How does NDISWAN work?

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  - 1
    - binplace integration to the build utility Hello, Is there a way to integrate the binplace utility to the build utility of the ddk? For example the WPP tool is integrated and to use it you need to add the macro "RUN_WPP= $(SOURCES) -km" to the "source" file. I could not find any documentation about it in the ddk or the Internet. Nir Tag: How does NDISWAN work? Tag: 50250
  - 2
    - How to popup safe removal dialog of PNP device ? Dears Do you know if there is any function can popup safe removal dialog of PNP device ? Thanks a lot .. Tag: How does NDISWAN work? Tag: 50246
  - 3
    - DeviceIoControl return 998 hi, I try to retrieve signal strength from NDISUIO driver. the CreateFile returns OK on the name \\\\.\\{x-x-x-x}, but the DeviceIoControl retrurn 998 (no access to file). does anybody know why and how i should solve this problem. I should mention i'm working on xp and therefore the line "queryOID->ptcDeviceName = ptcDeviceName;" could not be performed, because the queryOID->ptcDeviceName exists only on WIN CE. Thanx, d Tag: How does NDISWAN work? Tag: 50245
  - 4
    - Server 2003 DDK USB Driver samples Hello, I was reading somewhere on this forum by Eliyas Yakub that Win XP DDK sample driver bulkusb had bugs wihch are fixed in Server 2003 DDK sample , is it possible to get the bulusb sample driver from Server 2003 DDK without geting the complete DDK regards Taha Tag: How does NDISWAN work? Tag: 50244
  - 5
    - 2 device interface questions Hi, i use SetupDiGetClassDevs to build a list of devices, and then i use SetupDiEnumDeviceInterfaces to enumerate device interfaces. however, if i do not specify DIGCF_DEVICEINTERFACE and use the same classguid that i use for SetupDiEnumDeviceInterfaces, the enumeration fails. aparrently if i do not specify DIGCF_DEVICEINTERFACE, i get a list of setup classes. what is the use of this if i cannot enumerate device interfaces with the resulting list? my second question is simpler: i am making an api to handle the device driver interfacing. a user needs to have something that he can pass to the api that i am making, in order to say: open a connection to that specific device. does he need to use the detailed name that is returned by SetupDiGetDeviceInterfaceDetail? or is there a simpler way to do this? kind regards, Bruno. Tag: How does NDISWAN work? Tag: 50241
  - 6
    - Microsoft Mirror Sample Driver hi all i am using Microsoft Mirror Sample Driver. all is working fine, and i am able to capture the desktop (with minor additions). however, i am experiencing a runtime side-effect. all combo-boxes in the operating system do not open normally, rather, they open only over where the mouse is. i commented out all the DrvXXX except for DrvEnablePDev DrvCompleteDev DrvDisablePDev DrvEnableSurface DrvDisableSurface DrvAssertMode (which seem to be the minimal requirement for a Mirror Display Driver). after i remove the driver and re-boot, the side-effect goes away. has anyone else ever experienced this side effect? can some one help me? assaf Tag: How does NDISWAN work? Tag: 50238
  - 7
    - good kernel forums needed hi all i am looking to join some good forums. mailing lists and the likes. any recomendations? assaf Tag: How does NDISWAN work? Tag: 50236
  - 8
    - Custom IOCTL for Audio Drivers Hello I have been trying to adapt MSVAD DDK sample so that it can handle custom IOCTLs from user mode apps. I registerd an handler for IRP_MJ_DEVICECONTROL and use PcDispatchIrp() to send down unrecognized IRPs to PortCls. since the MSVAD sample demonstrates an audio driver thats PnP aware, its not advisible to create a symbolic link for the driver such that usermode apps can open "\\.\mydriver" and send IOCTLs. I was wondering, how should one go about exposing the driver in such a way that user mode apps can send custom IOCTLs to it. TIA Tag: How does NDISWAN work? Tag: 50233
  - 9
    - how to display messages during boot time Hi, I have written a scsi miniport driver and it works well when I choose the "multi(0)disk(0)rdisk(0)partion(1)..." option defined in the boot.ini during boot time. I copied the driver into the root and renamed it as ntbootdd.sys. I added another option "scsi(0)disk(0)rdisk(0)..." in the boot.ini. When the system boots, I choose the scsi option. But the same driver ntbootdd.sys seems failed. I want to display some messages to the text mode screen in my driver like ntldr.exe does, so I could debug my driver. Does anybody know how to do that ? Thanks in advance Clin Tag: How does NDISWAN work? Tag: 50210
