Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure?

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  - 1
    - About BDA node types... Hi, I wanna combine tuner, demod and capture nodes in a filter. The node types in the KSNODE_DESCRIPTOR declaration should be KSNODE_BDA_RF_TUNER, KSNODE_BDA_COFDM_DEMODULATOR(for DVB-T), and what's the capture node type should be? Thanks! Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96792
  - 2
    - Sending simple message to usb device. Hi, I am trying to do something that sounds simple but doesn't have an obvious answer with my current knowlege. I am trying to send simple messages to a usb board. What I want to do is send say the #6, just that character, to a usb board that I am working on. The device has a specific identifier (a model number) so it shouldn't be hard to find - if I knew where to start. Thanks in advance, Kristian So, if I wanted to write a program to send simple characters to this board - where do I start? Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96781
  - 3
    - XP and Vista driver development I am need of a driver developer for hire. Should be a short contract... 1 Project. Please give me rates and any interest you my have. Thanks, Anthony Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96769
  - 4
    - FOX NEWS SUED FOR FAKE NEWS The ham sandwich parody that was reported on FOX and Friends April 24th as real news (multiple times, as noted by Think Progress) has lead to a lawsuit by a school administrator affected by the subsequent harrassment. Boston.com reports: "Lewiston School Superintendent Leon Levesque is seeking $75,000 in federal court in Portland to deter what his attorney Bernard J. Kubetz characterized as irresponsible reporting by Fox News Channel. ...The lawsuit contends that Fox reported the parody as fact on its "Fox and Friends" show on April 23. The show's anchors repeated a comment attributed to Levesque, that "These children have got to learn that ham is not a toy," and that there was an effort afoot to create an "anti-ham response plan." ..."It appears to me that Fox News acted in a grossly irresponsible way and took some information that was really not very plausible, did not do any substantial fact-checking, and put it out as hard news," Kubetz said. Levesque said he was overwhelmed for days with phone calls and hate mail, including threatening calls to his home. Fox did a brief on-air retraction, but Levesque called it unsatisfactory. A Fox News spokesman in New York said the company does not comment on pending lawsuits." One can only hope that the Boulder Valley School District takes note and follows suit, for Bill O'Reilly's (a.k.a. Donald Duck) reprehensible and deliberate misrepresentation of a school assembly at Boulder High School. Bill O'Reilly (and Caplis and Silverman, who also smeared the school on their radio show) have been asked to respond to the Independence Institute's issue paper documenting the falsehoods; as far as I can tell neither has yet. If and when they do News Hounds will cheerfully let you know. http://www.boston.com/news/local/maine/articles/2007/07/02/school_official_sues_fox_over_report_parody_story_in_maine/ That's why FAUX runs these stories, to use their anonymous army of "Blackflon"'s to harass and intimidate from the shadows. But at NO COST to FAUX just the victims of their "stories" And of course, the nice culture of FOX lifers sent the usual death threats as a result of the Fox bogus news reports. On FOX. nothing of Rush,s dope bust, rest assured we will hear plenty about al gore's son.. Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96765
  - 5
    - Is there concept of large pages on Vista? Hi, Is there a concept of large pages on Vista? What is the maximum size of contiguous physical memory that is possible to allocate from an app on Vista and above? I would like to write an app that allocate a huge contiguous physical memory and fill it with data and pass it down to network driver for xmitting (for test purposes)? Is there a call available that I can use from within my app. The app is written in C. Regards, -Praveen Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96764
  - 6
    - CreateNamedPipe without Disconnect & CloseHandle i have a serious problem with CreateNamedPipe: I am developing a virtual printer driver in VISTA, for that at one point i use NamedPipe ok.. Now if my all code is run good then there is no any problem becuse at the end of printing job i disconnect this named pipe and close this handle. Now consider the case that my NamedPipe is created and without close it my printer driver crash at some point means when ever second time any print job is there it does not createNamePipe gives me error ERROR_ALREADY_EXISTS that "Cannot create a file when that file already exists". here i write my code for create named pipe hBitmapPrinterPipe = CreateNamedPipe( L"\\\\.\\Pipe\ \BitmapPrinterPipe", // pipe name PIPE_ACCESS_DUPLEX| FILE_FLAG_OVERLAPPED, PIPE_TYPE_BYTE | PIPE_WAIT, PIPE_UNLIMITED_INSTANCES, MAX_PATH, MAX_PATH, NMPWAIT_USE_DEFAULT_WAIT, NULL); if(hBitmapPrinterPipe == INVALID_HANDLE_VALUE) { GetLastError()); } Using this code i create my pipe.. so my question is there is any method from which i can reopen my existing server pipe and close it.. OR there is any solution from which i can open the another instance of the same name pipe.. so please write me which solution is best for me and how can i do it.. Thanks in advance.. Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96751
  - 7
    - Install two upper filter at the same time? I'm developing a upper filter for a ps2 mouse like device. well, there is another a ps2 mouse too and that device has already installed with a upper filter dirver for the mouclass driver and also i8042 driver. My question is that is it possible to install a upper filter ? Thanks -chueh8 Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96750
  - 8
    - NDIS60 Miniport sharing memory with user mode and WHQL Hi, I need to share memory between user mode application and the NDIS60 Miniport driver: 1. Allocate memory in user space. In driver, I use NdisAllocateMdl (which will also build MDL and lock the pages depending on the buffer is from Non Paged pool or not). Then I call MmGetSystemAddressForMdlSafe to get the driver accessible address. So will this non NDIS routine (MmGetSystemAddressForMdlSafe) be approved by WHQL if used in NDIS driver? The DDK points to use this routine instead of NdisBufferVirtualAddressSafe which is not supported in NDIS60. 2. Allocate memory in kernel space. I see that the MmGetSystemAddressForMdlSafe is a macro internally calling MmMapLockedPagesSpecifyCache function with KernelMode as AccessMode. Will WHQL approve (assuming MmGetSystemAddressForMdlSafe is approved) if I use the later routine to map memory to user space? Please let me know. Thanks, Aniketa Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96747
