->rx_packets++;
1006  netif_rx(skb);
1007 
1008  if (bDeFragRx) {
1009  if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
1010  DBG_PRT(MSG_LEVEL_ERR,KERN_ERR "%s: can not alloc more frag bufs\n",
1011  pDevice->dev->name);
1012  }
1013  return false;
1014  }
1015 
1016  return true;
1017 }
1018 
1019 
1020 static bool s_bAPModeRxCtl (
1021  PSDevice pDevice,
1022  unsigned char *pbyFrame,
1023  int iSANodeIndex
1024  )
1025 {
1026  PS802_11Header p802_11Header;
1027  CMD_STATUS Status;
1028  PSMgmtObject pMgmt = pDevice->pMgmt;
1029 
1030 
1031  if (IS_CTL_PSPOLL(pbyFrame) || !IS_TYPE_CONTROL(pbyFrame)) {
1032 
1033  p802_11Header = (PS802_11Header) (pbyFrame);
1034  if (!IS_TYPE_MGMT(pbyFrame)) {
1035 
1036  // Data & PS-Poll packet
1037  // check frame class
1038  if (iSANodeIndex > 0) {
1039  // frame class 3 fliter & checking
1040  if (pMgmt->sNodeDBTable[iSANodeIndex].eNodeState < NODE_AUTH) {
1041  // send deauth notification
1042  // reason = (6) class 2 received from nonauth sta
1043  vMgrDeAuthenBeginSta(pDevice,
1044  pMgmt,
1045  (unsigned char *)(p802_11Header->abyAddr2),
1046  (WLAN_MGMT_REASON_CLASS2_NONAUTH),
1047  &Status
1048  );
1049  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: send vMgrDeAuthenBeginSta 1\n");
1050  return true;
1051  }
1052  if (pMgmt->sNodeDBTable[iSANodeIndex].eNodeState < NODE_ASSOC) {
1053  // send deassoc notification
1054  // reason = (7) class 3 received from nonassoc sta
1055  vMgrDisassocBeginSta(pDevice,
1056  pMgmt,
1057  (unsigned char *)(p802_11Header->abyAddr2),
1058  (WLAN_MGMT_REASON_CLASS3_NONASSOC),
1059  &Status
1060  );
1061  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: send vMgrDisassocBeginSta 2\n");
1062  return true;
1063  }
1064 
1065  if (pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable) {
1066  // delcare received ps-poll event
1067  if (IS_CTL_PSPOLL(pbyFrame)) {
1068  pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
1069  bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL);
1070  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: WLAN_CMD_RX_PSPOLL 1\n");
1071  }
1072  else {
1073  // check Data PS state
1074  // if PW bit off, send out all PS bufferring packets.
1075  if (!IS_FC_POWERMGT(pbyFrame)) {
1076  pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = false;
1077  pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
1078  bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL);
1079  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: WLAN_CMD_RX_PSPOLL 2\n");
1080  }
1081  }
1082  }
1083  else {
1084  if (IS_FC_POWERMGT(pbyFrame)) {
1085  pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = true;
1086  // Once if STA in PS state, enable multicast bufferring
1087  pMgmt->sNodeDBTable[0].bPSEnable = true;
1088  }
1089  else {
1090  // clear all pending PS frame.