  - 10
    - newbie: ExAllocatePoolWithTag Hello, I'm rather new to driver development and I've got a question: In my driver I use the ExAllocatePoolWithTag function. As I'm running on DISPATCH_LEVEL, I need to specifiy NonPagedPool as a pool type. But as I'm allocating rather a big amount of memory, I'd prefer a paged pool allocation. Is there any way to do this in DISPATCH_LEVEL? Thanks to everyone Sam Tag: How does NDISWAN work? Tag: 50206
  - 11
    - MSVAD example Dear all, in the MSVAD example of DDK, Sound volume of Mic recording and MIDI recording are not adjustable in SndVol32. How to make them adjustable? Thx. David Tag: How does NDISWAN work? Tag: 50186
  - 12
    - Ndis packet user mode round-trip Suppose you have a Ndis IM over a Gigabit NIC. The IM sends all packes to user-mode then a console application will write the packes to the IM that will send them. What would be the resonable lowest degree of performance degradation one could expect from this scenario? Tag: How does NDISWAN work? Tag: 50180
  - 13
    - bug (?) in SfGetFileName in the SFilter sample, SfGetFileName will produce a string from various pieces. It gets a device name, a related file name (if any) , and then the filename and glues them together. I'm seeing that when a file from the network is being written, the device is \device\harddiskvolume2 then the related file object is '\' and then the routine appends a \ also finally the file name is \test\alpha.txt. This results in a name = \device\harddiskvolume2\\\test\alpha.txt. Can this possibly be correct? -- Gak - Finecats Tag: How does NDISWAN work? Tag: 50163
  - 14
    - IOCTL and mutex Hello I guess I am little confused and would appreciate if someone were to help me resolving this. I have written a driver for PCI based device to be meant to be used on Windows 2000 and up. The device has a few controls that the user application can get and set through IOCTL interface that I have provided in the driver. In order to serialize access to ioctls, I use Kernel Mutex as shown KeWaitForMutexObject(&pdx->ioctlMutex, Executive, KernelMode, FALSE, NULL) ; /* do stuff */ KeReleaseMutex(&pdx->ioctlMutex, FALSE) ; I could have used spinlocks but I reasoned that Mutex would work just as fine in this case because driver would not be in an arbitrary thread context while processing IOCTLs and I could spare raising the IRQL to DISPATCH. Also, I should mention that my driver installation does not put another filter driver on top of my driver. Now I am wondering if my above reasoning is indeed correct. In other words, can it ever happen that, either on XP or windows 2000, the driver receives IOCTL in an arbitrary thread context in which case I should probably switch to using spinlocks. Thanks in advance, Puneet Tag: How does NDISWAN work? Tag: 50161
  - 15
    - Restarting a print job I work for a small printer manufacturer as a software engineer developing. I'm currently modifying a USB print driver to add an error recovery capability, it should allow a job to be reprinted from the same page where an error happened. I've already implemented this feature for a parallel port driver but I'm facing some problems now that I'm trying to do the same for USB port. The problem is as follows: 1. When an error condition is detected the Language Monitor's WritePort function stops sending data to the printer but keeps reading data from the print spooler unitl it detects an end-of-page token. 2. When this happens I set the job to be restarted using the SetJob function using the command JOB_CONTROL_RESTART. 3. I can see in the print queue the job restarting and respooling. The print spooler starts sending data again to the Language Monitor. 4. This is when the error happens. The WritePort returns error 183, which is "Cannot create a file when that file already exists". So, I read some documentation and tried some option without much success. My best gess is that the print processor is not being restarted. There is two files (FP00000.SPL and FP00000.SHD) that are never deleted as the way the should when this error happens. I tried to use the ControlPrintProcessor() function to terminate the print processor manually when the job is done, but I couldn't get the correct handle. Did some one have this problem before? any suggestions? Sincerely, Fabio Milan Tag: How does NDISWAN work? Tag: 50159