  - 9
    - usb camera filter driver This is a multi-part message in MIME format. ------=_NextPart_000_0043_01C7BEEE.4FAA4040 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Everybody, I write usb camera filter driver, i see toaster filter example in DDK = and make the same. but i have a problem when use mode application access = filter driver by IOCL. Following is kernel mode code is create object control NTSTATUS FilterCreateControlObject( IN PDEVICE_OBJECT DeviceObject ) { UNICODE_STRING ntDeviceName; UNICODE_STRING symbolicLinkName; PCONTROL_DEVICE_EXTENSION deviceExtension; NTSTATUS status =3D STATUS_UNSUCCESSFUL; UNICODE_STRING sddlString; //PAGED_CODE(); // // Using unsafe function so that the IRQL remains at PASSIVE_LEVEL. // IoCreateDeviceSecure & IoCreateSymbolocLink must be called at // PASSIVE_LEVEL. // ExAcquireFastMutexUnsafe(&ControlMutex); // // If this is a first instance of the device, then create a = controlobject. // and register dispatch points to handle ioctls. // if(1 =3D=3D ++InstanceCount) { DbgPrint("Start Create Object\n"); // // Initialize the unicode strings // RtlInitUnicodeString(&ntDeviceName, NTDEVICE_NAME_STRING); RtlInitUnicodeString(&symbolicLinkName, SYMBOLIC_NAME_STRING); // // Initialize a security descriptor string. Refer to SDDL docs in = theSDK // for more info. // RtlInitUnicodeString(&sddlString, L"D:P(A;;GA;;;SY)(A;;GA;;;BA)"); // // Create a named deviceobject so that applications or drivers // can directly talk to us without going through the entire stack. // This call could fail if there are not enough resources or // another deviceobject of same name exits (name collision). // Let us use the new IoCreateDeviceSecure and specify a security // descriptor (SD) that allows only System and Admin groups to access = the // control device. Let us also specify a unique guid to allow = administrators // to change the SD if he desires to do so without changing the = driver. // The SD will be stored in // HKLM\SYSTEM\CCSet\Control\Class\<GUID>\Properties\Security // An admin can overide the SD specified in the below call by = modifying // the registry. //=20 status =3D IoCreateDeviceSecure(DeviceObject->DriverObject, sizeof(CONTROL_DEVICE_EXTENSION), &ntDeviceName, FILE_DEVICE_UNKNOWN, FILE_DEVICE_SECURE_OPEN, FALSE, &sddlString,=20 (LPCGUID)&GUID_SD_FILTER_CONTROL_OBJECT, &ControlDeviceObject ); if(NT_SUCCESS(status)) { =20 ControlDeviceObject->Flags |=3D DO_BUFFERED_IO; status =3D IoCreateSymbolicLink(&symbolicLinkName, &ntDeviceName); if(!NT_SUCCESS(status)) { IoDeleteDevice(ControlDeviceObject); DebugPrint(("IoCreateSymbolicLink failed %x\n", status)); goto End; } deviceExtension =3D ControlDeviceObject->DeviceExtension; deviceExtension->Type =3D DEVICE_TYPE_CDO; deviceExtension->ControlData =3D NULL; deviceExtension->Deleted =3D FALSE; ControlDeviceObject->Flags &=3D ~DO_DEVICE_INITIALIZING; }else { DebugPrint(("IoCreateDevice failed %x\n", status)); } =20 DbgPrint("End Create Object\n"); } End: =20 ExReleaseFastMutexUnsafe(&ControlMutex); return status; } Following is user mode application to access filter driver by IOCL: HANDLE hdevice =3D CreateFile(TEXT("\\\\.\\UsbcameraFilter"), = GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL); if (hdevice =3D=3D INVALID_HANDLE_VALUE) { printf("Unable to open UsbcameraFilter device - error %d\n", = GetLastError()); return 1; } When i run debug user mode application it display error in WinDbg is: Access violation - code c0000005 (!!! second chance !!!) nt!IofCallDriver+0x24: 804ec046 8b7108 mov esi,[ecx+0x8] I don't know why, Everyone have experience about write usb camera filter = driver pls help me, thanks very alot. David, ------=_NextPart_000_0043_01C7BEEE.4FAA4040 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML 6.00.2900.2180" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY> <DIV><FONT face=3DArial size=3D2>Hi Everybody,</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>I write usb camera filter driver, i see = toaster=20 filter example in DDK and make the same. but i have a problem when use = mode=20 application access filter driver by IOCL.</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>Following is kernel mode code is = create object=20 control</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial=20 size=3D2>NTSTATUS<BR>FilterCreateControlObject(<BR>   &nbs= p;   =20 IN PDEVICE_OBJECT = DeviceObject<BR>       =20 )<BR>{<BR> UNICODE_STRING    ntDeviceName;<BR>&n= bsp;UNICODE_STRING    symbolicLinkName;<BR> PCON= TROL_DEVICE_EXTENSION deviceExtension;<BR> NTSTATUS  =    status=20 =3D=20 STATUS_UNSUCCESSFUL;<BR> UNICODE_STRING    sddlS= tring;</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2> //PAGED_CODE();</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2> //<BR> // Using unsafe = function so that=20 the IRQL remains at PASSIVE_LEVEL.<BR> // IoCreateDeviceSecure = &=20 IoCreateSymbolocLink must be called at<BR> //=20 PASSIVE_LEVEL.<BR> //<BR> ExAcquireFastMutexUnsafe(&Control= Mutex);</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2> //<BR> // If this is a first = instance of=20 the device, then create a controlobject.<BR> // and register = dispatch=20 points to handle ioctls.<BR> //<BR> if(1 =3D=3D=20 ++InstanceCount)<BR> {<BR>  DbgPrint("Start Create=20 Object\n");<BR>  //<BR>  // Initialize the unicode=20 strings<BR>  //<BR>  RtlInitUnicodeString(&ntDevi= ceName,=20 NTDEVICE_NAME_STRING);<BR>  RtlInitUnicodeString(&symbolicL= inkName,=20 SYMBOLIC_NAME_STRING);</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>  //<BR>  // = Initialize a=20 security descriptor string. Refer to SDDL docs in = theSDK<BR>  // for=20 more=20 info.<BR>  //<BR>  RtlInitUnicodeString(&sddlStri= ng,=20 L"D:P(A;;GA;;;SY)(A;;GA;;;BA)");</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>  //<BR>  // Create = a named=20 deviceobject so that applications or drivers<BR>  // can = directly talk=20 to us without going through the entire stack.<BR>  // This = call could=20 fail if there are not enough resources or<BR>  // another = deviceobject=20 of same name exits (name collision).