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xenbus_client.c: correct exit path for xenbus_map_ring_valloc_hvm
[linux/fpc-iii.git] / drivers / staging / vt6656 / dpc.c
blob7ec166a2ac81102c98976bba27e08929bb1cbd78
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 "hostap.h"
53 #include "rf.h"
54 #include "iowpa.h"
55 #include "aes_ccmp.h"
56 #include "datarate.h"
57 #include "usbpipe.h"
58
59 //static int msglevel =MSG_LEVEL_DEBUG;
60 static int msglevel =MSG_LEVEL_INFO;
61
62 const u8 acbyRxRate[MAX_RATE] =
63 {2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108};
64
65 static u8 s_byGetRateIdx(u8 byRate);
66
67 static
68 void
69 s_vGetDASA(
70 u8 * pbyRxBufferAddr,
71 unsigned int *pcbHeaderSize,
72 struct ethhdr *psEthHeader
73 );
74
75 static void s_vProcessRxMACHeader(struct vnt_private *pDevice,
76 u8 *pbyRxBufferAddr, u32 cbPacketSize, int bIsWEP, int bExtIV,
77 u32 *pcbHeadSize);
78
79 static int s_bAPModeRxCtl(struct vnt_private *pDevice, u8 *pbyFrame,
80 s32 iSANodeIndex);
81
82 static int s_bAPModeRxData(struct vnt_private *pDevice, struct sk_buff *skb,
83 u32 FrameSize, u32 cbHeaderOffset, s32 iSANodeIndex, s32 iDANodeIndex);
84
85 static int s_bHandleRxEncryption(struct vnt_private *pDevice, u8 *pbyFrame,
86 u32 FrameSize, u8 *pbyRsr, u8 *pbyNewRsr, PSKeyItem *pKeyOut,
87 s32 *pbExtIV, u16 *pwRxTSC15_0, u32 *pdwRxTSC47_16);
88
89 static int s_bHostWepRxEncryption(struct vnt_private *pDevice, u8 *pbyFrame,
90 u32 FrameSize, u8 *pbyRsr, int bOnFly, PSKeyItem pKey, u8 *pbyNewRsr,
91 s32 *pbExtIV, u16 *pwRxTSC15_0, u32 *pdwRxTSC47_16);
92
93 /*+
94 *
95 * Description:
96 * Translate Rcv 802.11 header to 802.3 header with Rx buffer
97 *
98 * Parameters:
99 * In:
100 * pDevice
101 * dwRxBufferAddr - Address of Rcv Buffer
102 * cbPacketSize - Rcv Packet size
103 * bIsWEP - If Rcv with WEP
104 * Out:
105 * pcbHeaderSize - 802.11 header size
106 *
107 * Return Value: None
108 *
109 -*/
110
111 static void s_vProcessRxMACHeader(struct vnt_private *pDevice,
112 u8 *pbyRxBufferAddr, u32 cbPacketSize, int bIsWEP, int bExtIV,
113 u32 *pcbHeadSize)
114 {
115 u8 *pbyRxBuffer;
116 u32 cbHeaderSize = 0;
117 u16 *pwType;
118 struct ieee80211_hdr *pMACHeader;
119 int ii;
120
121 pMACHeader = (struct ieee80211_hdr *) (pbyRxBufferAddr + cbHeaderSize);
122
123 s_vGetDASA((u8 *)pMACHeader, &cbHeaderSize, &pDevice->sRxEthHeader);
124
125 if (bIsWEP) {
126 if (bExtIV) {
127 // strip IV&ExtIV , add 8 byte
128 cbHeaderSize += (WLAN_HDR_ADDR3_LEN + 8);
129 } else {
130 // strip IV , add 4 byte
131 cbHeaderSize += (WLAN_HDR_ADDR3_LEN + 4);
132 }
133 }
134 else {
135 cbHeaderSize += WLAN_HDR_ADDR3_LEN;
136 };
137
138 pbyRxBuffer = (u8 *) (pbyRxBufferAddr + cbHeaderSize);
139 if (!compare_ether_addr(pbyRxBuffer, &pDevice->abySNAP_Bridgetunnel[0])) {
140 cbHeaderSize += 6;
141 } else if (!compare_ether_addr(pbyRxBuffer, &pDevice->abySNAP_RFC1042[0])) {
142 cbHeaderSize += 6;
143 pwType = (u16 *) (pbyRxBufferAddr + cbHeaderSize);
144 if ((*pwType == cpu_to_be16(ETH_P_IPX)) ||
145 (*pwType == cpu_to_le16(0xF380))) {
146 cbHeaderSize -= 8;
147 pwType = (u16 *) (pbyRxBufferAddr + cbHeaderSize);
148 if (bIsWEP) {
149 if (bExtIV) {
150 *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 8); // 8 is IV&ExtIV
151 } else {
152 *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 4); // 4 is IV
153 }
154 }
155 else {
156 *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN);
157 }
158 }
159 }
160 else {
161 cbHeaderSize -= 2;
162 pwType = (u16 *) (pbyRxBufferAddr + cbHeaderSize);
163 if (bIsWEP) {
164 if (bExtIV) {
165 *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 8); // 8 is IV&ExtIV
166 } else {
167 *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN - 4); // 4 is IV
168 }
169 }
170 else {
171 *pwType = htons(cbPacketSize - WLAN_HDR_ADDR3_LEN);
172 }
173 }
174
175 cbHeaderSize -= (ETH_ALEN * 2);
176 pbyRxBuffer = (u8 *) (pbyRxBufferAddr + cbHeaderSize);
177 for (ii = 0; ii < ETH_ALEN; ii++)
178 *pbyRxBuffer++ = pDevice->sRxEthHeader.h_dest[ii];
179 for (ii = 0; ii < ETH_ALEN; ii++)
180 *pbyRxBuffer++ = pDevice->sRxEthHeader.h_source[ii];
181
182 *pcbHeadSize = cbHeaderSize;
183 }
184
185 static u8 s_byGetRateIdx(u8 byRate)
186 {
187 u8 byRateIdx;
188
189 for (byRateIdx = 0; byRateIdx <MAX_RATE ; byRateIdx++) {
190 if (acbyRxRate[byRateIdx%MAX_RATE] == byRate)
191 return byRateIdx;
192 }
193 return 0;
194 }
195
196 static
197 void
198 s_vGetDASA (
199 u8 * pbyRxBufferAddr,
200 unsigned int *pcbHeaderSize,
201 struct ethhdr *psEthHeader
202 )
203 {
204 unsigned int cbHeaderSize = 0;
205 struct ieee80211_hdr *pMACHeader;
206 int ii;
207
208 pMACHeader = (struct ieee80211_hdr *) (pbyRxBufferAddr + cbHeaderSize);
209
210 if ((pMACHeader->frame_control & FC_TODS) == 0) {
211 if (pMACHeader->frame_control & FC_FROMDS) {
212 for (ii = 0; ii < ETH_ALEN; ii++) {
213 psEthHeader->h_dest[ii] =
214 pMACHeader->addr1[ii];
215 psEthHeader->h_source[ii] =
216 pMACHeader->addr3[ii];
217 }
218 } else {
219 /* IBSS mode */
220 for (ii = 0; ii < ETH_ALEN; ii++) {
221 psEthHeader->h_dest[ii] =
222 pMACHeader->addr1[ii];
223 psEthHeader->h_source[ii] =
224 pMACHeader->addr2[ii];
225 }
226 }
227 } else {
228 /* Is AP mode.. */
229 if (pMACHeader->frame_control & FC_FROMDS) {
230 for (ii = 0; ii < ETH_ALEN; ii++) {