  - 16
    - Device Initialization File I am trying to have my driver read a .ini file and apply the described settings to hardware. Are there any routines available, similar to GetPrivateProfileInt and GetPrivateProfileString, that are available to drivers? If not, any suggestions on how to parse individual lines? Thank you for your time. Tag: How does NDISWAN work? Tag: 50149
  - 17
    - Problem with linked list Hi again, I implemented the following double linked list stuff: typedef struct __MYSTRUCT { UINT t; [...] UINT bufferlen; //length of buffer BYTE *buffer; }MYSTRUCT; typedef struct __MYLIST{ MYSTRUCT mystr; LIST_ENTRY linkfield; }MYLIST, *PMYLIST; LIST_ENTRY DoubleHead; ------------------------------------------------------- [...] MYSTRUCT a; //filled with data /*The size of all the entries is dynamic, that's why the size of the structure is allocated again every time*/ UINT structsize = sizeof(UINT) + sizeof(UINT) + sizeof(a.buffer) + a.bufferlen; PMYLIST psElement = (PMYLIST) ExAllocatePoolWithTag(PagedPool,structsize,'HASA'); //here we CRASH!!! if(psElement == NULL) { DBGPRINT(("Allocatepool failed!")); } else { psElement->mystr = a; NdisAcquireSpinLock(&GlobalLock); if(numberofentries <= MAX_LIST_ENTRIES) //limit for #elements { InsertTailList(&DoubleHead,&psElement->linkfield); numberofentries = numberofentries + 1; } NdisReleaseSpinLock(&GlobalLock); } When I execute the code above, the computer crashes: DRIVER_CORRUPTED_EXPOOL, with an error in the marked line above. Any ideas why? Thanks Peter Tag: How does NDISWAN work? Tag: 50144
  - 18
    - FILE_DEVICE_DISK and VPB in a device filter Good people: I've a question about the toaster filter sample attaching to the disk stack. The filter calls IoCreateDevice specifying FILE_DISK_UNKNOWN on wxp since IoIsWdmVersionAvailable(1, 0x20) returns TRUE. Later in AddDeviceRoutine, the newly created device type was update with the lower's type which is FILE_DEVICE_DISK. I/O manager didn't create a VPB for the DO since it was FILE_DISK_UNKNOWN at the time it was created. Is there anything bad if the topmost device object is DEVICE_DISK but the VPB is NULL? It didn't crash on XP though. Thanks, Calvin - Calvin Guan Software Engineer ATI Technologies Inc. www.ati.com Tag: How does NDISWAN work? Tag: 50142
  - 19
    - Matching WM_DEVICECHANGE to a Device Object I would like to tie the WM_DEVICECHANGE message to a device object (DBT_DEVICEARRIVAL or DBT_DEVICEREMOVECOMPLETE). Is it possible to translate the dbcc_name received in the message to something that can be used in kernel mode to identify the device object? Or the reverse--is it possible for a WDM filter to get the dbcc_name given a device object? Just somehow need to bridge the message to the exact device. Tag: How does NDISWAN work? Tag: 50135
  - 20
    - Reading SINGLE_LIST from backwards Hi, I created a single list and started pushing elements to it by PushEntryList(). Now, how can I read through the list's elements backwards (starting at the tail)? Can anyone provide some source code? thanks a lot Peter Tag: How does NDISWAN work? Tag: 50130
  - 21
    - how to stop network search for Microsoft Kernel Components? Hi, I'm deeply appreciated if anyone can provide clues on the following: I try to install an audio device through INF file in a system with fresh Windows XP. After the driver loaded, i could see a list of unknown devices in the device manager and it turns out that it is the OS tries to load up the Microsoft Kernel Components. However, it takes extremely long time just to load up each components. I notice that if the network cable is disconected, the loading time of those components takes only few seconds. It seems to me that the OS tries to scan through the network for the latest kernel components (correct me if I guess wrongly). 1. What is the bypass this network search process? 2. Can a device coinstaller affect it in any way? Thank you so much :) Tag: How does NDISWAN work? Tag: 50129
  - 22
    - DPC latency and ISR interruption resolved Sirs, thank to you all for your help and support, I'ver finally resolved the problem. In the end it resulted to be the kernel mode debugger which was interrupting the whole work to do his stuff. I've tested the driver on a fresh installation and it ran smoothly, after installing and enabling the debugger the problem reappeared. Anyway, I would like to thank you all for the effort and the ideas. Regards, and enjoy the weekend ernie Tag: How does NDISWAN work? Tag: 50126