<BR>  // Let us use the = new=20 IoCreateDeviceSecure and specify a security<BR>  // descriptor = (SD)=20 that allows only System and Admin groups to access the<BR>  // = control=20 device. Let us also specify a unique guid to allow=20 administrators<BR>  // to change the SD if he desires to do so = without=20 changing the driver.<BR>  // The SD will be stored=20 in<BR>  //=20 HKLM\SYSTEM\CCSet\Control\Class\<GUID>\Properties\Security<BR>&nbsp= ; //=20 An admin can overide the SD specified in the below call by=20 modifying<BR>  // the registry.<BR>  // = </FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>   status =3D=20 IoCreateDeviceSecure(DeviceObject->DriverObject,<BR>   =       sizeof(CONTROL_DEVICE_EXTENSION),<BR>=          &ntDeviceName,<= BR>         FILE_DEVICE_UNKN= OWN,<BR>         FILE_DEVICE= _SECURE_OPEN,<BR>         FA= LSE,<BR>         &sddlSt= ring,=20 <BR>         (LPCGUID)&G= UID_SD_FILTER_CONTROL_OBJECT,<BR>      &nbs= p;  &ControlDeviceObject<BR>     &= nbsp;   );</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial = size=3D2>   if(NT_SUCCESS(status))=20 {<BR>    <BR>    ControlDeviceObj= ect->Flags=20 |=3D DO_BUFFERED_IO;</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>    status =3D=20 IoCreateSymbolicLink(&symbolicLinkName, = &ntDeviceName);</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial = size=3D2>    if(!NT_SUCCESS(status))=20 {<BR>     IoDeleteDevice(ControlDeviceObject);<B= R>     DebugPrint(("IoCreateSymbolicLink=20 failed %x\n", status));<BR>     goto=20 End;<BR>    }</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>    deviceExtension = =3D=20 ControlDeviceObject->DeviceExtension;<BR>    devic= eExtension->Type=20 =3D = DEVICE_TYPE_CDO;<BR>    deviceExtension->ControlDa= ta =3D=20 NULL;<BR>    deviceExtension->Deleted =3D=20 FALSE;</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial=20 size=3D2>    ControlDeviceObject->Flags &=3D=20 ~DO_DEVICE_INITIALIZING;</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>   }else=20 {<BR>    DebugPrint(("IoCreateDevice failed %x\n",=20 status));<BR>   }<BR>  </FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>  DbgPrint("End Create=20 Object\n");<BR> }</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial=20 size=3D2>End:<BR> <BR> ExReleaseFastMutexUnsafe(&ControlMut= ex);<BR> return=20 status;<BR>}</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>Following is user mode application to = access filter=20 driver by IOCL:</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>HANDLE hdevice =3D = CreateFile(TEXT("</FONT><A><FONT=20 face=3DArial size=3D2>\\\\.\\UsbcameraFilter</FONT></A><FONT = face=3DArial size=3D2>"),=20 GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL);<BR> if (hdevice = =3D=3D=20 INVALID_HANDLE_VALUE)<BR> {<BR>  printf("Unable to open=20 UsbcameraFilter device - error %d\n", = GetLastError());<BR>  return=20 1;<BR> }</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>When i run debug user mode application = it display=20 error in WinDbg is:</FONT></DIV> <DIV> <P><FONT face=3DArial size=3D2>Access violation - code c0000005 (!!! = second chance=20 !!!)</FONT></P> <P><FONT face=3DArial size=3D2>nt!IofCallDriver+0x24:</FONT></P> <P><FONT face=3DArial size=3D2>804ec046 8b7108 mov = esi,[ecx+0x8]</FONT></P> <P><FONT face=3DArial size=3D2>I don't know why, Everyone = have experience about=20 write usb camera filter driver pls help me, thanks very alot.</FONT></P> <P><FONT face=3DArial size=3D2>David,</FONT></P></DIV></BODY></HTML> ------=_NextPart_000_0043_01C7BEEE.4FAA4040-- Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96743
  - 10
    - Understanding the virtual to physical address translation rule in x86 I hope this newsgroup is suitable for this question. Thanks. I am reading the article below: http://www.codeproject.com/system/soviet_kernel_hack.asp However, I found that I can not understand the conclusion below: "Under Windows NT, page directory of currently running process is mapped to the virtual address 0xC0300000. This information, combined with our knowledge of virtual-to-physical address translation, leads us to two conclusions: 1.. Under Windows NT, 0x300th entry of a page directory holds the physical address of the page directory itself. 2.. Page table, corresponding to some virtual address, is accessible as 0xC0000000+((address>>10)&0x3FF000). With such translation page table, corresponding to the address 0xC0300000, is 0xC0300000 itself. In other words, page directory is also a page table that corresponds to the virtual address of a page directory itself. " How are these 2 conclusion generated? In the undocumented Win2000 book, I see the linear address can be used to find its PTE by: (linear_address)>>12 * 4 +0xC0000000. It seems that this rule is different from the one in the article. Which one is correct? I find myself a bit confusion regarding the principle. Thanks in advanced! Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96742
  - 11
    - Ndis 'filter' driver compile problem in VISTA Hi Thanks in advance for any input! I compiled the WDK sample "ndis FILTER driver" in VISTA. compiled and linked fine. But I couldn't add addtional headers like windows.h, winreg.h etc. to the code. They are clashing with "ndis.h" and throws zillon errors! The compiler output log shows the include path is fine -> \\WinDDK \6000\inc\api\*.* Any compiler flag or env setting wrong? Any suggestions please? Thanks much again Ganesan Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96737
  - 12
    - Help - Locking Kernel Thread Can someone give me a few groups on going about locking a kernel thread to one processor? I have an Intel core 2 duo processor and need to lock a kernel thread to one of the cores. Any help / suggestions would be greatly appreciated. Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96734
  - 13
    - Mouse Driver Stack Structure Hey dri-xperts: I am really newbie in the driver world. Who is willing to tell me the structure of mouse driver in Windows, especially with mouse filter driver? Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96726
  - 14