1091  if (pMgmt->sNodeDBTable[iSANodeIndex].wEnQueueCnt > 0) {
1092  pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = false;
1093  pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
1094  bScheduleCommand((void *)pDevice, WLAN_CMD_RX_PSPOLL, NULL);
1095  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: WLAN_CMD_RX_PSPOLL 3\n");
1096 
1097  }
1098  }
1099  }
1100  }
1101  else {
1102  vMgrDeAuthenBeginSta(pDevice,
1103  pMgmt,
1104  (unsigned char *)(p802_11Header->abyAddr2),
1105  (WLAN_MGMT_REASON_CLASS2_NONAUTH),
1106  &Status
1107  );
1108  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: send vMgrDeAuthenBeginSta 3\n");
1109  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "BSSID:%pM\n",
1110  p802_11Header->abyAddr3);
1111  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ADDR2:%pM\n",
1112  p802_11Header->abyAddr2);
1113  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ADDR1:%pM\n",
1114  p802_11Header->abyAddr1);
1115  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: wFrameCtl= %x\n", p802_11Header->wFrameCtl );
1116  VNSvInPortB(pDevice->PortOffset + MAC_REG_RCR, &(pDevice->byRxMode));
1117  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc:pDevice->byRxMode = %x\n", pDevice->byRxMode );
1118  return true;
1119  }
1120  }
1121  }
1122  return false;
1123 
1124 }
1125 
1126 static bool s_bHandleRxEncryption (
1127  PSDevice pDevice,
1128  unsigned char *pbyFrame,
1129  unsigned int FrameSize,
1130  unsigned char *pbyRsr,
1131  unsigned char *pbyNewRsr,
1132  PSKeyItem *pKeyOut,
1133  bool *pbExtIV,
1134  unsigned short *pwRxTSC15_0,
1135  unsigned long *pdwRxTSC47_16
1136  )
1137 {
1138  unsigned int PayloadLen = FrameSize;
1139  unsigned char *pbyIV;
1140  unsigned char byKeyIdx;
1141  PSKeyItem pKey = NULL;
1142  unsigned char byDecMode = KEY_CTL_WEP;
1143  PSMgmtObject pMgmt = pDevice->pMgmt;
1144 
1145 
1146  *pwRxTSC15_0 = 0;
1147  *pdwRxTSC47_16 = 0;
1148 
1149  pbyIV = pbyFrame + WLAN_HDR_ADDR3_LEN;
1150  if ( WLAN_GET_FC_TODS(*(unsigned short *)pbyFrame) &&
1151  WLAN_GET_FC_FROMDS(*(unsigned short *)pbyFrame) ) {
1152  pbyIV += 6; // 6 is 802.11 address4
1153  PayloadLen -= 6;
1154  }
1155  byKeyIdx = (*(pbyIV+3) & 0xc0);
1156  byKeyIdx >>= 6;
1157  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"\nKeyIdx: %d\n", byKeyIdx);
1158 
1159  if ((pMgmt->eAuthenMode == WMAC_AUTH_WPA) ||
1160  (pMgmt->eAuthenMode == WMAC_AUTH_WPAPSK) ||
1161  (pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) ||
1162  (pMgmt->eAuthenMode == WMAC_AUTH_WPA2) ||
1163  (pMgmt->eAuthenMode == WMAC_AUTH_WPA2PSK)) {
1164  if (((*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) &&
1165  (pDevice->pMgmt->byCSSPK != KEY_CTL_NONE)) {
1166  // unicast pkt use pairwise key
1167  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"unicast pkt\n");
1168  if (KeybGetKey(&(pDevice->sKey), pDevice->abyBSSID, 0xFFFFFFFF, &pKey) == true) {
1169  if (pDevice->pMgmt->byCSSPK == KEY_CTL_TKIP)
1170  byDecMode = KEY_CTL_TKIP;
1171  else if (pDevice->pMgmt->byCSSPK == KEY_CTL_CCMP)
1172  byDecMode = KEY_CTL_CCMP;
1173  }