231 psEthHeader->h_dest[ii] =
232 pMACHeader->addr3[ii];
233 psEthHeader->h_source[ii] =
234 pMACHeader->addr4[ii];
235 cbHeaderSize += 6;
236 }
237 } else {
238 for (ii = 0; ii < ETH_ALEN; ii++) {
239 psEthHeader->h_dest[ii] =
240 pMACHeader->addr3[ii];
241 psEthHeader->h_source[ii] =
242 pMACHeader->addr2[ii];
243 }
244 }
245 };
246 *pcbHeaderSize = cbHeaderSize;
247 }
248
249 int RXbBulkInProcessData(struct vnt_private *pDevice, PRCB pRCB,
250 unsigned long BytesToIndicate)
251 {
252 struct net_device_stats *pStats = &pDevice->stats;
253 struct sk_buff *skb;
254 struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
255 struct vnt_rx_mgmt *pRxPacket = &pMgmt->sRxPacket;
256 struct ieee80211_hdr *p802_11Header;
257 u8 *pbyRsr, *pbyNewRsr, *pbyRSSI, *pbyFrame;
258 u64 *pqwTSFTime;
259 u32 bDeFragRx = false;
260 u32 cbHeaderOffset, cbIVOffset;
261 u32 FrameSize;
262 u16 wEtherType = 0;
263 s32 iSANodeIndex = -1, iDANodeIndex = -1;
264 int ii;
265 u8 *pbyRxSts, *pbyRxRate, *pbySQ, *pby3SQ;
266 u32 cbHeaderSize;
267 PSKeyItem pKey = NULL;
268 u16 wRxTSC15_0 = 0;
269 u32 dwRxTSC47_16 = 0;
270 SKeyItem STempKey;
271 /* signed long ldBm = 0; */
272 int bIsWEP = false; int bExtIV = false;
273 u32 dwWbkStatus;
274 PRCB pRCBIndicate = pRCB;
275 u8 *pbyDAddress;
276 u16 *pwPLCP_Length;
277 u8 abyVaildRate[MAX_RATE]
278 = {2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108};
279 u16 wPLCPwithPadding;
280 struct ieee80211_hdr *pMACHeader;
281 int bRxeapol_key = false;
282
283 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---------- RXbBulkInProcessData---\n");
284
285 skb = pRCB->skb;
286
287 /* [31:16]RcvByteCount ( not include 4-byte Status ) */
288 dwWbkStatus = *((u32 *)(skb->data));
289 FrameSize = dwWbkStatus >> 16;
290 FrameSize += 4;
291
292 if (BytesToIndicate != FrameSize) {
293 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"------- WRONG Length 1\n");
294 return false;
295 }
296
297 if ((BytesToIndicate > 2372) || (BytesToIndicate <= 40)) {
298 // Frame Size error drop this packet.
299 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "---------- WRONG Length 2\n");
300 return false;
301 }
302
303 pbyDAddress = (u8 *)(skb->data);
304 pbyRxSts = pbyDAddress+4;
305 pbyRxRate = pbyDAddress+5;
306
307 //real Frame Size = USBFrameSize -4WbkStatus - 4RxStatus - 8TSF - 4RSR - 4SQ3 - ?Padding
308 //if SQ3 the range is 24~27, if no SQ3 the range is 20~23
309 //real Frame size in PLCPLength field.
310 pwPLCP_Length = (u16 *) (pbyDAddress + 6);
311 //Fix hardware bug => PLCP_Length error
312 if ( ((BytesToIndicate - (*pwPLCP_Length)) > 27) ||
313 ((BytesToIndicate - (*pwPLCP_Length)) < 24) ||
314 (BytesToIndicate < (*pwPLCP_Length)) ) {
315
316 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Wrong PLCP Length %x\n", (int) *pwPLCP_Length);
317 ASSERT(0);
318 return false;
319 }
320 for ( ii=RATE_1M;ii<MAX_RATE;ii++) {
321 if ( *pbyRxRate == abyVaildRate[ii] ) {
322 break;
323 }
324 }
325 if ( ii==MAX_RATE ) {
326 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Wrong RxRate %x\n",(int) *pbyRxRate);
327 return false;
328 }
329
330 wPLCPwithPadding = ( (*pwPLCP_Length / 4) + ( (*pwPLCP_Length % 4) ? 1:0 ) ) *4;
331
332 pqwTSFTime = (u64 *)(pbyDAddress + 8 + wPLCPwithPadding);
333 if(pDevice->byBBType == BB_TYPE_11G) {
334 pby3SQ = pbyDAddress + 8 + wPLCPwithPadding + 12;
335 pbySQ = pby3SQ;
336 }
337 else {
338 pbySQ = pbyDAddress + 8 + wPLCPwithPadding + 8;
339 pby3SQ = pbySQ;
340 }
341 pbyNewRsr = pbyDAddress + 8 + wPLCPwithPadding + 9;
342 pbyRSSI = pbyDAddress + 8 + wPLCPwithPadding + 10;
343 pbyRsr = pbyDAddress + 8 + wPLCPwithPadding + 11;
344
345 FrameSize = *pwPLCP_Length;
346
347 pbyFrame = pbyDAddress + 8;
348 // update receive statistic counter
349
350 STAvUpdateRDStatCounter(&pDevice->scStatistic,
351 *pbyRsr,
352 *pbyNewRsr,
353 *pbyRxSts,
354 *pbyRxRate,
355 pbyFrame,
356 FrameSize
357 );
358
359 pMACHeader = (struct ieee80211_hdr *) pbyFrame;
360
361 //mike add: to judge if current AP is activated?
362 if ((pMgmt->eCurrMode == WMAC_MODE_STANDBY) ||
363 (pMgmt->eCurrMode == WMAC_MODE_ESS_STA)) {
364 if (pMgmt->sNodeDBTable[0].bActive) {
365 if (!compare_ether_addr(pMgmt->abyCurrBSSID, pMACHeader->addr2)) {
366 if (pMgmt->sNodeDBTable[0].uInActiveCount != 0)
367 pMgmt->sNodeDBTable[0].uInActiveCount = 0;
368 }
369 }
370 }
371
372 if (!is_multicast_ether_addr(pMACHeader->addr1)) {
373 if (WCTLbIsDuplicate(&(pDevice->sDupRxCache), (struct ieee80211_hdr *) pbyFrame)) {
374 pDevice->s802_11Counter.FrameDuplicateCount++;
375 return false;
376 }
377
378 if (compare_ether_addr(pDevice->abyCurrentNetAddr,
379 pMACHeader->addr1)) {
380 return false;
381 }
382 }
383
384 // Use for TKIP MIC
385 s_vGetDASA(pbyFrame, &cbHeaderSize, &pDevice->sRxEthHeader);
386
387 if (!compare_ether_addr((u8 *)&(pDevice->sRxEthHeader.h_source[0]),
388 pDevice->abyCurrentNetAddr))
389 return false;
390
391 if ((pMgmt->eCurrMode == WMAC_MODE_ESS_AP) || (pMgmt->eCurrMode == WMAC_MODE_IBSS_STA)) {
392 if (IS_CTL_PSPOLL(pbyFrame) || !IS_TYPE_CONTROL(pbyFrame)) {
393 p802_11Header = (struct ieee80211_hdr *) (pbyFrame);
394 // get SA NodeIndex
395 if (BSSbIsSTAInNodeDB(pDevice, (u8 *)(p802_11Header->addr2), &iSANodeIndex)) {
396 pMgmt->sNodeDBTable[iSANodeIndex].ulLastRxJiffer = jiffies;