    - Waiting in KMDF A few more questions 1. If I want to put a thread to sleep in KMDF, what mechanisms can I use? E.g., lets say EvtIoRead callback is called, yet the hardware resources to process that are not available yet. I want EvtIoRead to go to sleep until its woken up by the ISR. In Linux kernel there are wait queues that a function can sleep on until woken up. Are there similar native constructs in KMDF, or if not, can I use WDM (if they are available) or WIN32 calls? Anything besides WaitLock? (WaitLock doesn't seem do just that, as it forces the code that acquires it to execute as a critical section, AFAIK) 2. Let say the immediate availability of hardware for a DMA depends on how many scatter-gather elements are in the request and the current state of hardware due to outstanding requests. I.e., if I follow the framework, I won't know how many scatter-gather elements are in the request until I am inside EvtProgramDma callback. If at that point the resources are not available, I would need to wait for their availability. So: a) EvtProgramDma runs at DISPATCH IRQL, which means that even WaitLock cannot be executed in blocking mode. If the hardware resources are not immediately available, what should the driver do at this point? Spinning for them seems like a huge waste of processor cycles. b) Alternatively, I could postpone DmaExecute until all the resources are available and spin on that in the Io callback at passive IRQL (see quesetion 1). However, is there a way to infer how many items will be in the scatter-gather list at that point? Is (request_size/PAGE_SIZE+1) a definite upper bound? Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96724
  - 15
    - RNDIS Composite Device Hi, we have build a composite device with a RNDIS interface and a CDC ACM interface. If RNDIS uses the usb interfaces 0 and 1 evrything works fine. If I use the USB interfaces 2/3 for RNDIS I get a blue screen in usb8023.sys. The blue screen appears after the configuration descriptor was requested from the MI driver. OS: Windows XP SP2 without hot fixes. Has anybody a running solution where RNDIS works on a USB interface grater than 0/1 ? Thanks Guenter Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96715
  - 16
    - Is there any need for extra code to run WHQL tests? Hi, I am writing a miniport driver for a PCI based network adapter. My question is - do I have to write any extra code or routines in the driver so that the DTM test controller can run the network card related tests ? I see that there are some macros and constants to aid debugging. Is there any similar set of routines available to display or collect output from the run of WHQL testcases? Regards, Sreenivasulu Y Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96713
  - 17
    - Restricting access to USB devices based on session Hi, I have a server running on Windows Server 2003. I have a filter driver which filters IRP_MJ_CREATE requests. My intension is to block certain users from accessing the USB device(say, a thumb drive) based on session id. I have used SeQueryAuthenticationIdToken to get the session id in my dispatch function for IRP_MJ_CREATE in my filter driver. When I tried to access the device from the explorer (from different sessions), I expected a IRP_MJ_CREATE request so that I can block certain users. However, I observed that the session Id that I get is ALWAYS "0" in my filter driver. Is this correct? One more thing is that I didnt see a IRP_MJ_CREATE when I opened a explorer from a session to access the device. Is this how it works? How can I acheive what I want? Any comments are most welcome Thanks, Sri Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96711
  - 18
    - Changes to PTE Structures on Vista Hi, recently I had to debug something strange on Vista and as I closer examined the problem I ran this command on Vista and on XP: dt -b nt!_MMPTE What it does is showing you the definition of the kernel PTE structures. I did compare the results of both systems and to my surprise there were some changes regarding the name of the first bit within the _MMPTE_HARDWARE structure. Pre Vista this bit was called Write (Uniprocessor) or Writable (Multiprocessor) depending on the kernel being used. Somehow this bit has gotten a new name "Dirty1". Is this only a name change that has occured or does the name change reflect a change in functionality? The WinDbg help file describe this bit imho somewhat confusing: "Writeable or read-only. Only on multiprocessor computers and any computer running Windows Vista or later" I don't think the approriate description could fit into one sentence (mabye a very long sentence). On Pre-Vista OS this bit 1 depends on the kernel being used so it is either called Write or Writable (on MP systems bit 11 is called Write and actually 2 bits are being used to prevent stalls across processors during write access). On Vista it is either something completely new and undocumented (now using a single write bit and two dirty bits Dirty and Dirty1) or the functionality of Vista is basically equivalent to the behaviour of Pre-Vista MP kernels (XP,2000,...). If the latter case there should be two tables, one for MP and one for UNI. If the first is the case here, even more tables would be required (and comments). Does anyone know what happened here?? Cheers / Andreas Denter Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96697
  - 19
    - WinDbg !ALPC Command on Vista Hi, I am trying to run the !ALPC command within WinDbg on Vista and was told in another newsgroup (WinDbg) that it requires non public symbol files in order to succeed. What I am trying to do is debug an old application hanging and from what I see it is waiting for an LPC call. Afaik LPC is now emulated through ALPC. WinDbg does not support the "old" and well functioning !lpc command and tells you to use !alpc instead which is broken because the required symbols are not available to the public. How can someone debug such a problem? Could the problem be solved with another debugger (application) or should it be solved within Windows and its symbols (operating system)? Unfortunately there is not too many alternatives to WinDbg remaining on the market..... Cheers / Andreas Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96696
  - 20
    - How to replace Graphics User Mode driver on Vista system What is the detailed steps to replace user mode graphics driver on Vista without reboot etc? thanks Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96695
  - 21