1174  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"unicast pkt: %d, %p\n", byDecMode, pKey);
1175  } else {
1176  // use group key
1177  KeybGetKey(&(pDevice->sKey), pDevice->abyBSSID, byKeyIdx, &pKey);
1178  if (pDevice->pMgmt->byCSSGK == KEY_CTL_TKIP)
1179  byDecMode = KEY_CTL_TKIP;
1180  else if (pDevice->pMgmt->byCSSGK == KEY_CTL_CCMP)
1181  byDecMode = KEY_CTL_CCMP;
1182  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"group pkt: %d, %d, %p\n", byKeyIdx, byDecMode, pKey);
1183  }
1184  }
1185  // our WEP only support Default Key
1186  if (pKey == NULL) {
1187  // use default group key
1188  KeybGetKey(&(pDevice->sKey), pDevice->abyBroadcastAddr, byKeyIdx, &pKey);
1189  if (pDevice->pMgmt->byCSSGK == KEY_CTL_TKIP)
1190  byDecMode = KEY_CTL_TKIP;
1191  else if (pDevice->pMgmt->byCSSGK == KEY_CTL_CCMP)
1192  byDecMode = KEY_CTL_CCMP;
1193  }
1194  *pKeyOut = pKey;
1195 
1196  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"AES:%d %d %d\n", pDevice->pMgmt->byCSSPK, pDevice->pMgmt->byCSSGK, byDecMode);
1197 
1198  if (pKey == NULL) {
1199  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"pKey == NULL\n");
1200  if (byDecMode == KEY_CTL_WEP) {
1201 // pDevice->s802_11Counter.WEPUndecryptableCount.QuadPart++;
1202  } else if (pDevice->bLinkPass == true) {
1203 // pDevice->s802_11Counter.DecryptFailureCount.QuadPart++;
1204  }
1205  return false;
1206  }
1207  if (byDecMode != pKey->byCipherSuite) {
1208  if (byDecMode == KEY_CTL_WEP) {
1209 // pDevice->s802_11Counter.WEPUndecryptableCount.QuadPart++;
1210  } else if (pDevice->bLinkPass == true) {
1211 // pDevice->s802_11Counter.DecryptFailureCount.QuadPart++;
1212  }
1213  *pKeyOut = NULL;
1214  return false;
1215  }
1216  if (byDecMode == KEY_CTL_WEP) {
1217  // handle WEP
1218  if ((pDevice->byLocalID <= REV_ID_VT3253_A1) ||
1219  (((PSKeyTable)(pKey->pvKeyTable))->bSoftWEP == true)) {
1220  // Software WEP
1221  // 1. 3253A
1222  // 2. WEP 256
1223 
1224  PayloadLen -= (WLAN_HDR_ADDR3_LEN + 4 + 4); // 24 is 802.11 header,4 is IV, 4 is crc
1225  memcpy(pDevice->abyPRNG, pbyIV, 3);
1226  memcpy(pDevice->abyPRNG + 3, pKey->abyKey, pKey->uKeyLength);
1227  rc4_init(&pDevice->SBox, pDevice->abyPRNG, pKey->uKeyLength + 3);
1228  rc4_encrypt(&pDevice->SBox, pbyIV+4, pbyIV+4, PayloadLen);
1229 
1230  if (ETHbIsBufferCrc32Ok(pbyIV+4, PayloadLen)) {
1231  *pbyNewRsr |= NEWRSR_DECRYPTOK;
1232  }
1233  }
1234  } else if ((byDecMode == KEY_CTL_TKIP) ||
1235  (byDecMode == KEY_CTL_CCMP)) {
1236  // TKIP/AES
1237 
1238  PayloadLen -= (WLAN_HDR_ADDR3_LEN + 8 + 4); // 24 is 802.11 header, 8 is IV&ExtIV, 4 is crc
1239  *pdwRxTSC47_16 = cpu_to_le32(*(unsigned long *)(pbyIV + 4));
1240  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ExtIV: %lx\n",*pdwRxTSC47_16);
1241  if (byDecMode == KEY_CTL_TKIP) {
1242  *pwRxTSC15_0 = cpu_to_le16(MAKEWORD(*(pbyIV+2), *pbyIV));
1243  } else {
1244  *pwRxTSC15_0 = cpu_to_le16(*(unsigned short *)pbyIV);
1245  }
1246  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"TSC0_15: %x\n", *pwRxTSC15_0);
1247 
1248  if ((byDecMode == KEY_CTL_TKIP) &&
1249  (pDevice->byLocalID <= REV_ID_VT3253_A1)) {
1250  // Software TKIP