397 pMgmt->sNodeDBTable[iSANodeIndex].uInActiveCount = 0;
398 }
399 }
400 }
401
402 if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
403 if (s_bAPModeRxCtl(pDevice, pbyFrame, iSANodeIndex) == true) {
404 return false;
405 }
406 }
407
408 if (IS_FC_WEP(pbyFrame)) {
409 bool bRxDecryOK = false;
410
411 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"rx WEP pkt\n");
412 bIsWEP = true;
413 if ((pDevice->bEnableHostWEP) && (iSANodeIndex >= 0)) {
414 pKey = &STempKey;
415 pKey->byCipherSuite = pMgmt->sNodeDBTable[iSANodeIndex].byCipherSuite;
416 pKey->dwKeyIndex = pMgmt->sNodeDBTable[iSANodeIndex].dwKeyIndex;
417 pKey->uKeyLength = pMgmt->sNodeDBTable[iSANodeIndex].uWepKeyLength;
418 pKey->dwTSC47_16 = pMgmt->sNodeDBTable[iSANodeIndex].dwTSC47_16;
419 pKey->wTSC15_0 = pMgmt->sNodeDBTable[iSANodeIndex].wTSC15_0;
420 memcpy(pKey->abyKey,
421 &pMgmt->sNodeDBTable[iSANodeIndex].abyWepKey[0],
422 pKey->uKeyLength
423 );
424
425 bRxDecryOK = s_bHostWepRxEncryption(pDevice,
426 pbyFrame,
427 FrameSize,
428 pbyRsr,
429 pMgmt->sNodeDBTable[iSANodeIndex].bOnFly,
430 pKey,
431 pbyNewRsr,
432 &bExtIV,
433 &wRxTSC15_0,
434 &dwRxTSC47_16);
435 } else {
436 bRxDecryOK = s_bHandleRxEncryption(pDevice,
437 pbyFrame,
438 FrameSize,
439 pbyRsr,
440 pbyNewRsr,
441 &pKey,
442 &bExtIV,
443 &wRxTSC15_0,
444 &dwRxTSC47_16);
445 }
446
447 if (bRxDecryOK) {
448 if ((*pbyNewRsr & NEWRSR_DECRYPTOK) == 0) {
449 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ICV Fail\n");
450 if ( (pMgmt->eAuthenMode == WMAC_AUTH_WPA) ||
451 (pMgmt->eAuthenMode == WMAC_AUTH_WPAPSK) ||
452 (pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) ||
453 (pMgmt->eAuthenMode == WMAC_AUTH_WPA2) ||
454 (pMgmt->eAuthenMode == WMAC_AUTH_WPA2PSK)) {
455
456 if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) {
457 pDevice->s802_11Counter.TKIPICVErrors++;
458 } else if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_CCMP)) {
459 pDevice->s802_11Counter.CCMPDecryptErrors++;
460 } else if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_WEP)) {
461 // pDevice->s802_11Counter.WEPICVErrorCount.QuadPart++;
462 }
463 }
464 return false;
465 }
466 } else {
467 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"WEP Func Fail\n");
468 return false;
469 }
470 if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_CCMP))
471 FrameSize -= 8; // Message Integrity Code
472 else
473 FrameSize -= 4; // 4 is ICV
474 }
475
476 //
477 // RX OK
478 //
479 /* remove the FCS/CRC length */
480 FrameSize -= ETH_FCS_LEN;
481
482 if ( !(*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) && // unicast address
483 (IS_FRAGMENT_PKT((pbyFrame)))
484 ) {
485 // defragment
486 bDeFragRx = WCTLbHandleFragment(pDevice, (struct ieee80211_hdr *) (pbyFrame), FrameSize, bIsWEP, bExtIV);
487 pDevice->s802_11Counter.ReceivedFragmentCount++;
488 if (bDeFragRx) {
489 // defrag complete
490 // TODO skb, pbyFrame
491 skb = pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx].skb;
492 FrameSize = pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx].cbFrameLength;
493 pbyFrame = skb->data + 8;
494 }
495 else {
496 return false;
497 }
498 }
499
500 //
501 // Management & Control frame Handle
502 //
503 if ((IS_TYPE_DATA((pbyFrame))) == false) {
504 // Handle Control & Manage Frame
505
506 if (IS_TYPE_MGMT((pbyFrame))) {
507 u8 * pbyData1;
508 u8 * pbyData2;
509
510 pRxPacket = &(pRCB->sMngPacket);
511 pRxPacket->p80211Header = (PUWLAN_80211HDR)(pbyFrame);
512 pRxPacket->cbMPDULen = FrameSize;
513 pRxPacket->uRSSI = *pbyRSSI;
514 pRxPacket->bySQ = *pbySQ;
515 pRxPacket->qwLocalTSF = cpu_to_le64(*pqwTSFTime);
516 if (bIsWEP) {
517 // strip IV
518 pbyData1 = WLAN_HDR_A3_DATA_PTR(pbyFrame);
519 pbyData2 = WLAN_HDR_A3_DATA_PTR(pbyFrame) + 4;
520 for (ii = 0; ii < (FrameSize - 4); ii++) {
521 *pbyData1 = *pbyData2;
522 pbyData1++;
523 pbyData2++;
524 }
525 }
526
527 pRxPacket->byRxRate = s_byGetRateIdx(*pbyRxRate);
528
529 if ( *pbyRxSts == 0 ) {
530 //Discard beacon packet which channel is 0
531 if ( (WLAN_GET_FC_FSTYPE((pRxPacket->p80211Header->sA3.wFrameCtl)) == WLAN_FSTYPE_BEACON) ||
532 (WLAN_GET_FC_FSTYPE((pRxPacket->p80211Header->sA3.wFrameCtl)) == WLAN_FSTYPE_PROBERESP) ) {
533 return false;
534 }
535 }
536 pRxPacket->byRxChannel = (*pbyRxSts) >> 2;
537
538 // hostap Deamon handle 802.11 management
539 if (pDevice->bEnableHostapd) {
540 skb->dev = pDevice->apdev;
541 //skb->data += 4;
542 //skb->tail += 4;
543 skb->data += 8;
544 skb->tail += 8;
545 skb_put(skb, FrameSize);
546 skb_reset_mac_header(skb);
547 skb->pkt_type = PACKET_OTHERHOST;
548 skb->protocol = htons(ETH_P_802_2);
549 memset(skb->cb, 0, sizeof(skb->cb));
550 netif_rx(skb);
551 return true;
552 }
553
554 //
555 // Insert the RCB in the Recv Mng list
556 //
557 EnqueueRCB(pDevice->FirstRecvMngList, pDevice->LastRecvMngList, pRCBIndicate);
558 pDevice->NumRecvMngList++;
559 if ( bDeFragRx == false) {
560 pRCB->Ref++;
561 }
562 if (pDevice->bIsRxMngWorkItemQueued == false) {
563 pDevice->bIsRxMngWorkItemQueued = true;
564 tasklet_schedule(&pDevice->RxMngWorkItem);
565 }
566
567 }
568 else {
569 // Control Frame
570 };
571 return false;
572 }
573 else {
574 if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
575 //In AP mode, hw only check addr1(BSSID or RA) if equal to local MAC.