  - 23
    - ZwCreateFile or IoCreateFile.. What the diff ?? Hi I whant to use a driver from another driver. But whats the diffrence between Zw- or Io-Createfile ?? Any sample on using a driver from within another one ? Thomas Tag: How does NDISWAN work? Tag: 50125
  - 24
    - UPS plugin ?? Hi Im developing a UPS driver for a custom made UPS unit. Is it possible either plugin to a UPS service allready in Windows, so the current backup status etc is showen in the "UPS tab" in "Power Option" from control panel or can I write my own UPS service and plug it into the same area in control panel ? Its not vital that the information kan be seen in the Power Optiorns, but I could be nice Thomas Tag: How does NDISWAN work? Tag: 50118
  - 25
    - any simple sample code of display filter driver? Dear all, I am very new to this driver stuff. and I am looking for some tutorial on how to write a display filter driver. Are there any sample code of simple display filter driver? Please give me some pointers! thank you very much Tag: How does NDISWAN work? Tag: 50116
- Next
  - 1
    - USB 2.0 driver help Does anyone know where to get the USB 2.0 driver for Windows 98 platform? I am having difficulties to make USB thumb drive working with Windows 98 OS Tag: How does NDISWAN work? Tag: 50107
  - 2
    - "IoRegisterDeviceInterface" returnes an error Hi,All I have created a device object with IoCreateDevice whose parameters are as follows: DeviceType is FILE_DEVICE_DISK,and DeviceCharacteristics is zero. but when I try to register a device interface for the device object with IoRegisterDeviceInterface whose parameters are as follows: device_object, // the device object created &MOUNTDEV_MOUNTED_DEVICE_GUID, // the GUID published by Mount Manager NULL, // default value &interfaceName // a UNICODE_STRING ,I get an error returned by IoRegisterDeviceInterface. I have looked through the DDK Document and gotten such an answer as follow: Possibly indicates that the PhysicalDeviceObject is not a valid PDO pointer. Thus "device_object" created by IoCreateDevice is not a valid PDO pointer, but IoCreateSymbolicLink can create a symbolic link for the device object. How to register the device object into Mount Manager? I get puzzled. Any suggestion is welcome.Thank you. Steve Tag: How does NDISWAN work? Tag: 50103
  - 3
    - [Q] DIFx tools to install drivers by non-admin users Howdy! Can these new tools be used to install drivers by users with non-administrative rights? I'm guessing the answer is no. Tag: How does NDISWAN work? Tag: 50102
  - 4
    - NDIS 5.0 802.3 clone wireless cardbus driver slow to get unload call When I select remove device or disable our driver in "Device Manager" the system delays 30 seconds before calling our HALT function. I did not see any OID queries or sets so I don't think the system is being delayed by our driver. Other commercial drivers unload very quickly. Any ideas? Thanks Ron Tag: How does NDISWAN work? Tag: 50098
  - 5
    - !dma extension I have installed the checked build of the hal.dll on the target system. But performing the !dma does not show me the information about hal modules. It display no type information next to each module. Can someone help? Tariq Tag: How does NDISWAN work? Tag: 50096
  - 6
    - more on timing problems Hi everybody, I've managed to solve the problems due to the dpc's wait on queue of some post ago. Now I'm facing another strange (for me) behaviour: the device is interrupting every 1ms to signal data transfer completion, it uses a couple of buffers that fills in a ping-pong way. During my tests I moved the whole data copying process from the dpc to the ISR, and I noticed that from time to time I seem to miss an IRQ, or my isr is interrupted and the remaining processing takes place too late to be useful. Raising the IRQL to HIGH_LEVEL doesn't change the behaviour, and I have observed that simply launching some application multiplies occurency the 'loss' effect. One of the tests consists in attaching a machine to the device, the machine 'pumps' a stream of bits, and checks to see if the bits returning down the cable are the same, signalling an error if not. Copying the data from the read to the write buffer directly in the isr should solve every delay problem, but still the tester equipment detects some error, and as I said, launching some application multiplies the errors during the startup phase. It seems not to be a CPU load problem, I suspect that some higher priority interrupt is processed before/during mine; how can I determine who's interrupting with an higher priority? Has someone any ideas on how circumvent if not solve this behaviour ? Thank you. e Tag: How does NDISWAN work? Tag: 50086