1251  // 1. 3253 A
1252  PS802_11Header pMACHeader = (PS802_11Header) (pbyFrame);
1253  TKIPvMixKey(pKey->abyKey, pMACHeader->abyAddr2, *pwRxTSC15_0, *pdwRxTSC47_16, pDevice->abyPRNG);
1254  rc4_init(&pDevice->SBox, pDevice->abyPRNG, TKIP_KEY_LEN);
1255  rc4_encrypt(&pDevice->SBox, pbyIV+8, pbyIV+8, PayloadLen);
1256  if (ETHbIsBufferCrc32Ok(pbyIV+8, PayloadLen)) {
1257  *pbyNewRsr |= NEWRSR_DECRYPTOK;
1258  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ICV OK!\n");
1259  } else {
1260  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ICV FAIL!!!\n");
1261  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"PayloadLen = %d\n", PayloadLen);
1262  }
1263  }
1264  }// end of TKIP/AES
1265 
1266  if ((*(pbyIV+3) & 0x20) != 0)
1267  *pbExtIV = true;
1268  return true;
1269 }
1270 
1271 
1272 static bool s_bHostWepRxEncryption (
1273  PSDevice pDevice,
1274  unsigned char *pbyFrame,
1275  unsigned int FrameSize,
1276  unsigned char *pbyRsr,
1277  bool bOnFly,
1278  PSKeyItem pKey,
1279  unsigned char *pbyNewRsr,
1280  bool *pbExtIV,
1281  unsigned short *pwRxTSC15_0,
1282  unsigned long *pdwRxTSC47_16
1283  )
1284 {
1285  unsigned int PayloadLen = FrameSize;
1286  unsigned char *pbyIV;
1287  unsigned char byKeyIdx;
1288  unsigned char byDecMode = KEY_CTL_WEP;
1289  PS802_11Header pMACHeader;
1290 
1291 
1292 
1293  *pwRxTSC15_0 = 0;
1294  *pdwRxTSC47_16 = 0;
1295 
1296  pbyIV = pbyFrame + WLAN_HDR_ADDR3_LEN;
1297  if ( WLAN_GET_FC_TODS(*(unsigned short *)pbyFrame) &&
1298  WLAN_GET_FC_FROMDS(*(unsigned short *)pbyFrame) ) {
1299  pbyIV += 6; // 6 is 802.11 address4
1300  PayloadLen -= 6;
1301  }
1302  byKeyIdx = (*(pbyIV+3) & 0xc0);
1303  byKeyIdx >>= 6;
1304  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"\nKeyIdx: %d\n", byKeyIdx);
1305 
1306 
1307  if (pDevice->pMgmt->byCSSGK == KEY_CTL_TKIP)
1308  byDecMode = KEY_CTL_TKIP;
1309  else if (pDevice->pMgmt->byCSSGK == KEY_CTL_CCMP)
1310  byDecMode = KEY_CTL_CCMP;
1311 
1312  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"AES:%d %d %d\n", pDevice->pMgmt->byCSSPK, pDevice->pMgmt->byCSSGK, byDecMode);
1313 
1314  if (byDecMode != pKey->byCipherSuite) {
1315  if (byDecMode == KEY_CTL_WEP) {
1316 // pDevice->s802_11Counter.WEPUndecryptableCount.QuadPart++;
1317  } else if (pDevice->bLinkPass == true) {
1318 // pDevice->s802_11Counter.DecryptFailureCount.QuadPart++;
1319  }
1320  return false;
1321  }
1322 
1323  if (byDecMode == KEY_CTL_WEP) {
1324  // handle WEP
1325  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"byDecMode == KEY_CTL_WEP \n");
1326  if ((pDevice->byLocalID <= REV_ID_VT3253_A1) ||
1327  (((PSKeyTable)(pKey->pvKeyTable))->bSoftWEP == true) ||
1328  (bOnFly == false)) {
1329  // Software WEP
1330  // 1. 3253A
1331  // 2. WEP 256
1332  // 3. NotOnFly
1333 
1334  PayloadLen -= (WLAN_HDR_ADDR3_LEN + 4 + 4); // 24 is 802.11 header,4 is IV, 4 is crc
1335  memcpy(pDevice->abyPRNG, pbyIV, 3);
1336  memcpy(pDevice->abyPRNG + 3, pKey->abyKey, pKey->uKeyLength);
1337  rc4_init(&pDevice->SBox, pDevice->abyPRNG, pKey->uKeyLength + 3);
1338  rc4_encrypt(&pDevice->SBox, pbyIV+4, pbyIV+4, PayloadLen);
1339 