    - File system monitor hi I am trying to develop a very simple file system monitor. I looked in the WDK at the sfilter sample and this is the aproach I want to go with (attach to the device and receive I/O notifications) The thing is that the sample is too big for me I have to admit, and too complex, I don't need to monitor pipe I/O or CD-ROM or other I/O just the files on the local volumes. I tried to make a separate device that attaches to \\Device\ \HarddiskVolume1 but I don't seem to get any I/O notifications. In my driver entry routine I first get the device object pointer of the target device mentioned above useing GetDeviceObjectPointer, with FILE_READ_ACCESS Then I create my own device with the same device type and characteristics as the target device. after this I set my device's flags to DO_BUFFERED_IO and direct_io Then I attach my device to the target device. After this I expect that in my read,write, mj_file_system_control dispatch routines to receive irps, because I am attached, but i don't receive them Probably I am missing something, I mean for sure I am missing something. I want if you can to point me somewhere where a similar code posted and explained. I have worked with drivers before but not with File_system drivers, and I know they are the hardest to manage. Or if someone is kind enough to give me right steps in order to get I/ O requests from an attached device driver. Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96693
  - 22
    - problem with IOCTL_TAPE_GET_POSITION I have a class for controlling a Sony digital tape player, and have successfully used various IOCTL tape commands, but I am having a problem with TAPE_GET_POSITION: CODE: { DWORD junk; DWORD err = 0; TAPE_GET_POSITION tgp; tpg.Type = TAPE_ABSOLUTE_POSITION; if (!DeviceIOControl(tapeHandle, IOCTL_TAPE_GET_POSITION, &tgp, sizeof(tgp), NULL, 0, &junk, (LPOVERLAPPED) NULL)) err = GetTapeError(); return err; } I am getting error 24, ERROR_BAD_LENGTH "The program issued a command but the length is incorrect" TAPE_GET_POSITION is defined in WinNT.h as: typedef struct _TAPE_GET_POSITION { DWORD Type; DWORD Partition; LARGE_INTEGER Offset; } TAPE_GET_POSITION, *PTAPE_GET_POSITION Any help would be appreciated. Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96690
  - 23
    - KMDF Scatter-Gather in EvtProgramDma vs Common Buffer Hi everyone I am implementing a KMDF driver for a PCIE device and following the toolkit's DMA framework. I don't see an elegant way of solving my problem. My hardware device has up to 16 DMA engines, so it is capable of initiating multiple DMA transfers in parallel. I can use that functionality to implement scatter-gather transfers or multiple transfers, but there are limitations which I don't seem to be able to overcome. 1. A length of the DMA access for this device has to be a multiple of 128. I truncate the user IO request to satisfy that requirement for the transaction as a whole. However, certain elements of SG list I receive in EvtProgramDma, do not necessarily satisfy this requirement. Is there a way to force the framework to force minimal length of SG list fragments? Setting device alignment to 127 doesn't help. Not sure if forcing user apps to do 128-byte alignment would solve this problem... 2. Alternatively, I could switch to using packet-based rather than SG-based DMAs, but framework claims to have a limit of no more than a single outstanding DMA at any given time when used in packet mode. That would not allow me to achieve good PCIE utilization at all, i.e. much lower bandwidth - doesn't work. Any way of overcoming the limitation? Why is it there in the first place? 3. Finally, I could do DMA transfers to a pre-allocated common buffer, and then copy them into the user buffer. WDF documentation doesn't really show how that plugs into the framework. I understand I could take an interrupt, schedule a work item at a lower IRQL, and in the work handler get a handle to user request memory and copy it there from the common buffer. However, would calling DMA completion routines interfere with that, e.g. overwrite the request memory or do something equally bad? Furthermore, I would effectively be doing DMA my way. Is there a WDF-suggested way of using common buffer with DMAs where the DMA results need to be copied to the user buffer? Any suggestions would be much appreciated. Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96688
  - 24
    - Device-defined index of the descriptor for a USB scanner Hello, I am writing a user-mode driver for a USB scanner, adapted from the wiascanr sample. I want to use the IO Control code IOCTL_GET_USB_DESCRIPTOR. In DeviceIoControl parameters, I need lpInBuffer, which is a pointer to the USBSCAN_GET_DESCRIPTOR structure: typedef struct _USBSCAN_GET_DESCRIPTOR { IN UCHAR DescriptorType; IN UCHAR Index; IN USHORT LanguageId; } USBSCAN_GET_DESCRIPTOR, *PUSBSCAN_GET_DESCRIPTOR; In this structure, Index "specifies the device-defined index of the descriptor that is to be retrieved." Where can I find this value? Thank you! Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96683
  - 25
    - Need information about writing kernel-mode debuggers Hi, I need information about writing kernel-mode debugger such as SoftIce. Any link, book or sample is appreciated. Thanks in advance. Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96678
- Next
  - 1
    - Ethernet and BDA Hello! I have written drivers for 1394 DVB tuner devices. The drivers support the BDA interface. Now I have got an Ethernet device connected to my Ethernet bus / Ethernet card. The objective is to implement the same solution for this device (supporting a BDA tuner and BDA receiver filter). Has anybody got some experiences or hints relating an Ethernet / BDA implementation? Would NDIS be the right way to go? Thanks in advance, Best regards, Norbert Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96673
  - 2
    - 64-bit DMA transaction for PCIe interface Dear All, I am porting AVStream driver to a TV capture addon card with PCIe interface. This PCIe card supports 64-bit DMA transaction with ScatterGather feature and it is a DMA bus master. I used IoGetDmaAdapter function to get DMA_ADAPTER structure. However, the WDK document about "DEVICE_DESCRIPTION" said that *********************************************************** If the ScatterGather member is set to TRUE and the InterfaceType member is set to PCIBus, the Dma32BitAddresses member is ignored and the device is assumed to support 32-bit DMA addresses. *********************************************************** Does it mean that I cannot use the 64-bit DMA transaction of this PCIe card? How can I enable 64-bit DMA transaction? Thanks, Edward Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96663
  - 3
