forked from yuanmaomao/NDIS_Firewall
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathprotocol.c
1661 lines (1327 loc) · 47.5 KB
/
protocol.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*++
Copyright(c) 1992-2000 Microsoft Corporation
Module Name:
protocol.c
Abstract:
Ndis Intermediate Miniport driver sample. This is a passthru driver.
Author:
Environment:
Revision History:
--*/
#include "precomp.h"
#pragma hdrstop
#define MAX_PACKET_POOL_SIZE 0x0000FFFF
#define MIN_PACKET_POOL_SIZE 0x000000FF
NDIS_STATUS AnalysisPacket(PNDIS_PACKET Packet, BOOLEAN bRecOrSend);
//
// NDIS version as 0xMMMMmmmm, where M=Major/m=minor (0x00050001 = 5.1);
// initially unknown (0)
//
ULONG NdisDotSysVersion = 0x0;
#define NDIS_SYS_VERSION_51 0x00050001
VOID
PtBindAdapter(
OUT PNDIS_STATUS Status,
IN NDIS_HANDLE BindContext,
IN PNDIS_STRING DeviceName,
IN PVOID SystemSpecific1,
IN PVOID SystemSpecific2
)
/*++
Routine Description:
Called by NDIS to bind to a miniport below.
Arguments:
Status - Return status of bind here.
BindContext - Can be passed to NdisCompleteBindAdapter if this call is pended.
DeviceName - Device name to bind to. This is passed to NdisOpenAdapter.
SystemSpecific1 - Can be passed to NdisOpenProtocolConfiguration to read per-binding information
SystemSpecific2 - Unused
Return Value:
NDIS_STATUS_PENDING if this call is pended. In this case call NdisCompleteBindAdapter
to complete.
Anything else Completes this call synchronously
--*/
{
NDIS_HANDLE ConfigHandle = NULL;
PNDIS_CONFIGURATION_PARAMETER Param;
NDIS_STRING DeviceStr = NDIS_STRING_CONST("UpperBindings");
NDIS_STRING NdisVersionStr = NDIS_STRING_CONST("NdisVersion");
PADAPT pAdapt = NULL;
NDIS_STATUS Sts;
UINT MediumIndex;
ULONG TotalSize;
BOOLEAN NoCleanUpNeeded = FALSE;
UNREFERENCED_PARAMETER(BindContext);
UNREFERENCED_PARAMETER(SystemSpecific2);
DBGPRINT(("==> Protocol BindAdapter\n"));
do
{
//
// Access the configuration section for our binding-specific
// parameters.
//
NdisOpenProtocolConfiguration(Status,
&ConfigHandle,
SystemSpecific1);
if (*Status != NDIS_STATUS_SUCCESS)
{
break;
}
if (NdisDotSysVersion == 0)
{
NdisReadConfiguration(Status,
&Param,
ConfigHandle,
&NdisVersionStr, // "NdisVersion"
NdisParameterInteger);
if (*Status != NDIS_STATUS_SUCCESS)
{
break;
}
NdisDotSysVersion = Param->ParameterData.IntegerData;
}
//
// Read the "UpperBindings" reserved key that contains a list
// of device names representing our miniport instances corresponding
// to this lower binding. Since this is a 1:1 IM driver, this key
// contains exactly one name.
//
// If we want to implement a N:1 mux driver (N adapter instances
// over a single lower binding), then UpperBindings will be a
// MULTI_SZ containing a list of device names - we would loop through
// this list, calling NdisIMInitializeDeviceInstanceEx once for
// each name in it.
//
NdisReadConfiguration(Status,
&Param,
ConfigHandle,
&DeviceStr,
NdisParameterString);
if (*Status != NDIS_STATUS_SUCCESS)
{
break;
}
//
// Allocate memory for the Adapter structure. This represents both the
// protocol context as well as the adapter structure when the miniport
// is initialized.
//
// In addition to the base structure, allocate space for the device
// instance string.
//
TotalSize = sizeof(ADAPT) + Param->ParameterData.StringData.MaximumLength;
NdisAllocateMemoryWithTag(&pAdapt, TotalSize, TAG);
if (pAdapt == NULL)
{
*Status = NDIS_STATUS_RESOURCES;
break;
}
//
// Initialize the adapter structure. We copy in the IM device
// name as well, because we may need to use it in a call to
// NdisIMCancelInitializeDeviceInstance. The string returned
// by NdisReadConfiguration is active (i.e. available) only
// for the duration of this call to our BindAdapter handler.