1340  if (ETHbIsBufferCrc32Ok(pbyIV+4, PayloadLen)) {
1341  *pbyNewRsr |= NEWRSR_DECRYPTOK;
1342  }
1343  }
1344  } else if ((byDecMode == KEY_CTL_TKIP) ||
1345  (byDecMode == KEY_CTL_CCMP)) {
1346  // TKIP/AES
1347 
1348  PayloadLen -= (WLAN_HDR_ADDR3_LEN + 8 + 4); // 24 is 802.11 header, 8 is IV&ExtIV, 4 is crc
1349  *pdwRxTSC47_16 = cpu_to_le32(*(unsigned long *)(pbyIV + 4));
1350  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ExtIV: %lx\n",*pdwRxTSC47_16);
1351 
1352  if (byDecMode == KEY_CTL_TKIP) {
1353  *pwRxTSC15_0 = cpu_to_le16(MAKEWORD(*(pbyIV+2), *pbyIV));
1354  } else {
1355  *pwRxTSC15_0 = cpu_to_le16(*(unsigned short *)pbyIV);
1356  }
1357  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"TSC0_15: %x\n", *pwRxTSC15_0);
1358 
1359  if (byDecMode == KEY_CTL_TKIP) {
1360 
1361  if ((pDevice->byLocalID <= REV_ID_VT3253_A1) || (bOnFly == false)) {
1362  // Software TKIP
1363  // 1. 3253 A
1364  // 2. NotOnFly
1365  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"soft KEY_CTL_TKIP \n");
1366  pMACHeader = (PS802_11Header) (pbyFrame);
1367  TKIPvMixKey(pKey->abyKey, pMACHeader->abyAddr2, *pwRxTSC15_0, *pdwRxTSC47_16, pDevice->abyPRNG);
1368  rc4_init(&pDevice->SBox, pDevice->abyPRNG, TKIP_KEY_LEN);
1369  rc4_encrypt(&pDevice->SBox, pbyIV+8, pbyIV+8, PayloadLen);
1370  if (ETHbIsBufferCrc32Ok(pbyIV+8, PayloadLen)) {
1371  *pbyNewRsr |= NEWRSR_DECRYPTOK;
1372  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ICV OK!\n");
1373  } else {
1374  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ICV FAIL!!!\n");
1375  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"PayloadLen = %d\n", PayloadLen);
1376  }
1377  }
1378  }
1379 
1380  if (byDecMode == KEY_CTL_CCMP) {
1381  if (bOnFly == false) {
1382  // Software CCMP
1383  // NotOnFly
1384  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"soft KEY_CTL_CCMP\n");
1385  if (AESbGenCCMP(pKey->abyKey, pbyFrame, FrameSize)) {
1386  *pbyNewRsr |= NEWRSR_DECRYPTOK;
1387  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"CCMP MIC compare OK!\n");
1388  } else {
1389  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"CCMP MIC fail!\n");
1390  }
1391  }
1392  }
1393 
1394  }// end of TKIP/AES
1395 
1396  if ((*(pbyIV+3) & 0x20) != 0)
1397  *pbExtIV = true;
1398  return true;
1399 }
1400 
1401 
1402 
1403 static bool s_bAPModeRxData (
1404  PSDevice pDevice,
1405  struct sk_buff* skb,
1406  unsigned int FrameSize,
1407  unsigned int cbHeaderOffset,
1408  int iSANodeIndex,
1409  int iDANodeIndex
1410  )
1411 {
1412  PSMgmtObject pMgmt = pDevice->pMgmt;
1413  bool bRelayAndForward = false;
1414  bool bRelayOnly = false;
1415  unsigned char byMask[8] = {1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80};
1416  unsigned short wAID;
1417 
1418 
1419  struct sk_buff* skbcpy = NULL;
1420 
1421  if (FrameSize > CB_MAX_BUF_SIZE)
1422  return false;
1423  // check DA
1424  if(is_multicast_ether_addr((unsigned char *)(skb->data+cbHeaderOffset))) {
1425  if (pMgmt->sNodeDBTable[0].bPSEnable) {
1426 
1427  skbcpy = dev_alloc_skb((int)pDevice->rx_buf_sz);
1428 
1429  // if any node in PS mode, buffer packet until DTIM.