    - Setting OID_802_11_ADD_KEY through WMI I used wbemtest to query the classes of the MSNDIS superclass. It looks like none of the classes support WPA or WPA2. For example, there is no class that can be used for OID_802_11_ADD_KEY or OID_802_11_ENCRYPTION_STATUS. Can WPA/WPA2 attributes be set on an underlying 802.11 miniport driver through WMI? Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96662
  - 4
    - I'm right about Drivers? If I have learned well there are 2 types of drivers generations: 1) WDM (Windows Driver Model) 2) WDF (Windows Driver Foundation) WDM is the "old" way of driver development (3790.1830 for example) and WDF the new way (6001 for example) . In WDF I have a framework that semplify sistem integration so the user can concentrate on driver functionality and not on driver integration with OS. In WDF i can have 2 types of drivers UMDF (User Mode Driver Framework) and KMDF (Kernel Mode Driver Framwork). Each one use methods, propertis and events of the framework to manage driver stack and IRP flow and not directly over objects. Is right all I have write? Best regards GM Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96656
  - 5
    - Install VHidMini.sys as 1st HID Driver Problems I'm writing a HID driver based on the VHidMini.sys source in the 11/2006 WDK. I'll use vhidmini in the examples below. If I install vhidmini and there is alerady a HID driver on the system, such as a USB mouse, the driver installs an I can use the test program to talk to it. I'm installing vhidmini on Vista Business 32 and Vista Ultimate 64. If I install vhidmini as the first ever HID driver, the install fails with a 'The system cannot find the file specified" error. I'm install using Device Manager by right clicking one of my unknown devices (using HPQ0004 in this example until our real acpi id is available in the BIOS) and selecting Update Driver Software..., then choosing Browse my computer for driver software, then choosing Let me pick from a list of device drivers on my computer, the choosing Next, then choosing Have Disk, then pointing to the directory where the driver inf and sys files are located and then choosing Next. Seems like there is a problem finding hidclass.sys. How do I change the vhidmini.inf so that the basic HID files (hidclass, hidparse...) get installed correctly? Start of inf file ********** [Version] Signature="$CHICAGO$" Class=HIDClass ClassGuid={745a17a0-74d3-11d0-b6fe-00a0c90f57da} Provider=%VENDOR% CatalogFile=vhidmini.cat LayoutFile=layout.inf DriverVer=09/21/2006,6.0.5736.1 ; ; Layout.inf (etc.) list all files shipped with the operating system so the ; source description sections are only needed if other files are needed. ; ; In order to use IHV drivers, the SourceDisksNames section must list the ; disk(s) containing the drivers and the SourceDisksFiles section must list ; which disk number each file to be copied is found on. ; Disk number 99 is used to avoid a conflict with the disk numbers defined ; in layout.inf ; ; Files used in a driver installation need to be digitally signed otherwise ; installation may fail. See documentation elsewhere in the DDK regarding ; driver signing. [SourceDisksFiles] vhidmini.sys = 99 [SourceDisksNames.x86] 99 = %DISK_NAME%,,,\i386 [SourceDisksNames.ia64] 99 = %DISK_NAME%,,,\ia64 [SourceDisksNames.amd64] 99 = %DISK_NAME%,,,\amd64 [DestinationDirs] CopyFilesSYS = 12 ; should it be 10 to take care of 98 stuff?????? CopyFilesDLL = 11 ; %SystemRoot%\system or system32 - 98 or Win2000 CopyFilesSYS_98 = 10, system32/drivers [Manufacturer] %VENDOR%=Vendor, NTx86, NTia64, NTamd64 ; For Win2K [Vendor] ;;%VHidMini% = VHidMini.Inst, {D49F883C-6486-400a-8C22-1A9EF48577E4}\HID_DEVICE %VHidMini% = VHidMini.Inst, ACPI\HPQ0004 %VHidDevice% = VHidDevice.Inst, HID\MyVirtualHidDevice ; For XP and later [Vendor.NTx86] ;;%VHidMini% = VHidMini.Inst, {D49F883C-6486-400a-8C22-1A9EF48577E4}\HID_DEVICE %VHidMini% = VHidMini.Inst, ACPI\HPQ0004 %VHidDevice% = VHidDevice.Inst, HID\MyVirtualHidDevice [Vendor.NTia64] ;;%VHidMini% = VHidMini.Inst, {D49F883C-6486-400a-8C22-1A9EF48577E4}\HID_DEVICE %VHidMini% = VHidMini.Inst, ACPI\HPQ0004 %VHidDevice% = VHidDevice.Inst, HID\MyVirtualHidDevice [Vendor.NTamd64] ;;%VHidMini% = VHidMini.Inst, {D49F883C-6486-400a-8C22-1A9EF48577E4}\HID_DEVICE %VHidMini% = VHidMini.Inst, ACPI\HPQ0004 %VHidDevice% = VHidDevice.Inst, HID\MyVirtualHidDevice [ControlFlags] ExcludeFromSelect = HID\MyVirtualHidDevice ;=============================================================== ; VHidMini (Root Enumerated Hid Device) install section ;=============================================================== [VHidMini.Inst] CopyFiles = CopyFilesSYS_98, CopyFilesDLL AddReg = VHidMini_98me.AddReg [VHidMini.Inst.NT] CopyFiles = CopyFilesSYS, CopyFilesDLL [VHidMini.Inst.NT.HW] AddReg = VHidMini_Parameters.AddReg [VHidMini.Inst.NT.Services] AddService = vhidmini,0x00000002,vhidmini_Service_Inst, [CopyFilesSYS] vhidmini.sys HidClass.sys HidParse.sys [CopyFilesSYS_98] vhidmini.sys HidClass.sys HidParse.sys [CopyFilesDLL] Hid.dll [VHidMini_Parameters.AddReg] HKR,,"ReadFromRegistry",%REG_DWORD%, 0x00000001 HKR,,"MyReportDescriptor",%REG_BINARY%, 06, 00, FF, 09, 01, A1, 01, 85, 01, 09, 01, 15, 00, 26, ff, 00, 75, 08, 95, 01, B1, 00, 09, 01, 15, 00, 26, FF, 00, 75, 08, 95, 01, B1, 00, 09, 01, 75, 08, 95, 01, 81,00, C0 [VHidMini_98me.AddReg] HKR,,DevLoader,,*ntkern HKR,,NTMPDriver,,"vhidmini.sys" [vhidmini_Service_Inst] DisplayName = %VHidMini% ServiceType = %SERVICE_KERNEL_DRIVER% StartType = %SERVICE_DEMAND_START% ErrorControl = %SERVICE_ERROR_IGNORE% ServiceBinary = %12%\vhidmini.sys ;=============================================================== ; VHidDevice (Virtual Hid Device) install section ; - Only a Null service is installed. ;=============================================================== [VHidDevice.Inst] [VHidDevice.Inst.NT] [VHidDevice.Inst.NT.Services] AddService = ,0x00000002, ; NULL Service ;================================================================ [Strings] ; *******Localizable Strings******* VENDOR = "Microsoft Corp" VHidMini = "Root Enumerated Hid Device (sample)" VHidDevice = "Virtual Hid Device (sample)" DISK_NAME = "Virtual Hid Device Sample Install Disk" ; *******Non Localizable Strings******* SERVICE_BOOT_START = 0x0 SERVICE_SYSTEM_START = 0x1 SERVICE_AUTO_START = 0x2 SERVICE_DEMAND_START = 0x3 SERVICE_DISABLED = 0x4 SERVICE_KERNEL_DRIVER = 0x1 SERVICE_ERROR_IGNORE = 0x0 SERVICE_ERROR_NORMAL = 0x1 SERVICE_ERROR_SEVERE = 0x2 SERVICE_ERROR_CRITICAL = 0x3 REG_EXPAND_SZ = 0x00020000 REG_DWORD = 0x00010001 REG_MULTI_SZ = 0x00010000 REG_BINARY = 0x00000001 REG_SZ = 0x00000000 ********** End of inf file Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96652