//
NdisZeroMemory(pAdapt, TotalSize);
pAdapt->DeviceName.MaximumLength = Param->ParameterData.StringData.MaximumLength;
pAdapt->DeviceName.Length = Param->ParameterData.StringData.Length;
pAdapt->DeviceName.Buffer = (PWCHAR)((ULONG_PTR)pAdapt + sizeof(ADAPT));
NdisMoveMemory(pAdapt->DeviceName.Buffer,
Param->ParameterData.StringData.Buffer,
Param->ParameterData.StringData.MaximumLength);
NdisInitializeEvent(&pAdapt->Event);
NdisAllocateSpinLock(&pAdapt->Lock);
//
// Allocate a packet pool for sends. We need this to pass sends down.
// We cannot use the same packet descriptor that came down to our send
// handler (see also NDIS 5.1 packet stacking).
//
NdisAllocatePacketPoolEx(Status,
&pAdapt->SendPacketPoolHandle,
MIN_PACKET_POOL_SIZE,
MAX_PACKET_POOL_SIZE - MIN_PACKET_POOL_SIZE,
sizeof(SEND_RSVD));
if (*Status != NDIS_STATUS_SUCCESS)
{
break;
}
//
// Allocate a packet pool for receives. We need this to indicate receives.
// Same consideration as sends (see also NDIS 5.1 packet stacking).
//
NdisAllocatePacketPoolEx(Status,
&pAdapt->RecvPacketPoolHandle,
MIN_PACKET_POOL_SIZE,
MAX_PACKET_POOL_SIZE - MIN_PACKET_POOL_SIZE,
PROTOCOL_RESERVED_SIZE_IN_PACKET);
if (*Status != NDIS_STATUS_SUCCESS)
{
break;
}
//
// Now open the adapter below and complete the initialization
//
NdisOpenAdapter(Status,
&Sts,
&pAdapt->BindingHandle,
&MediumIndex,
MediumArray,
sizeof(MediumArray)/sizeof(NDIS_MEDIUM),
ProtHandle,
pAdapt,
DeviceName,
0,
NULL);
if (*Status == NDIS_STATUS_PENDING)
{
NdisWaitEvent(&pAdapt->Event, 0);
*Status = pAdapt->Status;
}
if (*Status != NDIS_STATUS_SUCCESS)
{
break;
}
PtReferenceAdapt(pAdapt);
#pragma prefast(suppress: __WARNING_POTENTIAL_BUFFER_OVERFLOW, "Ndis guarantees MediumIndex to be within bounds");
pAdapt->Medium = MediumArray[MediumIndex];
//
// Now ask NDIS to initialize our miniport (upper) edge.
// Set the flag below to synchronize with a possible call
// to our protocol Unbind handler that may come in before
// our miniport initialization happens.
//
pAdapt->MiniportInitPending = TRUE;
NdisInitializeEvent(&pAdapt->MiniportInitEvent);
PtReferenceAdapt(pAdapt);
*Status = NdisIMInitializeDeviceInstanceEx(DriverHandle,
&pAdapt->DeviceName,
pAdapt);
if (*Status != NDIS_STATUS_SUCCESS)
{
if (pAdapt->MiniportIsHalted == TRUE)
{
NoCleanUpNeeded = TRUE;
}
DBGPRINT(("BindAdapter: Adapt %p, IMInitializeDeviceInstance error %x\n",
pAdapt, *Status));
if (PtDereferenceAdapt(pAdapt))
{
pAdapt = NULL;
}
break;
}
PtDereferenceAdapt(pAdapt);
} while(FALSE);
//
// Close the configuration handle now - see comments above with
// the call to NdisIMInitializeDeviceInstanceEx.
//
if (ConfigHandle != NULL)
{
NdisCloseConfiguration(ConfigHandle);
}
if ((*Status != NDIS_STATUS_SUCCESS) && (NoCleanUpNeeded == FALSE))
{
if (pAdapt != NULL)
{
if (pAdapt->BindingHandle != NULL)
{
NDIS_STATUS LocalStatus;
//
// Close the binding we opened above.