  - 7
    - 1394 + WinXP SP2 Hi all! Since I have updated my machine to SP2, my firewire camera driver does not work anymore. If I initially install the driver, everything seems fine. Then I unplug the camera and replug it. Now the first write request fails with STATUS_INVALID_GENERATION Directly after this fail, the driver tries to get the current generation count but the returned generation count is exactly the same as the one which failed with "STATUS_INVALID_GENERATION" Then the driver returns from the HWInitialize routine with "STATUS_UNSUCCESSFULL". Immediately afterwards, the system crashes. Below is the output from WinDBG. This output completely puzzles me though. Has anybody an idea what is going on? Thanks, -Arne --------------------- snip ------------------------------------------- kd> !analyze -v ******************************************************************************* * * * Bugcheck Analysis * * * ******************************************************************************* DRIVER_IRQL_NOT_LESS_OR_EQUAL (d1) An attempt was made to access a pageable (or completely invalid) address at an interrupt request level (IRQL) that is too high. This is usually caused by drivers using improper addresses. If kernel debugger is available get stack backtrace. Arguments: Arg1: f8016d40, memory referenced Arg2: 00000002, IRQL Arg3: 00000000, value 0 = read operation, 1 = write operation Arg4: f8016d40, address which referenced memory Debugging Details: ------------------ READ_ADDRESS: f8016d40 Nonpaged pool CURRENT_IRQL: 2 FAULTING_IP: 1394dcam+3bd40 f8016d40 ?? ??? DEFAULT_BUCKET_ID: DRIVER_FAULT BUGCHECK_STR: 0xD1 LAST_CONTROL_TRANSFER: from fc4e15d2 to f8016d40 TRAP_FRAME: 805506e0 -- (.trap ffffffff805506e0) ErrCode = 00000000 eax=f8016d40 ebx=81ea2008 ecx=00000002 edx=81e8c002 esi=ffaee198 edi=ffa1b950 eip=f8016d40 esp=80550754 ebp=80550768 iopl=0 nv up ei ng nz na pe nc cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00010282 <Unloaded_1394dcam.sys>+0x3bd40: f8016d40 ?? ??? Resetting default scope STACK_TEXT: WARNING: Frame IP not in any known module. Following frames may be wrong. 80550750 fc4e15d2 ff931324 806ed0e0 81e5be80 <Unloaded_1394dcam.sys>+0x3bd40 80550768 fc4e2134 81ea2008 ffaee198 82360f20 1394BUS!Bus1394BusResetNotify+0x30 8055079c 8066a4f9 00000000 82360f20 02e5be80 1394BUS!Bus1394PnPEnumCompletionRoutine+0x48a 805507c0 804e42cc 00000000 82360f20 80550824 nt!IovpLocalCompletionRoutine+0xb4 805507f0 8066a9c9 81e9f8c0 82360f20 81e9f948 nt!IopfCompleteRequest+0xa2 8055085c fc4d3bfc 804d929c 81e9b0e0 00008000 nt!IovCompleteRequest+0x9a 8055087c fc4d4356 81e9b0e0 80559580 ffdff000 ohci1394!OhciHandleAsyncReqXmit+0x288 805508ac 804dc179 81e9c604 81e9b0e0 00000000 ohci1394!OhciDpc+0x258 805508d0 804dc0ed 00000000 0000000e 00000000 nt!KiRetireDpcList+0x46 FAILED_INSTRUCTION_ADDRESS: 1394dcam+3bd40 f8016d40 ?? ??? FOLLOWUP_IP: 1394dcam+3bd40 f8016d40 ?? ??? SYMBOL_STACK_INDEX: 0 FOLLOWUP_NAME: MachineOwner SYMBOL_NAME: 1394dcam+3bd40 MODULE_NAME: 1394dcam IMAGE_NAME: 1394dcam.sys DEBUG_FLR_IMAGE_TIMESTAMP: 0 STACK_COMMAND: .trap ffffffff805506e0 ; kb BUCKET_ID: 0xD1_CODE_AV_VRF_BAD_IP_1394dcam+3bd40 Followup: MachineOwner --------- Tag: How does NDISWAN work? Tag: 50069
  - 8