  - 6
    - How can I tell if a device is a Bus (or should I)? I am attempting to write a program that can scan the hardware on a PC and select the best driver to use. The catch to this is that the drivers are stored in a folder, but those drivers are "hidden", meaning the files are encrypted. What I want my program to be able to do is unencrypt certain drivers when it sees certain hardware ids. The program that I'm running into is that my scan seems to only be picking up the root devices and not devices that are on a bus. So once the bus gets installed, the devices on that bus are still not being installed. I was thinking what I needed to do was check each device to see if it's a bus, and then if it is, to then loop through those children. Here is a sample of what I'm doing. Please tell me if I'm on the right track and if I am, how do I check to see if a device is a Bus? I'm new to the driver world, so bare with me please. TIA! --- CODE --- dil=SetupDiGetClassDevs(NULL,0,0,DIGCF_ALLCLASSES| DIGCF_PRESENT); try { if(dil!=INVALID_HANDLE_VALUE) { DWORD err = 0; bool retVal = SetupDiEnumDeviceInfo(dil,cnt,&didat); if(!retVal) err = GetLastError(); while((retVal) && (err)!=ERROR_NO_MORE_ITEMS) { ULONG status, problem; if(CM_Get_DevNode_Status(&status,&problem,didat.DevInst, 0)==CR_SUCCESS) { wstrung devstr=L""; // HardwareID wstrung hwid = L""; if(SetupDiGetDeviceRegistryProperty(dil,&didat,SPDRP_HARDWAREID,0, (PBYTE)itemDesc,512,0)) { hwid+=itemDesc; } if(hwid.size() > 0) { wstrung triggeredPath; bool triggerActivated = CheckForTrigger(hwid,triggeredPath); if(triggerActivated) { triggeredPath = ShowInfFile(triggeredPath); } SetupDiBuildDriverInfoList(dil,&didat,SPDIT_COMPATDRIVER); if(EnumerateDriverList(dil,&didat, &sr)) // This works fine { if(SetupDiSelectBestCompatDrv(dil,&didat)) { SP_DRVINFO_DATA selectedDrvData; selectedDrvData.cbSize=sizeof(selectedDrvData); if(DebugMode) log(L"Getting Selected Driver..."); if(SetupDiGetSelectedDriver(dil,&didat,&selectedDrvData)) { DWORD drvdetailsize; DWORD detailBuf[2048]; SetupDiGetDriverInfoDetail(dil,&didat,&selectedDrvData,NULL, 0,&drvdetailsize); PSP_DRVINFO_DETAIL_DATA drvdtl = (PSP_DRVINFO_DETAIL_DATA)detailBuf; drvdtl->cbSize = sizeof(SP_DRVINFO_DETAIL_DATA); if(DebugMode) log(L"Getting Driver Info Detail..."); if(SetupDiGetDriverInfoDetail(dil,&didat,&selectedDrvData,drvdtl,drvdetailsize,&drvdetailsize)) { wstrung selectedDriverInfName = drvdtl- >InfFileName; toLower(selectedDriverInfName); for(int i=0;i<sr.PotentialDrivers.size();i+ +) { if(sr.PotentialDrivers[i].InfPath == selectedDriverInfName) { sr.SelectedDriver = sr.PotentialDrivers[i]; break; } } } } } } SetupDiDestroyDriverInfoList(dil,&didat,SPDIT_COMPATDRIVER); bool rebootRequired; UpdateDriverForPlugAndPlayDevices(0,sr.HardwareID.c_str(), sr.SelectedDriver.InfPath.c_str(), 0, &rebootRequired); } } cnt++; retVal = SetupDiEnumDeviceInfo(dil,cnt,&didat); } } } catch(...) { } SetupDiDestroyDeviceInfoList(dil); } Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96648
  - 7
    - KMDF port driver for IR Hi All, The WinHEC 2006 slides for "A Case Study On Designing And Implementing IR And Remote Solutions For Windows Vista Media Center Systems" refer to a CIRCLASS driver and a "3rd party CIR port driver". The presentation refers to documentation at Microsoft Connect but I was unable to find it. Anyone know where the documentation is? Also, is IR support availble for MCE 2005? I noticed an IRBUS.SYS driver in the MCE distribution. Is there documentation somewhere for writing a 3rd party driver for it? Thanks, -Stan Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96641
  - 8
    - Help! How are drivers for plug & play adapters removed? Thanks in advance for any help. Bill Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96635
  - 9
    - Cancelling a firmware download operation using Feature Out transfer mode Hi all, I am working on device drivers. Right now we are trying to do a firmware download operation. If during the download operation some error occurs, we need to stop downloading. This we need to do through the Feature Out transfer mode. I am looking for some help in this regard, as to how to execute this. Some available information is : REPORT TYPE COMMAND/DATA DIRECTION PURPOSE ENDPOINT USED Feature Out From Host to Device Receive EP0 HID response If Feature Out is to set firmware on device, how to receive response? Do we need to do a Get Feature as well. Thanks, Tamal Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96633
  - 10
    - File System Driver: Volume properties display. Hi all, I am writing a file system driver.I have already implemented dispatch routine for IRP_MJ_QUERY_VOLUME_INFORMATION in my FSD. But for a volume(formatted by my file system), Explorer reports file system type as "RAW" in "Properties". I'm able to acces the volume and do various operations comofortably with explorer but in "Properties" of the volume it shows "RAW" file system. I wrote a user-mode app to test the "file system type" on the volume using "GetVolumeInformation" function) and it gives me the correct file- system type. Things became more weired to me, when I changed the FSD start type to 1(system-start) from 3(demand-start). Explorer shows the correct file system type when FSD is system-start. I checked this with FASTFAT also......When I start the FASTFAT driver on-demand, explorer reports the file system type as "RAW" in "Properties" for a FAT32 formatted volume. Question here is- "Why does explorer reports file system type as RAW( Despite the fact that "ProcMon" tool shows that it issues IRP_MJ_QUERY_VOLUME_INFORMATION and obtains values from there) and what it has got to do with the FSD start type." thanks, Hitesh Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96622
  - 11