//
NdisResetEvent(&pAdapt->Event);
NdisCloseAdapter(&LocalStatus, pAdapt->BindingHandle);
pAdapt->BindingHandle = NULL;
if (LocalStatus == NDIS_STATUS_PENDING)
{
NdisWaitEvent(&pAdapt->Event, 0);
LocalStatus = pAdapt->Status;
}
if (PtDereferenceAdapt(pAdapt))
{
pAdapt = NULL;
}
}
}
}
DBGPRINT(("<== Protocol BindAdapter: pAdapt %p, Status %x\n", pAdapt, *Status));
}
VOID
PtOpenAdapterComplete(
IN NDIS_HANDLE ProtocolBindingContext,
IN NDIS_STATUS Status,
IN NDIS_STATUS OpenErrorStatus
)
/*++
Routine Description:
Completion routine for NdisOpenAdapter issued from within the PtBindAdapter. Simply
unblock the caller.
Arguments:
ProtocolBindingContext Pointer to the adapter
Status Status of the NdisOpenAdapter call
OpenErrorStatus Secondary status(ignored by us).
Return Value:
None
--*/
{
PADAPT pAdapt =(PADAPT)ProtocolBindingContext;
UNREFERENCED_PARAMETER(OpenErrorStatus);
DBGPRINT(("==> PtOpenAdapterComplete: Adapt %p, Status %x\n", pAdapt, Status));
pAdapt->Status = Status;
NdisSetEvent(&pAdapt->Event);
}
VOID
PtUnbindAdapter(
OUT PNDIS_STATUS Status,
IN NDIS_HANDLE ProtocolBindingContext,
IN NDIS_HANDLE UnbindContext
)
/*++
Routine Description:
Called by NDIS when we are required to unbind to the adapter below.
This functions shares functionality with the miniport's HaltHandler.
The code should ensure that NdisCloseAdapter and NdisFreeMemory is called
only once between the two functions
Arguments:
Status Placeholder for return status
ProtocolBindingContext Pointer to the adapter structure
UnbindContext Context for NdisUnbindComplete() if this pends
Return Value:
Status for NdisIMDeinitializeDeviceContext
--*/
{
PADAPT pAdapt =(PADAPT)ProtocolBindingContext;
NDIS_STATUS LocalStatus;
UNREFERENCED_PARAMETER(UnbindContext);
DBGPRINT(("==> PtUnbindAdapter: Adapt %p\n", pAdapt));
//
// Set the flag that the miniport below is unbinding, so the request handlers will
// fail any request comming later
//
NdisAcquireSpinLock(&pAdapt->Lock);
pAdapt->UnbindingInProcess = TRUE;
if (pAdapt->QueuedRequest == TRUE)
{
pAdapt->QueuedRequest = FALSE;
NdisReleaseSpinLock(&pAdapt->Lock);
PtRequestComplete(pAdapt,
&pAdapt->Request,
NDIS_STATUS_FAILURE );
}
else
{
NdisReleaseSpinLock(&pAdapt->Lock);
}
#ifndef WIN9X
//
// Check if we had called NdisIMInitializeDeviceInstanceEx and
// we are awaiting a call to MiniportInitialize.
//
if (pAdapt->MiniportInitPending == TRUE)
{
//
// Try to cancel the pending IMInit process.
//
LocalStatus = NdisIMCancelInitializeDeviceInstance(
DriverHandle,
&pAdapt->DeviceName);
if (LocalStatus == NDIS_STATUS_SUCCESS)
{
//
// Successfully cancelled IM Initialization; our
// Miniport Initialize routine will not be called
// for this device.
//
pAdapt->MiniportInitPending = FALSE;
ASSERT(pAdapt->MiniportHandle == NULL);
}
else
{
//
// Our Miniport Initialize routine will be called
// (may be running on another thread at this time).
// Wait for it to finish.
//
NdisWaitEvent(&pAdapt->MiniportInitEvent, 0);
ASSERT(pAdapt->MiniportInitPending == FALSE);
}
}
#endif // !WIN9X
//
// Call NDIS to remove our device-instance. We do most of the work
// inside the HaltHandler.
//
// The Handle will be NULL if our miniport Halt Handler has been called or
// if the IM device was never initialized
//
if (pAdapt->MiniportHandle != NULL)
{
*Status = NdisIMDeInitializeDeviceInstance(pAdapt->MiniportHandle);
if (*Status != NDIS_STATUS_SUCCESS)
{
*Status = NDIS_STATUS_FAILURE;
}
}
else
{
//
// We need to do some work here.
// Close the binding below us
// and release the memory allocated.
//
if(pAdapt->BindingHandle != NULL)
{
NdisResetEvent(&pAdapt->Event);
NdisCloseAdapter(Status, pAdapt->BindingHandle);
//
// Wait for it to complete
//
if(*Status == NDIS_STATUS_PENDING)
{
NdisWaitEvent(&pAdapt->Event, 0);
*Status = pAdapt->Status;
}
pAdapt->BindingHandle = NULL;
}
else
{
//
// Both Our MiniportHandle and Binding Handle should not be NULL.