    - Resolving PNP_DETECTED_FATAL_ERROR (ca) Is the following code fragment ok it sometimes gives PNP_DETECTED_FATAL_ERROR (ca) bugcheck PNP_DETECTED_FATAL_ERROR (ca) PnP encountered a severe error, either as a result of a problem in a driver or a problem in PnP itself. The first argument describes the nature of the problem, the second argument is the address of the PDO. The other arguments vary depending on argument 1. Arguments: Arg1: 00000003, Invalid ID An enumerator has returned an ID which contains illegal characters or isn't properly terminated. IDs must only contain characters in the range 0x20-7F inclusive with the exception of 0x2C (comma) which is illegal. Arg2: fcb84030, PDO whose IDs were queried Arg3: e1c504c8, Address of ID buffer Arg4: 00000003, HardwareIDs WCHAR buf[MAX_SIZE]; //MAX_SIZE is 40 status = _snwprintf(buf,28,L"USB\\Vid_%04x&Pid_%04x&MI_%02x",pDeviceDescriptor->idVendor,pDeviceDescriptor->idProduct,InterfaceNum); // Copy the hardware IDs pdoDevExt->HardwareIDs = ExAllocatePool (NonPagedPool,56); if (NULL == pdoDevExt->HardwareIDs) { ........ return STATUS_INSUFFICIENT_RESOURCES; } RtlCopyMemory (pdoDevExt->HardwareIDs,buf,56); In my query function PWCHAR buffer buffer = pdoDevExt->HardwareIDs; while (*(buffer++)) { while (*(buffer++)) { ; } } length = (ULONG)(buffer - pdoDevExt->HardwareIDs) * sizeof (WCHAR); buffer = ExAllocatePoolWithTag (PagedPool,length, lTAG); if (!buffer) { status = STATUS_INSUFFICIENT_RESOURCES; break; } RtlCopyMemory (buffer, pdoDevExt->HardwareIDs, length); Irp->IoStatus.Information = (ULONG_PTR) buffer; break; Tag: How does NDISWAN work? Tag: 50067
  - 9
    - scsi miniports DriverEntry is called but on other function... Hi folks, i am writing a scsi miniport driver for a pcmcia flashcard. The drivers DriverEntry() function is called as soon as a pccard is plugged in. (Thats why i assume the driver is installed correct.) DriverEntry() return the value zero which is returned by ScsiPortInitialize(). After DriverEntry() has been called, no other function is called but the device appears with the message " This device cannot start. (Code 10) " in the device manager. So the question is: Why does'nt the system call HwFindAdapter() after the driver service has been started? Please let me know if you have any ideas. Thanks in advance, Mike Tag: How does NDISWAN work? Tag: 50063
  - 10
    - Backup Function GetTapePosition Hello everybody, i tried to get the actual position of a dlt tape by calling GetTapeParameters. I tried several parameters. Absolute, Logical, but nothing worked. I always got a unknown or uncaught exception. Is there someone with experiences of this function? The counter function SetTapPosition works fine for me, no problem at this point. Greetings, Kai PS: HowTo ask questions if I have a msdn subscription? -- -=[may the force be with you]=- Tag: How does NDISWAN work? Tag: 50057
  - 11
    - Desperately want GDIINFO, how can I obtain this structure? Dear all, I am mad about this... GDIINFO is a Windows System structure, and it is global... But I just don't know where to access it... I searched many places but cannot find how to read its field out... Any thoughts? Please help me! Thank you so much! -Lucy Tag: How does NDISWAN work? Tag: 50049
  - 12
    - Anyone know of a good tutorial style web site for Windows XP device driver development? Hi, I am new to device driver development. I have scanned the MSDN pages about writing device drivers and I am feeling a little lost. Does anyone know of any good tutorial style web sites. Perhaps when I get into looking at the DDK it will all seem much easier... Thanks Ty Tag: How does NDISWAN work? Tag: 50048
  - 13
    - error 1117 scsi I am developping a CF card utility which is control the inquiry,preformat,readid,read capacity,etc. I use IOCTL_SCSI_GET_CAPABILITIES to get capabilties.and IOCTL_SCSI_PASS_THROUGH for vendor functions. but it report error 1117 I/O error. I do not where is wrong. Thanks for any hints! Amon Tag: How does NDISWAN work? Tag: 50042
  - 14
    - WPP_DEBUG From reading the auto generated .tmh files I discovere that by doing: #define WPP_DEBUG KdPrint I can get all of my WPP tarcings sent also to the kernel debugger automatically. why isn't this feature documented ? Will it be supported in future DDK versions ? Thank you Shahar Tag: How does NDISWAN work? Tag: 50039
  - 15
    - About USB device and interface descriptors Hi, To my understading device and interface descriptors contain a usb device class type that recognizes the functions the device implements (audio, storage, printer, etc.). There are a few things I do not understand about the usb device class concept: 1) What is the purpose of the device class mentioned in the device descriptor ? The class is mentioned in the interface descriptor and a device may have many interfaces. Are there cases where the class in the device descriptor is not 0xFF or 0x00 or the same as in the interface ? 