576 if ( !(*pbyRsr & RSR_BSSIDOK)) {
577 if (bDeFragRx) {
578 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
579 DBG_PRT(MSG_LEVEL_ERR,KERN_ERR "%s: can not alloc more frag bufs\n",
580 pDevice->dev->name);
581 }
582 }
583 return false;
584 }
585 }
586 else {
587 // discard DATA packet while not associate || BSSID error
588 if ((pDevice->bLinkPass == false) ||
589 !(*pbyRsr & RSR_BSSIDOK)) {
590 if (bDeFragRx) {
591 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
592 DBG_PRT(MSG_LEVEL_ERR,KERN_ERR "%s: can not alloc more frag bufs\n",
593 pDevice->dev->name);
594 }
595 }
596 return false;
597 }
598 //mike add:station mode check eapol-key challenge--->
599 {
600 u8 Protocol_Version; //802.1x Authentication
601 u8 Packet_Type; //802.1x Authentication
602 u8 Descriptor_type;
603 u16 Key_info;
604 if (bIsWEP)
605 cbIVOffset = 8;
606 else
607 cbIVOffset = 0;
608 wEtherType = (skb->data[cbIVOffset + 8 + 24 + 6] << 8) |
609 skb->data[cbIVOffset + 8 + 24 + 6 + 1];
610 Protocol_Version = skb->data[cbIVOffset + 8 + 24 + 6 + 1 +1];
611 Packet_Type = skb->data[cbIVOffset + 8 + 24 + 6 + 1 +1+1];
612 if (wEtherType == ETH_P_PAE) { //Protocol Type in LLC-Header
613 if(((Protocol_Version==1) ||(Protocol_Version==2)) &&
614 (Packet_Type==3)) { //802.1x OR eapol-key challenge frame receive
615 bRxeapol_key = true;
616 Descriptor_type = skb->data[cbIVOffset + 8 + 24 + 6 + 1 +1+1+1+2];
617 Key_info = (skb->data[cbIVOffset + 8 + 24 + 6 + 1 +1+1+1+2+1]<<8) |skb->data[cbIVOffset + 8 + 24 + 6 + 1 +1+1+1+2+2] ;
618 if(Descriptor_type==2) { //RSN
619 // printk("WPA2_Rx_eapol-key_info<-----:%x\n",Key_info);
620 }
621 else if(Descriptor_type==254) {
622 // printk("WPA_Rx_eapol-key_info<-----:%x\n",Key_info);
623 }
624 }
625 }
626 }
627 //mike add:station mode check eapol-key challenge<---
628 }
629 }
630
631 // Data frame Handle
632
633 if (pDevice->bEnablePSMode) {
634 if (IS_FC_MOREDATA((pbyFrame))) {
635 if (*pbyRsr & RSR_ADDROK) {
636 //PSbSendPSPOLL((PSDevice)pDevice);
637 }
638 }
639 else {
640 if (pMgmt->bInTIMWake == true) {
641 pMgmt->bInTIMWake = false;
642 }
643 }
644 }
645
646 // Now it only supports 802.11g Infrastructure Mode, and support rate must up to 54 Mbps
647 if (pDevice->bDiversityEnable && (FrameSize>50) &&
648 (pDevice->eOPMode == OP_MODE_INFRASTRUCTURE) &&
649 (pDevice->bLinkPass == true)) {
650 BBvAntennaDiversity(pDevice, s_byGetRateIdx(*pbyRxRate), 0);
651 }
652
653 // ++++++++ For BaseBand Algorithm +++++++++++++++
654 pDevice->uCurrRSSI = *pbyRSSI;
655 pDevice->byCurrSQ = *pbySQ;
656
657 // todo
658 /*
659 if ((*pbyRSSI != 0) &&
660 (pMgmt->pCurrBSS!=NULL)) {
661 RFvRSSITodBm(pDevice, *pbyRSSI, &ldBm);
662 // Monitor if RSSI is too strong.
663 pMgmt->pCurrBSS->byRSSIStatCnt++;
664 pMgmt->pCurrBSS->byRSSIStatCnt %= RSSI_STAT_COUNT;
665 pMgmt->pCurrBSS->ldBmAverage[pMgmt->pCurrBSS->byRSSIStatCnt] = ldBm;
666 for (ii = 0; ii < RSSI_STAT_COUNT; ii++) {
667 if (pMgmt->pCurrBSS->ldBmAverage[ii] != 0) {
668 pMgmt->pCurrBSS->ldBmMAX =
669 max(pMgmt->pCurrBSS->ldBmAverage[ii], ldBm);
670 }
671 }
672 }
673 */
674
675 // -----------------------------------------------
676
677 if ((pMgmt->eCurrMode == WMAC_MODE_ESS_AP) && (pDevice->bEnable8021x == true)){
678 u8 abyMacHdr[24];
679
680 // Only 802.1x packet incoming allowed
681 if (bIsWEP)
682 cbIVOffset = 8;
683 else
684 cbIVOffset = 0;
685 wEtherType = (skb->data[cbIVOffset + 8 + 24 + 6] << 8) |
686 skb->data[cbIVOffset + 8 + 24 + 6 + 1];
687
688 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"wEtherType = %04x \n", wEtherType);
689 if (wEtherType == ETH_P_PAE) {
690 skb->dev = pDevice->apdev;
691
692 if (bIsWEP == true) {
693 // strip IV header(8)
694 memcpy(&abyMacHdr[0], (skb->data + 8), 24);
695 memcpy((skb->data + 8 + cbIVOffset), &abyMacHdr[0], 24);
696 }
697
698 skb->data += (cbIVOffset + 8);
699 skb->tail += (cbIVOffset + 8);
700 skb_put(skb, FrameSize);
701 skb_reset_mac_header(skb);
702 skb->pkt_type = PACKET_OTHERHOST;
703 skb->protocol = htons(ETH_P_802_2);
704 memset(skb->cb, 0, sizeof(skb->cb));
705 netif_rx(skb);
706 return true;
707
708 }
709 // check if 802.1x authorized
710 if (!(pMgmt->sNodeDBTable[iSANodeIndex].dwFlags & WLAN_STA_AUTHORIZED))
711 return false;
712 }
713
714 if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) {
715 if (bIsWEP) {
716 FrameSize -= 8; //MIC
717 }
718 }
719
720 //--------------------------------------------------------------------------------
721 // Soft MIC
722 if ((pKey != NULL) && (pKey->byCipherSuite == KEY_CTL_TKIP)) {
723 if (bIsWEP) {
724 u32 * pdwMIC_L;
725 u32 * pdwMIC_R;
726 u32 dwMIC_Priority;
727 u32 dwMICKey0 = 0, dwMICKey1 = 0;
728 u32 dwLocalMIC_L = 0;
729 u32 dwLocalMIC_R = 0;
730
731 if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
732 dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[24]));
733 dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[28]));
734 }
735 else {
736 if (pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) {
737 dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[16]));
738 dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[20]));
739 } else if ((pKey->dwKeyIndex & BIT28) == 0) {
740 dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[16]));
741 dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[20]));
742 } else {
743 dwMICKey0 = cpu_to_le32(*(u32 *)(&pKey->abyKey[24]));
744 dwMICKey1 = cpu_to_le32(*(u32 *)(&pKey->abyKey[28]));
745 }
746 }
747
748 MIC_vInit(dwMICKey0, dwMICKey1);
749 MIC_vAppend((u8 *)&(pDevice->sRxEthHeader.h_dest[0]), 12);
750 dwMIC_Priority = 0;
751 MIC_vAppend((u8 *)&dwMIC_Priority, 4);
752 // 4 is Rcv buffer header, 24 is MAC Header, and 8 is IV and Ext IV.