//
*Status = NDIS_STATUS_FAILURE;
ASSERT(0);
}
//
// Free the memory here, if was not released earlier(by calling the HaltHandler)
//
MPFreeAllPacketPools(pAdapt);
NdisFreeSpinLock(&pAdapt->Lock);
NdisFreeMemory(pAdapt, 0, 0);
}
DBGPRINT(("<== PtUnbindAdapter: Adapt %p\n", pAdapt));
}
VOID
PtUnloadProtocol(
VOID
)
{
NDIS_STATUS Status;
if (ProtHandle != NULL)
{
NdisDeregisterProtocol(&Status, ProtHandle);
ProtHandle = NULL;
}
// 删除WDM控制设备
if(gDeviceObject != NULL){
IoDeleteDevice(gDeviceObject);
gDeviceObject = NULL;
}
DBGPRINT(("PtUnloadProtocol: done!\n"));
}
VOID
PtCloseAdapterComplete(
IN NDIS_HANDLE ProtocolBindingContext,
IN NDIS_STATUS Status
)
/*++
Routine Description:
Completion for the CloseAdapter call.
Arguments:
ProtocolBindingContext Pointer to the adapter structure
Status Completion status
Return Value:
None.
--*/
{
PADAPT pAdapt =(PADAPT)ProtocolBindingContext;
DBGPRINT(("CloseAdapterComplete: Adapt %p, Status %x\n", pAdapt, Status));
pAdapt->Status = Status;
NdisSetEvent(&pAdapt->Event);
}
VOID
PtResetComplete(
IN NDIS_HANDLE ProtocolBindingContext,
IN NDIS_STATUS Status
)
/*++
Routine Description:
Completion for the reset.
Arguments:
ProtocolBindingContext Pointer to the adapter structure
Status Completion status
Return Value:
None.
--*/
{
UNREFERENCED_PARAMETER(ProtocolBindingContext);
UNREFERENCED_PARAMETER(Status);
//
// We never issue a reset, so we should not be here.
//
ASSERT(0);
}
VOID
PtRequestComplete(
IN NDIS_HANDLE ProtocolBindingContext,
IN PNDIS_REQUEST NdisRequest,
IN NDIS_STATUS Status
)
/*++
Routine Description:
Completion handler for the previously posted request. All OIDS
are completed by and sent to the same miniport that they were requested for.
If Oid == OID_PNP_QUERY_POWER then the data structure needs to returned with all entries =
NdisDeviceStateUnspecified
Arguments:
ProtocolBindingContext Pointer to the adapter structure
NdisRequest The posted request
Status Completion status
Return Value:
None
--*/
{
PADAPT pAdapt = (PADAPT)ProtocolBindingContext;
NDIS_OID Oid = pAdapt->Request.DATA.SET_INFORMATION.Oid ;
//
// Since our request is not outstanding anymore
//
ASSERT(pAdapt->OutstandingRequests == TRUE);
pAdapt->OutstandingRequests = FALSE;
//
// Complete the Set or Query, and fill in the buffer for OID_PNP_CAPABILITIES, if need be.
//
switch (NdisRequest->RequestType)
{
case NdisRequestQueryInformation:
//
// We never pass OID_PNP_QUERY_POWER down.
//
ASSERT(Oid != OID_PNP_QUERY_POWER);
if ((Oid == OID_PNP_CAPABILITIES) && (Status == NDIS_STATUS_SUCCESS))
{
MPQueryPNPCapabilities(pAdapt, &Status);
}
*pAdapt->BytesReadOrWritten = NdisRequest->DATA.QUERY_INFORMATION.BytesWritten;
*pAdapt->BytesNeeded = NdisRequest->DATA.QUERY_INFORMATION.BytesNeeded;
if (((Oid == OID_GEN_MAC_OPTIONS)
&& (Status == NDIS_STATUS_SUCCESS))
&& (NdisDotSysVersion >= NDIS_SYS_VERSION_51))
{
//
// Only do this on Windows XP or greater (NDIS.SYS v 5.1);
// do not do in Windows 2000 (NDIS.SYS v 5.0))
//
//
// Remove the no-loopback bit from mac-options. In essence we are
// telling NDIS that we can handle loopback. We don't, but the
// interface below us does. If we do not do this, then loopback
// processing happens both below us and above us. This is wasteful
// at best and if Netmon is running, it will see multiple copies
// of loopback packets when sniffing above us.