2) Say a usb mass storage device reports an interface class of 0x03 (HID), but it still reports "USB Mass Storage Device" in it's device description. Am I right in guessing that the USBSTOR.SYS will still be loaded and a file system will still be mounted regulary ? If so, what is the credebility of this parameter if windows doesn't really care what is it's value ? 3) Isn't there a networking usb device class ? The Wi-Fi USB device I just bought reports a interface class of 0xFE and subclass 0x01 which according to the documentation is an infra-red device and the infra-red device I bought reports 0xFF in the device class and 0x00 in the interface class (and 0x00 is illegal to my understanding) ? 4) From my observation the compatible ID's a PDO for a USB device sometime contain the class and sub class from the device descriptor and sometimes from the interface descriptor. What is the algorithm for this decision ? 5) To my understanding when a device implements more than one interface the PDO reports a USB\COMPOSITE compatible ID, yet the PDO for the bluetooth adapter I bought does not report this ID. how can this be ? I hope this is not too many questions in one shot... Thank you Shahar Tag: How does NDISWAN work? Tag: 50037
  - 16
    - Pulsing a Port Pin I'd like to pulse a serial or parallel port pin from within kernel mode. I want to display this on a scope, as a simple way to monitor certain events in my code. Can some suggest a simple way to do this? Thanks in Advance, Dennis Tag: How does NDISWAN work? Tag: 50032
  - 17
    - NdisOpenAdapter Hello, When I make a call to NdisOpenAdapter, I get the following NDIS_STATUS value: NdisStatus = 259 Immediately after the NdisOpenAdapter call which returns this error, my system crashes. Can anybody tell me what this value means? I found a NdisWriteErrorLogEntry function, but I'm not sure if that is what I want. I just want to know how to interprete this status code. Thanks, -- John Tag: How does NDISWAN work? Tag: 50014
  - 18
    - safely eject USB memory stick Does anyone have some sample .NET code on how to programatically 'safely remove USB mass storage device'. Any help would be greatly appreciated Thanks Tag: How does NDISWAN work? Tag: 50006
  - 19
    - Removal MO and WM_DEVICECHANGE messages. Hello, I am running Windows XP and I have a Fujitsu 2513A MO drive attached to a Adaptec 29160N controller. I am attempting to write an application that traps WM_DEVICECHANGE messages looking for DBT_DEVICEARRIVAL and DBT_DEVICEREMOVECOMPLETE messages. So far it seems to work famously for CD and DVD media, but the drivers for the MO drive do not produce the expected messages. The strange thing, however, is that AutoPlay does work for the MO drive - and so I had a question for any of you: is there some way I can leach onto the same mechanism that AutoPlay is using to detect media insertion/removal into/out of that drive? If so, what is that mechanism? And why is it apparently different from the WM_DEVICECHANGE mechanism? BTW I have tried looking for updated Windows XP device drivers for the drive, but to date I could not locate any. Thank for any help or information, Ravi Tag: How does NDISWAN work? Tag: 50005
  - 20
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Hi,
does somebody know how NDISWAN makes decisions which WAN link is best for
sent packet?
MSDN says: "In an NDIS WAN environment, NDISWAN examines the header of the
descriptor of a send packet and determines over which link the packet will be
sent", but I would like to know what item of packet descriptor header is
crucial.

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How does NDISWAN work? by steve

steve
Thu Aug 19 01:53:06 CDT 2004

I would guess NDISWAN examines the first buffer in the
packet descriptor (using NdisGetFirstBufferFromPacket())
and looks at the layer 2 header to determine its
protocol. NDISWAN could then look at the devices that
support those protocols - the miniport drivers for each
of the NICS/WAN devices tell NDIS the medium types that
they support - see the help on MiniportInitialize() for
more info.

steve

>-----Original Message-----
>Hi,
>does somebody know how NDISWAN makes decisions which WAN
link is best for
>sent packet?
>MSDN says: "In an NDIS WAN environment, NDISWAN examines
the header of the
>descriptor of a send packet and determines over which
link the packet will be
>sent", but I would like to know what item of packet
descriptor header is
>crucial.
>
>.
>

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