753 MIC_vAppend((u8 *)(skb->data + 8 + WLAN_HDR_ADDR3_LEN + 8),
754 FrameSize - WLAN_HDR_ADDR3_LEN - 8);
755 MIC_vGetMIC(&dwLocalMIC_L, &dwLocalMIC_R);
756 MIC_vUnInit();
757
758 pdwMIC_L = (u32 *)(skb->data + 8 + FrameSize);
759 pdwMIC_R = (u32 *)(skb->data + 8 + FrameSize + 4);
760
761 if ((cpu_to_le32(*pdwMIC_L) != dwLocalMIC_L) || (cpu_to_le32(*pdwMIC_R) != dwLocalMIC_R) ||
762 (pDevice->bRxMICFail == true)) {
763 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"MIC comparison is fail!\n");
764 pDevice->bRxMICFail = false;
765 //pDevice->s802_11Counter.TKIPLocalMICFailures.QuadPart++;
766 pDevice->s802_11Counter.TKIPLocalMICFailures++;
767 if (bDeFragRx) {
768 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
769 DBG_PRT(MSG_LEVEL_ERR,KERN_ERR "%s: can not alloc more frag bufs\n",
770 pDevice->dev->name);
771 }
772 }
773 //send event to wpa_supplicant
774 //if(pDevice->bWPASuppWextEnabled == true)
775 {
776 union iwreq_data wrqu;
777 struct iw_michaelmicfailure ev;
778 int keyidx = pbyFrame[cbHeaderSize+3] >> 6; //top two-bits
779 memset(&ev, 0, sizeof(ev));
780 ev.flags = keyidx & IW_MICFAILURE_KEY_ID;
781 if ((pMgmt->eCurrMode == WMAC_MODE_ESS_STA) &&
782 (pMgmt->eCurrState == WMAC_STATE_ASSOC) &&
783 (*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) {
784 ev.flags |= IW_MICFAILURE_PAIRWISE;
785 } else {
786 ev.flags |= IW_MICFAILURE_GROUP;
787 }
788
789 ev.src_addr.sa_family = ARPHRD_ETHER;
790 memcpy(ev.src_addr.sa_data, pMACHeader->addr2, ETH_ALEN);
791 memset(&wrqu, 0, sizeof(wrqu));
792 wrqu.data.length = sizeof(ev);
793 PRINT_K("wireless_send_event--->IWEVMICHAELMICFAILURE\n");
794 wireless_send_event(pDevice->dev, IWEVMICHAELMICFAILURE, &wrqu, (char *)&ev);
795
796 }
797
798 return false;
799
800 }
801 }
802 } //---end of SOFT MIC-----------------------------------------------------------------------
803
804 // ++++++++++ Reply Counter Check +++++++++++++
805
806 if ((pKey != NULL) && ((pKey->byCipherSuite == KEY_CTL_TKIP) ||
807 (pKey->byCipherSuite == KEY_CTL_CCMP))) {
808 if (bIsWEP) {
809 u16 wLocalTSC15_0 = 0;
810 u32 dwLocalTSC47_16 = 0;
811 unsigned long long RSC = 0;
812 // endian issues
813 RSC = *((unsigned long long *) &(pKey->KeyRSC));
814 wLocalTSC15_0 = (u16) RSC;
815 dwLocalTSC47_16 = (u32) (RSC>>16);
816
817 RSC = dwRxTSC47_16;
818 RSC <<= 16;
819 RSC += wRxTSC15_0;
820 memcpy(&(pKey->KeyRSC), &RSC, sizeof(u64));
821
822 if (pDevice->vnt_mgmt.eCurrMode == WMAC_MODE_ESS_STA &&
823 pDevice->vnt_mgmt.eCurrState == WMAC_STATE_ASSOC) {
824 /* check RSC */
825 if ( (wRxTSC15_0 < wLocalTSC15_0) &&
826 (dwRxTSC47_16 <= dwLocalTSC47_16) &&
827 !((dwRxTSC47_16 == 0) && (dwLocalTSC47_16 == 0xFFFFFFFF))) {
828 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"TSC is illegal~~!\n ");
829 if (pKey->byCipherSuite == KEY_CTL_TKIP)
830 //pDevice->s802_11Counter.TKIPReplays.QuadPart++;
831 pDevice->s802_11Counter.TKIPReplays++;
832 else
833 //pDevice->s802_11Counter.CCMPReplays.QuadPart++;
834 pDevice->s802_11Counter.CCMPReplays++;
835
836 if (bDeFragRx) {
837 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
838 DBG_PRT(MSG_LEVEL_ERR,KERN_ERR "%s: can not alloc more frag bufs\n",
839 pDevice->dev->name);
840 }
841 }
842 return false;
843 }
844 }
845 }
846 } // ----- End of Reply Counter Check --------------------------
847
848 s_vProcessRxMACHeader(pDevice, (u8 *)(skb->data+8), FrameSize, bIsWEP, bExtIV, &cbHeaderOffset);
849 FrameSize -= cbHeaderOffset;
850 cbHeaderOffset += 8; // 8 is Rcv buffer header
851
852 // Null data, framesize = 12
853 if (FrameSize < 12)
854 return false;
855
856 if (pMgmt->eCurrMode == WMAC_MODE_ESS_AP) {
857 if (s_bAPModeRxData(pDevice,
858 skb,
859 FrameSize,
860 cbHeaderOffset,
861 iSANodeIndex,
862 iDANodeIndex
863 ) == false) {
864
865 if (bDeFragRx) {
866 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
867 DBG_PRT(MSG_LEVEL_ERR,KERN_ERR "%s: can not alloc more frag bufs\n",
868 pDevice->dev->name);
869 }
870 }
871 return false;
872 }
873
874 }
875
876 skb->data += cbHeaderOffset;
877 skb->tail += cbHeaderOffset;
878 skb_put(skb, FrameSize);
879 skb->protocol=eth_type_trans(skb, skb->dev);
880 skb->ip_summed=CHECKSUM_NONE;
881 pStats->rx_bytes +=skb->len;
882 pStats->rx_packets++;
883 netif_rx(skb);
884 if (bDeFragRx) {
885 if (!device_alloc_frag_buf(pDevice, &pDevice->sRxDFCB[pDevice->uCurrentDFCBIdx])) {
886 DBG_PRT(MSG_LEVEL_ERR,KERN_ERR "%s: can not alloc more frag bufs\n",
887 pDevice->dev->name);
888 }
889 return false;
890 }
891
892 return true;
893 }
894
895 static int s_bAPModeRxCtl(struct vnt_private *pDevice, u8 *pbyFrame,
896 s32 iSANodeIndex)
897 {
898 struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
899 struct ieee80211_hdr *p802_11Header;
900 CMD_STATUS Status;
901
902 if (IS_CTL_PSPOLL(pbyFrame) || !IS_TYPE_CONTROL(pbyFrame)) {
903
904 p802_11Header = (struct ieee80211_hdr *) (pbyFrame);
905 if (!IS_TYPE_MGMT(pbyFrame)) {
906
907 // Data & PS-Poll packet
908 // check frame class
909 if (iSANodeIndex > 0) {
910 // frame class 3 fliter & checking
911 if (pMgmt->sNodeDBTable[iSANodeIndex].eNodeState < NODE_AUTH) {
912 // send deauth notification
913 // reason = (6) class 2 received from nonauth sta
914 vMgrDeAuthenBeginSta(pDevice,
915 pMgmt,
916 (u8 *)(p802_11Header->addr2),
917 (WLAN_MGMT_REASON_CLASS2_NONAUTH),
918 &Status
919 );
920 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: send vMgrDeAuthenBeginSta 1\n");
921 return true;
922 }
923 if (pMgmt->sNodeDBTable[iSANodeIndex].eNodeState < NODE_ASSOC) {
924 // send deassoc notification
925 // reason = (7) class 3 received from nonassoc sta
926 vMgrDisassocBeginSta(pDevice,
927 pMgmt,
928 (u8 *)(p802_11Header->addr2),
929 (WLAN_MGMT_REASON_CLASS3_NONASSOC),
930 &Status
931 );
932 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: send vMgrDisassocBeginSta 2\n");
933 return true;
934 }
935
936 if (pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable) {
937 // delcare received ps-poll event
938 if (IS_CTL_PSPOLL(pbyFrame)) {
939 pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
940 bScheduleCommand((void *) pDevice,
941 WLAN_CMD_RX_PSPOLL,
942 NULL);
943 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: WLAN_CMD_RX_PSPOLL 1\n");
944 }
945 else {
946 // check Data PS state
947 // if PW bit off, send out all PS bufferring packets.
948 if (!IS_FC_POWERMGT(pbyFrame)) {
949 pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = false;
950 pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
951 bScheduleCommand((void *) pDevice,
952 WLAN_CMD_RX_PSPOLL,
953 NULL);
954 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: WLAN_CMD_RX_PSPOLL 2\n");
955 }
956 }
957 }
958 else {
959 if (IS_FC_POWERMGT(pbyFrame)) {
960 pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = true;
961 // Once if STA in PS state, enable multicast bufferring
962 pMgmt->sNodeDBTable[0].bPSEnable = true;
963 }
964 else {
965 // clear all pending PS frame.