1430  if (skbcpy == NULL) {
1431  DBG_PRT(MSG_LEVEL_NOTICE, KERN_INFO "relay multicast no skb available \n");
1432  }
1433  else {
1434  skbcpy->dev = pDevice->dev;
1435  skbcpy->len = FrameSize;
1436  memcpy(skbcpy->data, skb->data+cbHeaderOffset, FrameSize);
1437  skb_queue_tail(&(pMgmt->sNodeDBTable[0].sTxPSQueue), skbcpy);
1438 
1439  pMgmt->sNodeDBTable[0].wEnQueueCnt++;
1440  // set tx map
1441  pMgmt->abyPSTxMap[0] |= byMask[0];
1442  }
1443  }
1444  else {
1445  bRelayAndForward = true;
1446  }
1447  }
1448  else {
1449  // check if relay
1450  if (BSSDBbIsSTAInNodeDB(pMgmt, (unsigned char *)(skb->data+cbHeaderOffset), &iDANodeIndex)) {
1451  if (pMgmt->sNodeDBTable[iDANodeIndex].eNodeState >= NODE_ASSOC) {
1452  if (pMgmt->sNodeDBTable[iDANodeIndex].bPSEnable) {
1453  // queue this skb until next PS tx, and then release.
1454 
1455  skb->data += cbHeaderOffset;
1456  skb->tail += cbHeaderOffset;
1457  skb_put(skb, FrameSize);
1458  skb_queue_tail(&pMgmt->sNodeDBTable[iDANodeIndex].sTxPSQueue, skb);
1459  pMgmt->sNodeDBTable[iDANodeIndex].wEnQueueCnt++;
1460  wAID = pMgmt->sNodeDBTable[iDANodeIndex].wAID;
1461  pMgmt->abyPSTxMap[wAID >> 3] |= byMask[wAID & 7];
1462  DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "relay: index= %d, pMgmt->abyPSTxMap[%d]= %d\n",
1463  iDANodeIndex, (wAID >> 3), pMgmt->abyPSTxMap[wAID >> 3]);
1464  return true;
1465  }
1466  else {
1467  bRelayOnly = true;
1468  }
1469  }
1470  }
1471  }
1472 
1473  if (bRelayOnly || bRelayAndForward) {
1474  // relay this packet right now
1475  if (bRelayAndForward)
1476  iDANodeIndex = 0;
1477 
1478  if ((pDevice->uAssocCount > 1) && (iDANodeIndex >= 0)) {
1479  ROUTEbRelay(pDevice, (unsigned char *)(skb->data + cbHeaderOffset), FrameSize, (unsigned int)iDANodeIndex);
1480  }
1481 
1482  if (bRelayOnly)
1483  return false;
1484  }
1485  // none associate, don't forward
1486  if (pDevice->uAssocCount == 0)
1487  return false;
1488 
1489  return true;
1490 }
1491 
Generated on Thu Jan 10 2013 14:32:24 for Linux Kernel by   doxygen 1.8.2