//
// Only the lowest miniport is a stack of layered miniports should
// ever report this bit set to NDIS.
//
*(PULONG)NdisRequest->DATA.QUERY_INFORMATION.InformationBuffer &= ~NDIS_MAC_OPTION_NO_LOOPBACK;
}
NdisMQueryInformationComplete(pAdapt->MiniportHandle,
Status);
break;
case NdisRequestSetInformation:
ASSERT( Oid != OID_PNP_SET_POWER);
*pAdapt->BytesReadOrWritten = NdisRequest->DATA.SET_INFORMATION.BytesRead;
*pAdapt->BytesNeeded = NdisRequest->DATA.SET_INFORMATION.BytesNeeded;
NdisMSetInformationComplete(pAdapt->MiniportHandle,
Status);
break;
default:
ASSERT(0);
break;
}
}
VOID
PtStatus(
IN NDIS_HANDLE ProtocolBindingContext,
IN NDIS_STATUS GeneralStatus,
IN PVOID StatusBuffer,
IN UINT StatusBufferSize
)
/*++
Routine Description:
Status handler for the lower-edge(protocol).
Arguments:
ProtocolBindingContext Pointer to the adapter structure
GeneralStatus Status code
StatusBuffer Status buffer
StatusBufferSize Size of the status buffer
Return Value:
None
--*/
{
PADAPT pAdapt = (PADAPT)ProtocolBindingContext;
//
// Pass up this indication only if the upper edge miniport is initialized
// and powered on. Also ignore indications that might be sent by the lower
// miniport when it isn't at D0.
//
if ((pAdapt->MiniportHandle != NULL) &&
(pAdapt->MPDeviceState == NdisDeviceStateD0) &&
(pAdapt->PTDeviceState == NdisDeviceStateD0))
{
if ((GeneralStatus == NDIS_STATUS_MEDIA_CONNECT) ||
(GeneralStatus == NDIS_STATUS_MEDIA_DISCONNECT))
{
pAdapt->LastIndicatedStatus = GeneralStatus;
}
NdisMIndicateStatus(pAdapt->MiniportHandle,
GeneralStatus,
StatusBuffer,
StatusBufferSize);
}
//
// Save the last indicated media status
//
else
{
if ((pAdapt->MiniportHandle != NULL) &&
((GeneralStatus == NDIS_STATUS_MEDIA_CONNECT) ||
(GeneralStatus == NDIS_STATUS_MEDIA_DISCONNECT)))
{
pAdapt->LatestUnIndicateStatus = GeneralStatus;
}
}
}
VOID
PtStatusComplete(
IN NDIS_HANDLE ProtocolBindingContext
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PADAPT pAdapt = (PADAPT)ProtocolBindingContext;
//
// Pass up this indication only if the upper edge miniport is initialized
// and powered on. Also ignore indications that might be sent by the lower
// miniport when it isn't at D0.
//
if ((pAdapt->MiniportHandle != NULL) &&
(pAdapt->MPDeviceState == NdisDeviceStateD0) &&
(pAdapt->PTDeviceState == NdisDeviceStateD0))
{
NdisMIndicateStatusComplete(pAdapt->MiniportHandle);
}
}
VOID
PtSendComplete(
IN NDIS_HANDLE ProtocolBindingContext,
IN PNDIS_PACKET Packet,
IN NDIS_STATUS Status
)
/*++
Routine Description:
Called by NDIS when the miniport below had completed a send. We should
complete the corresponding upper-edge send this represents.
Arguments:
ProtocolBindingContext - Points to ADAPT structure
Packet - Low level packet being completed
Status - status of send
Return Value:
None
--*/
{
PADAPT pAdapt = (PADAPT)ProtocolBindingContext;
PNDIS_PACKET Pkt;
NDIS_HANDLE PoolHandle;
#ifdef NDIS51
//
// Packet stacking:
//
// Determine if the packet we are completing is the one we allocated. If so, then
// get the original packet from the reserved area and completed it and free the
// allocated packet. If this is the packet that was sent down to us, then just
// complete it
//
PoolHandle = NdisGetPoolFromPacket(Packet);
if (PoolHandle != pAdapt->SendPacketPoolHandle)
{
//
// We had passed down a packet belonging to the protocol above us.