966 if (pMgmt->sNodeDBTable[iSANodeIndex].wEnQueueCnt > 0) {
967 pMgmt->sNodeDBTable[iSANodeIndex].bPSEnable = false;
968 pMgmt->sNodeDBTable[iSANodeIndex].bRxPSPoll = true;
969 bScheduleCommand((void *) pDevice,
970 WLAN_CMD_RX_PSPOLL,
971 NULL);
972 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: WLAN_CMD_RX_PSPOLL 3\n");
973
974 }
975 }
976 }
977 }
978 else {
979 vMgrDeAuthenBeginSta(pDevice,
980 pMgmt,
981 (u8 *)(p802_11Header->addr2),
982 (WLAN_MGMT_REASON_CLASS2_NONAUTH),
983 &Status
984 );
985 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: send vMgrDeAuthenBeginSta 3\n");
986 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "BSSID:%pM\n",
987 p802_11Header->addr3);
988 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ADDR2:%pM\n",
989 p802_11Header->addr2);
990 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "ADDR1:%pM\n",
991 p802_11Header->addr1);
992 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "dpc: frame_control= %x\n", p802_11Header->frame_control);
993 return true;
994 }
995 }
996 }
997 return false;
998
999 }
1000
1001 static int s_bHandleRxEncryption(struct vnt_private *pDevice, u8 *pbyFrame,
1002 u32 FrameSize, u8 *pbyRsr, u8 *pbyNewRsr, PSKeyItem *pKeyOut,
1003 s32 *pbExtIV, u16 *pwRxTSC15_0, u32 *pdwRxTSC47_16)
1004 {
1005 struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
1006 u32 PayloadLen = FrameSize;
1007 u8 *pbyIV;
1008 u8 byKeyIdx;
1009 PSKeyItem pKey = NULL;
1010 u8 byDecMode = KEY_CTL_WEP;
1011
1012 *pwRxTSC15_0 = 0;
1013 *pdwRxTSC47_16 = 0;
1014
1015 pbyIV = pbyFrame + WLAN_HDR_ADDR3_LEN;
1016 if ( WLAN_GET_FC_TODS(*(u16 *)pbyFrame) &&
1017 WLAN_GET_FC_FROMDS(*(u16 *)pbyFrame) ) {
1018 pbyIV += 6; // 6 is 802.11 address4
1019 PayloadLen -= 6;
1020 }
1021 byKeyIdx = (*(pbyIV+3) & 0xc0);
1022 byKeyIdx >>= 6;
1023 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"\nKeyIdx: %d\n", byKeyIdx);
1024
1025 if ((pMgmt->eAuthenMode == WMAC_AUTH_WPA) ||
1026 (pMgmt->eAuthenMode == WMAC_AUTH_WPAPSK) ||
1027 (pMgmt->eAuthenMode == WMAC_AUTH_WPANONE) ||
1028 (pMgmt->eAuthenMode == WMAC_AUTH_WPA2) ||
1029 (pMgmt->eAuthenMode == WMAC_AUTH_WPA2PSK)) {
1030 if (((*pbyRsr & (RSR_ADDRBROAD | RSR_ADDRMULTI)) == 0) &&
1031 (pMgmt->byCSSPK != KEY_CTL_NONE)) {
1032 // unicast pkt use pairwise key
1033 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"unicast pkt\n");
1034 if (KeybGetKey(&(pDevice->sKey), pDevice->abyBSSID, 0xFFFFFFFF, &pKey) == true) {
1035 if (pMgmt->byCSSPK == KEY_CTL_TKIP)
1036 byDecMode = KEY_CTL_TKIP;
1037 else if (pMgmt->byCSSPK == KEY_CTL_CCMP)
1038 byDecMode = KEY_CTL_CCMP;
1039 }
1040 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"unicast pkt: %d, %p\n", byDecMode, pKey);
1041 } else {
1042 // use group key
1043 KeybGetKey(&(pDevice->sKey), pDevice->abyBSSID, byKeyIdx, &pKey);
1044 if (pMgmt->byCSSGK == KEY_CTL_TKIP)
1045 byDecMode = KEY_CTL_TKIP;
1046 else if (pMgmt->byCSSGK == KEY_CTL_CCMP)
1047 byDecMode = KEY_CTL_CCMP;
1048 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"group pkt: %d, %d, %p\n", byKeyIdx, byDecMode, pKey);
1049 }
1050 }
1051 // our WEP only support Default Key
1052 if (pKey == NULL) {
1053 // use default group key
1054 KeybGetKey(&(pDevice->sKey), pDevice->abyBroadcastAddr, byKeyIdx, &pKey);
1055 if (pMgmt->byCSSGK == KEY_CTL_TKIP)
1056 byDecMode = KEY_CTL_TKIP;
1057 else if (pMgmt->byCSSGK == KEY_CTL_CCMP)
1058 byDecMode = KEY_CTL_CCMP;
1059 }
1060 *pKeyOut = pKey;
1061
1062 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"AES:%d %d %d\n", pMgmt->byCSSPK, pMgmt->byCSSGK, byDecMode);
1063
1064 if (pKey == NULL) {
1065 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"pKey == NULL\n");
1066 if (byDecMode == KEY_CTL_WEP) {
1067 // pDevice->s802_11Counter.WEPUndecryptableCount.QuadPart++;
1068 } else if (pDevice->bLinkPass == true) {
1069 // pDevice->s802_11Counter.DecryptFailureCount.QuadPart++;
1070 }
1071 return false;
1072 }
1073 if (byDecMode != pKey->byCipherSuite) {
1074 if (byDecMode == KEY_CTL_WEP) {
1075 // pDevice->s802_11Counter.WEPUndecryptableCount.QuadPart++;
1076 } else if (pDevice->bLinkPass == true) {
1077 // pDevice->s802_11Counter.DecryptFailureCount.QuadPart++;
1078 }
1079 *pKeyOut = NULL;
1080 return false;
1081 }
1082 if (byDecMode == KEY_CTL_WEP) {
1083 // handle WEP
1084 if ((pDevice->byLocalID <= REV_ID_VT3253_A1) ||
1085 (((PSKeyTable)(pKey->pvKeyTable))->bSoftWEP == true)) {
1086 // Software WEP
1087 // 1. 3253A
1088 // 2. WEP 256
1089
1090 PayloadLen -= (WLAN_HDR_ADDR3_LEN + 4 + 4); // 24 is 802.11 header,4 is IV, 4 is crc
1091 memcpy(pDevice->abyPRNG, pbyIV, 3);
1092 memcpy(pDevice->abyPRNG + 3, pKey->abyKey, pKey->uKeyLength);
1093 rc4_init(&pDevice->SBox, pDevice->abyPRNG, pKey->uKeyLength + 3);
1094 rc4_encrypt(&pDevice->SBox, pbyIV+4, pbyIV+4, PayloadLen);
1095
1096 if (ETHbIsBufferCrc32Ok(pbyIV+4, PayloadLen)) {
1097 *pbyNewRsr |= NEWRSR_DECRYPTOK;
1098 }
1099 }
1100 } else if ((byDecMode == KEY_CTL_TKIP) ||
1101 (byDecMode == KEY_CTL_CCMP)) {
1102 // TKIP/AES
1103
1104 PayloadLen -= (WLAN_HDR_ADDR3_LEN + 8 + 4); // 24 is 802.11 header, 8 is IV&ExtIV, 4 is crc
1105 *pdwRxTSC47_16 = cpu_to_le32(*(u32 *)(pbyIV + 4));
1106 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ExtIV: %x\n", *pdwRxTSC47_16);
1107 if (byDecMode == KEY_CTL_TKIP) {
1108 *pwRxTSC15_0 = cpu_to_le16(MAKEWORD(*(pbyIV+2), *pbyIV));
1109 } else {
1110 *pwRxTSC15_0 = cpu_to_le16(*(u16 *)pbyIV);
1111 }
1112 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"TSC0_15: %x\n", *pwRxTSC15_0);
1113
1114 if ((byDecMode == KEY_CTL_TKIP) &&
1115 (pDevice->byLocalID <= REV_ID_VT3253_A1)) {
1116 // Software TKIP
1117 // 1. 3253 A
1118 struct ieee80211_hdr *pMACHeader = (struct ieee80211_hdr *) (pbyFrame);
1119 TKIPvMixKey(pKey->abyKey, pMACHeader->addr2, *pwRxTSC15_0, *pdwRxTSC47_16, pDevice->abyPRNG);
1120 rc4_init(&pDevice->SBox, pDevice->abyPRNG, TKIP_KEY_LEN);
1121 rc4_encrypt(&pDevice->SBox, pbyIV+8, pbyIV+8, PayloadLen);
1122 if (ETHbIsBufferCrc32Ok(pbyIV+8, PayloadLen)) {
1123 *pbyNewRsr |= NEWRSR_DECRYPTOK;
1124 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ICV OK!\n");
1125 } else {
1126 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ICV FAIL!!!\n");
1127 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"PayloadLen = %d\n", PayloadLen);
1128 }
1129 }
1130 }// end of TKIP/AES
1131
1132 if ((*(pbyIV+3) & 0x20) != 0)
1133 *pbExtIV = true;
1134 return true;
1135 }
1136
1137 static int s_bHostWepRxEncryption(struct vnt_private *pDevice, u8 *pbyFrame,
1138 u32 FrameSize, u8 *pbyRsr, int bOnFly, PSKeyItem pKey, u8 *pbyNewRsr,
1139 s32 *pbExtIV, u16 *pwRxTSC15_0, u32 *pdwRxTSC47_16)
1140 {
1141 struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
1142 struct ieee80211_hdr *pMACHeader;
1143 u32 PayloadLen = FrameSize;
1144 u8 *pbyIV;
1145 u8 byKeyIdx;
1146 u8 byDecMode = KEY_CTL_WEP;
1147
1148 *pwRxTSC15_0 = 0;
1149 *pdwRxTSC47_16 = 0;
1150
1151 pbyIV = pbyFrame + WLAN_HDR_ADDR3_LEN;
1152 if ( WLAN_GET_FC_TODS(*(u16 *)pbyFrame) &&
1153 WLAN_GET_FC_FROMDS(*(u16 *)pbyFrame) ) {
1154 pbyIV += 6; // 6 is 802.11 address4
1155 PayloadLen -= 6;
1156 }
1157 byKeyIdx = (*(pbyIV+3) & 0xc0);
1158 byKeyIdx >>= 6;
1159 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"\nKeyIdx: %d\n", byKeyIdx);
1160
1161 if (pMgmt->byCSSGK == KEY_CTL_TKIP)
1162 byDecMode = KEY_CTL_TKIP;
1163 else if (pMgmt->byCSSGK == KEY_CTL_CCMP)
1164 byDecMode = KEY_CTL_CCMP;
1165
1166 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"AES:%d %d %d\n", pMgmt->byCSSPK, pMgmt->byCSSGK, byDecMode);
1167
1168 if (byDecMode != pKey->byCipherSuite) {
1169 if (byDecMode == KEY_CTL_WEP) {
1170 // pDevice->s802_11Counter.WEPUndecryptableCount.QuadPart++;
1171 } else if (pDevice->bLinkPass == true) {
1172 // pDevice->s802_11Counter.DecryptFailureCount.QuadPart++;
1173 }
1174 return false;
1175 }
1176
1177 if (byDecMode == KEY_CTL_WEP) {
1178 // handle WEP
1179 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"byDecMode == KEY_CTL_WEP\n");
1180 if ((pDevice->byLocalID <= REV_ID_VT3253_A1) ||
1181 (((PSKeyTable)(pKey->pvKeyTable))->bSoftWEP == true) ||
1182 (bOnFly == false)) {
1183 // Software WEP
1184 // 1. 3253A
1185 // 2. WEP 256
1186 // 3. NotOnFly
1187
1188 PayloadLen -= (WLAN_HDR_ADDR3_LEN + 4 + 4); // 24 is 802.11 header,4 is IV, 4 is crc
1189 memcpy(pDevice->abyPRNG, pbyIV, 3);
1190 memcpy(pDevice->abyPRNG + 3, pKey->abyKey, pKey->uKeyLength);
1191 rc4_init(&pDevice->SBox, pDevice->abyPRNG, pKey->uKeyLength + 3);
1192 rc4_encrypt(&pDevice->SBox, pbyIV+4, pbyIV+4, PayloadLen);
1193
1194 if (ETHbIsBufferCrc32Ok(pbyIV+4, PayloadLen)) {
1195 *pbyNewRsr |= NEWRSR_DECRYPTOK;
1196 }
1197 }
1198 } else if ((byDecMode == KEY_CTL_TKIP) ||
1199 (byDecMode == KEY_CTL_CCMP)) {
1200 // TKIP/AES
1201
1202 PayloadLen -= (WLAN_HDR_ADDR3_LEN + 8 + 4); // 24 is 802.11 header, 8 is IV&ExtIV, 4 is crc
1203 *pdwRxTSC47_16 = cpu_to_le32(*(u32 *)(pbyIV + 4));
1204 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ExtIV: %x\n", *pdwRxTSC47_16);
1205
1206 if (byDecMode == KEY_CTL_TKIP) {
1207 *pwRxTSC15_0 = cpu_to_le16(MAKEWORD(*(pbyIV+2), *pbyIV));
1208 } else {
1209 *pwRxTSC15_0 = cpu_to_le16(*(u16 *)pbyIV);
1210 }
1211 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"TSC0_15: %x\n", *pwRxTSC15_0);
1212
1213 if (byDecMode == KEY_CTL_TKIP) {
1214
1215 if ((pDevice->byLocalID <= REV_ID_VT3253_A1) || (bOnFly == false)) {
1216 // Software TKIP
1217 // 1. 3253 A
1218 // 2. NotOnFly
1219 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"soft KEY_CTL_TKIP \n");
1220 pMACHeader = (struct ieee80211_hdr *) (pbyFrame);
1221 TKIPvMixKey(pKey->abyKey, pMACHeader->addr2, *pwRxTSC15_0, *pdwRxTSC47_16, pDevice->abyPRNG);
1222 rc4_init(&pDevice->SBox, pDevice->abyPRNG, TKIP_KEY_LEN);
1223 rc4_encrypt(&pDevice->SBox, pbyIV+8, pbyIV+8, PayloadLen);
1224 if (ETHbIsBufferCrc32Ok(pbyIV+8, PayloadLen)) {
1225 *pbyNewRsr |= NEWRSR_DECRYPTOK;
1226 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ICV OK!\n");
1227 } else {
1228 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"ICV FAIL!!!\n");
1229 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"PayloadLen = %d\n", PayloadLen);
1230 }
1231 }
1232 }
1233
1234 if (byDecMode == KEY_CTL_CCMP) {
1235 if (bOnFly == false) {
1236 // Software CCMP
1237 // NotOnFly
1238 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"soft KEY_CTL_CCMP\n");
1239 if (AESbGenCCMP(pKey->abyKey, pbyFrame, FrameSize)) {
1240 *pbyNewRsr |= NEWRSR_DECRYPTOK;
1241 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"CCMP MIC compare OK!\n");
1242 } else {
1243 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"CCMP MIC fail!\n");
1244 }
1245 }
1246 }
1247
1248 }// end of TKIP/AES
1249
1250 if ((*(pbyIV+3) & 0x20) != 0)
1251 *pbExtIV = true;
1252 return true;
1253 }
1254
1255 static int s_bAPModeRxData(struct vnt_private *pDevice, struct sk_buff *skb,
1256 u32 FrameSize, u32 cbHeaderOffset, s32 iSANodeIndex, s32 iDANodeIndex)
1257 {
1258 struct sk_buff *skbcpy;
1259 struct vnt_manager *pMgmt = &pDevice->vnt_mgmt;
1260 int bRelayAndForward = false;
1261 int bRelayOnly = false;
1262 u8 byMask[8] = {1, 2, 4, 8, 0x10, 0x20, 0x40, 0x80};
1263 u16 wAID;
1264
1265 if (FrameSize > CB_MAX_BUF_SIZE)
1266 return false;
1267 // check DA
1268 if (is_multicast_ether_addr((u8 *)(skb->data+cbHeaderOffset))) {
1269 if (pMgmt->sNodeDBTable[0].bPSEnable) {
1270
1271 skbcpy = dev_alloc_skb((int)pDevice->rx_buf_sz);
1272
1273 // if any node in PS mode, buffer packet until DTIM.