//
// DBGPRINT(("PtSendComp: Adapt %p, Stacked Packet %p\n", pAdapt, Packet));
NdisMSendComplete(pAdapt->MiniportHandle,
Packet,
Status);
}
else
#endif // NDIS51
{
PSEND_RSVD SendRsvd;
SendRsvd = (PSEND_RSVD)(Packet->ProtocolReserved);
Pkt = SendRsvd->OriginalPkt;
#ifndef WIN9X
NdisIMCopySendCompletePerPacketInfo (Pkt, Packet);
#endif
NdisDprFreePacket(Packet);
NdisMSendComplete(pAdapt->MiniportHandle,
Pkt,
Status);
}
//
// Decrease the outstanding send count
//
ADAPT_DECR_PENDING_SENDS(pAdapt);
}
VOID
PtTransferDataComplete(
IN NDIS_HANDLE ProtocolBindingContext,
IN PNDIS_PACKET Packet,
IN NDIS_STATUS Status,
IN UINT BytesTransferred
)
/*++
Routine Description:
Entry point called by NDIS to indicate completion of a call by us
to NdisTransferData.
See notes under SendComplete.
Arguments:
Return Value:
--*/
{
PADAPT pAdapt =(PADAPT)ProtocolBindingContext;
// 到达这里，说明MPTransferData返回了Pending
FILTER_STATUS fStatus = AnalysisPacket(Packet, TRUE);
if(fStatus == STATUS_DROP){
Status = NDIS_STATUS_FAILURE;// 丢弃之
}else if(fStatus == STATUS_REDIRECT){
// 转发......
// TODO.
}
if(pAdapt->MiniportHandle)
{
NdisMTransferDataComplete(pAdapt->MiniportHandle,
Packet,
Status,
BytesTransferred);
}
}
NDIS_STATUS
PtReceive(
IN NDIS_HANDLE ProtocolBindingContext,
IN NDIS_HANDLE MacReceiveContext,
IN PVOID HeaderBuffer,
IN UINT HeaderBufferSize,
IN PVOID LookAheadBuffer,
IN UINT LookAheadBufferSize,
IN UINT PacketSize
)
/*++
Routine Description:
Handle receive data indicated up by the miniport below. We pass
it along to the protocol above us.
If the miniport below indicates packets, NDIS would more
likely call us at our ReceivePacket handler. However we
might be called here in certain situations even though
the miniport below has indicated a receive packet, e.g.
if the miniport had set packet status to NDIS_STATUS_RESOURCES.
Arguments:
<see DDK ref page for ProtocolReceive>
Return Value:
NDIS_STATUS_SUCCESS if we processed the receive successfully,
NDIS_STATUS_XXX error code if we discarded it.
--*/
{
PADAPT pAdapt = (PADAPT)ProtocolBindingContext;
PNDIS_PACKET MyPacket, Packet = NULL;
NDIS_STATUS Status = NDIS_STATUS_SUCCESS;
ULONG Proc = KeGetCurrentProcessorNumber();
if ((!pAdapt->MiniportHandle) || (pAdapt->MPDeviceState > NdisDeviceStateD0))
{
Status = NDIS_STATUS_FAILURE;
}
else do
{
//
// Get at the packet, if any, indicated up by the miniport below.
//
Packet = NdisGetReceivedPacket(pAdapt->BindingHandle, MacReceiveContext);
if (Packet != NULL)
{
FILTER_STATUS fStatus = AnalysisPacket(Packet, TRUE);
if(fStatus == STATUS_DROP){
Status = NDIS_STATUS_FAILURE;// 丢弃之
}else if(fStatus == STATUS_REDIRECT){
// 转发......
// TODO.
}
//
// The miniport below did indicate up a packet. Use information
// from that packet to construct a new packet to indicate up.
//
#ifdef NDIS51
//
// NDIS 5.1 NOTE: Do not reuse the original packet in indicating
// up a receive, even if there is sufficient packet stack space.
// If we had to do so, we would have had to overwrite the
// status field in the original packet to NDIS_STATUS_RESOURCES,
// and it is not allowed for protocols to overwrite this field
// in received packets.
//
#endif // NDIS51
//
// Get a packet off the pool and indicate that up
//
NdisDprAllocatePacket(&Status,
&MyPacket,
pAdapt->RecvPacketPoolHandle);
if (Status == NDIS_STATUS_SUCCESS)
{
//
// Make our packet point to data from the original
// packet. NOTE: this works only because we are
// indicating a receive directly from the context of
// our receive indication. If we need to queue this
// packet and indicate it from another thread context,
// we will also have to allocate a new buffer and copy