1274 if (skbcpy == NULL) {
1275 DBG_PRT(MSG_LEVEL_NOTICE, KERN_INFO "relay multicast no skb available \n");
1276 }
1277 else {
1278 skbcpy->dev = pDevice->dev;
1279 skbcpy->len = FrameSize;
1280 memcpy(skbcpy->data, skb->data+cbHeaderOffset, FrameSize);
1281 skb_queue_tail(&(pMgmt->sNodeDBTable[0].sTxPSQueue), skbcpy);
1282 pMgmt->sNodeDBTable[0].wEnQueueCnt++;
1283 // set tx map
1284 pMgmt->abyPSTxMap[0] |= byMask[0];
1285 }
1286 }
1287 else {
1288 bRelayAndForward = true;
1289 }
1290 }
1291 else {
1292 // check if relay
1293 if (BSSbIsSTAInNodeDB(pDevice, (u8 *)(skb->data+cbHeaderOffset), &iDANodeIndex)) {
1294 if (pMgmt->sNodeDBTable[iDANodeIndex].eNodeState >= NODE_ASSOC) {
1295 if (pMgmt->sNodeDBTable[iDANodeIndex].bPSEnable) {
1296 // queue this skb until next PS tx, and then release.
1297
1298 skb->data += cbHeaderOffset;
1299 skb->tail += cbHeaderOffset;
1300 skb_put(skb, FrameSize);
1301 skb_queue_tail(&pMgmt->sNodeDBTable[iDANodeIndex].sTxPSQueue, skb);
1302
1303 pMgmt->sNodeDBTable[iDANodeIndex].wEnQueueCnt++;
1304 wAID = pMgmt->sNodeDBTable[iDANodeIndex].wAID;
1305 pMgmt->abyPSTxMap[wAID >> 3] |= byMask[wAID & 7];
1306 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "relay: index= %d, pMgmt->abyPSTxMap[%d]= %d\n",
1307 iDANodeIndex, (wAID >> 3), pMgmt->abyPSTxMap[wAID >> 3]);
1308 return true;
1309 }
1310 else {
1311 bRelayOnly = true;
1312 }
1313 }
1314 }
1315 }
1316
1317 if (bRelayOnly || bRelayAndForward) {
1318 // relay this packet right now
1319 if (bRelayAndForward)
1320 iDANodeIndex = 0;
1321
1322 if ((pDevice->uAssocCount > 1) && (iDANodeIndex >= 0)) {
1323 bRelayPacketSend(pDevice, (u8 *) (skb->data + cbHeaderOffset),
1324 FrameSize, (unsigned int) iDANodeIndex);
1325 }
1326
1327 if (bRelayOnly)
1328 return false;
1329 }
1330 // none associate, don't forward
1331 if (pDevice->uAssocCount == 0)
1332 return false;
1333
1334 return true;
1335 }
1336
1337 void RXvWorkItem(struct vnt_private *pDevice)
1338 {
1339 int ntStatus;
1340 PRCB pRCB = NULL;
1341
1342 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->Rx Polling Thread\n");
1343 spin_lock_irq(&pDevice->lock);
1344
1345 while ((pDevice->Flags & fMP_POST_READS) &&
1346 MP_IS_READY(pDevice) &&
1347 (pDevice->NumRecvFreeList != 0) ) {
1348 pRCB = pDevice->FirstRecvFreeList;
1349 pDevice->NumRecvFreeList--;
1350 ASSERT(pRCB);// cannot be NULL
1351 DequeueRCB(pDevice->FirstRecvFreeList, pDevice->LastRecvFreeList);
1352 ntStatus = PIPEnsBulkInUsbRead(pDevice, pRCB);
1353 }
1354 pDevice->bIsRxWorkItemQueued = false;
1355 spin_unlock_irq(&pDevice->lock);
1356
1357 }
1358
1359 void RXvFreeRCB(PRCB pRCB, int bReAllocSkb)
1360 {
1361 struct vnt_private *pDevice = pRCB->pDevice;
1362
1363 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->RXvFreeRCB\n");
1364
1365 ASSERT(!pRCB->Ref); // should be 0
1366 ASSERT(pRCB->pDevice); // shouldn't be NULL
1367
1368 if (bReAllocSkb == false) {
1369 kfree_skb(pRCB->skb);
1370 bReAllocSkb = true;
1371 }
1372
1373 if (bReAllocSkb == true) {
1374 pRCB->skb = dev_alloc_skb((int)pDevice->rx_buf_sz);
1375 // todo error handling
1376 if (pRCB->skb == NULL) {
1377 DBG_PRT(MSG_LEVEL_ERR,KERN_ERR" Failed to re-alloc rx skb\n");
1378 }else {
1379 pRCB->skb->dev = pDevice->dev;
1380 }
1381 }
1382 //
1383 // Insert the RCB back in the Recv free list
1384 //
1385 EnqueueRCB(pDevice->FirstRecvFreeList, pDevice->LastRecvFreeList, pRCB);
1386 pDevice->NumRecvFreeList++;
1387
1388 if ((pDevice->Flags & fMP_POST_READS) && MP_IS_READY(pDevice) &&
1389 (pDevice->bIsRxWorkItemQueued == false) ) {
1390
1391 pDevice->bIsRxWorkItemQueued = true;
1392 tasklet_schedule(&pDevice->ReadWorkItem);
1393 }
1394 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"<----RXFreeRCB %d %d\n",pDevice->NumRecvFreeList, pDevice->NumRecvMngList);
1395 }
1396
1397 void RXvMngWorkItem(struct vnt_private *pDevice)
1398 {
1399 PRCB pRCB = NULL;
1400 struct vnt_rx_mgmt *pRxPacket;
1401 int bReAllocSkb = false;
1402
1403 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"---->Rx Mng Thread\n");
1404
1405 spin_lock_irq(&pDevice->lock);
1406 while (pDevice->NumRecvMngList!=0)
1407 {
1408 pRCB = pDevice->FirstRecvMngList;
1409 pDevice->NumRecvMngList--;
1410 DequeueRCB(pDevice->FirstRecvMngList, pDevice->LastRecvMngList);
1411 if(!pRCB){
1412 break;
1413 }
1414 ASSERT(pRCB);// cannot be NULL
1415 pRxPacket = &(pRCB->sMngPacket);
1416 vMgrRxManagePacket(pDevice, &pDevice->vnt_mgmt, pRxPacket);
1417 pRCB->Ref--;
1418 if(pRCB->Ref == 0) {
1419 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"RxvFreeMng %d %d\n",pDevice->NumRecvFreeList, pDevice->NumRecvMngList);
1420 RXvFreeRCB(pRCB, bReAllocSkb);
1421 } else {
1422 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO"Rx Mng Only we have the right to free RCB\n");
1423 }
1424 }
1425
1426 pDevice->bIsRxMngWorkItemQueued = false;
1427 spin_unlock_irq(&pDevice->lock);
1428
1429 }
1430
Linux with added FPC-III support