    - COM exe service installation on 64 bit via INF files Hello All, I have a printer minidriver that requires a COM service to be installed on 64 bit machines for it to function correctly. At present, I am installing the minidriver, (which also copies the COM service related files to their respective folders) using the wizard. Next, I register the proxy/stub dlls (there are two of them and I'd explain in a minute why so) using the regsvr32.exe <dllname> command. Next, I'd add the service using the command: <servicename.exe> /Service Uninstallation proceeds in the reverse order, viz: Unregister the service: <servicename.exe> /Unregister Unregister the proxy stub dlls: regsvr32.exe /u <dllname> and then uninstall the printer... Since I am running the service to interface with 32 bit components, I have the same proxy/stub dll built twice -- once for 32 bit and once for 64 bit platform. They need to be registered using the regsvr32.exe's in the SysWOW64 and System32 folders respectively (they are getting copied to the correct folders). My question is: Can the above steps, namely, proxy/stub dll registration and Service installation (and uninstall) be done through INF AddService, DllRegister directives? The MSDN documentation had raised much hope, but I was unable to get this to work. If it can, my next question is: How do I tell INF which regsvr32.exe to use? (A quick look on my 64 bit machines shows the one in SysWOW64 to be smaller than its System32 counterpart by about 15%.) Or, do I need to write some setup code in order to accomplish all this? If someone can enlighhten me with better alternatives I'd be highly obliged. Regards, Suman Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96621
  - 12
    - OID_GEN_XMIT_OK does not effect ? I've implemented Miniport Driver based on 'netvmini' sample ndis driver. In my send function, I'm sure that TransmitsOK variable has been incremented. But the network tap of windows jobs manager doesn't influence the above TransmitsOK variables of which value is transferred via OID_GEN_XMIT_OK query. How can I solve this problem ? Thanks in advance. Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96618
  - 13
    - "TUNER NOT FOUND" in MCE? Dear All, I am porting a AVStream driver to an video capture box (with USB) interface. I can use GraphEdit to setup filter graph (analog tuner, TV audio decoder, crossbar, capture and encoder filters) and play/stop correctly. However, I failed to use it under Microsoft Media Center (both WinXP and Vista) and I always get "TUNER NOT FOUND" error message. I have no idea about it. Can anyone give me some hints and direction? Any comment are very appreciated. Thanks, Edward Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96617
  - 14
    - filter to 127.0.0.1 (loopback address) in NDIS intermediate driver. Hi All I wanna filter(or logging) a packet to 127.0.01 address on NDIS intermediate driver. Is it possible ? or something more properties be set to catch 127.0.0.1 ? Thank you Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96616
  - 15
    - ReadFile and WriteFile (wiascanr sample) Hello, In order to communicate with a real device, we use the kernel-mode driver usbscan.sys... We have to call CreateFile and then, we can send IO Control codes with DeviceIoControl, that's ok. We can use ReadFile and WriteFile too! But I don't understand which is the "file"... Do we use always "(HANDLE)UlongToPtr(pmdtc->hFile)" ? Thank you! Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96612
  - 16
    - Is it OK to use a 32 bit machile to debug 64 bit? A virtual machine (VMWare) is running a Windows XP x64. Host for the virtual machine is a 32 bit Windows XP. WinDbg is connected through pipe. Is there any prblem with this configuration with properly configured simbol server and source code? Also is it ok when I use a serial cable to a real X64 machine with same configuration? -- Sincerely, Maruf Maniruzzaman, Software Engineer, KAZ Software Limited, Dhaka, Bangladesh. http://www.kaz.com.bd http://www.kuashaonline.com Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96610
  - 17
    - Device Driver Hello All, I am having some doubts in device driver installation part. I have created setup for installing device driver for WLAN cards. Setup is using Driver Install Frameworks from Microsoft. It uses DPInst.exe and installs the driver silently. It works fine for some cards and for some other cards, its not installing. What is the problem? Do I need to add any entry (vendor id) into the .INF file of the driver? How do I solve the above issue Any idea is welcome. Thanks Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96609
  - 18
    - Suspending a USB Port in User Mode Dear All, I have a custom USB CDC device which fully supports resume/suspend and remote wakeup. The device is using a battery and I would like to suspend it whenever it is not required. It goes to suspend mode when the windows is in standby mode, but what if I want to suspend it whenever it is needed (without the need of windows going to standby mode). Is it possible using a user mode utility (or a code snippet) ? The device is using the standard windows CDC driver (usbser.sys), which I suppose supports selective suspend. Thank you so much in advance, Hapary Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96597
  - 19
    - Mirror Driver - need advice Hi all. I wrote Mirror Display driver. It's works without blue screen and serious error, but it not really good track changes. I wrote app which using this driver and outputs areas of changes to his bitmap on form. I wrote all graphical functions then hook them and added eng, tracking to them. And I see that it's some function isn't tracking. I watch this on menus for example (I screenshoted this situation http://img96.imageshack.us/img96/2783/resultsbi2.png) Could anyone can say which graphical DRV functions are using to draw menu? Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96595
  - 20
    - What is the risk of NOT using build but Visual Studio IDE Some tools like PreFast does not work. But is there any risk of generating wrong binary if I use the header files and lib files to compile the driver with Visual Studio IDE? I tried to build the driver and it worked. The driver verifier also did not report any error. -- Sincerely, Maruf Maniruzzaman, Software Engineer, KAZ Software Limited, Dhaka, Bangladesh. http://www.kaz.com.bd http://www.kuashaonline.com Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96593
  - 21
    - Looking for sample code that for PICe interface Thank you for the link and your response. Crazy Larry Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96591
  - 22
    - MSVAD Disable/enable Hi all, I buit the DDK sample virtual audio driver MSVAD, and install it as the "Microsoft Virtual Audio Device (Simple) (WDM)", in my PC, installed Windows XP with service pack 2, there is a real physical audio card "SoundMAX Integrated Digital Audio", too. After success installing the virtual audio driver, when i disable and enable the "Microsoft Virtual Audio Device (Simple) (WDM)" during Windows Media Player plays songs, there will have no any volumes for several seconds. Anyone knows why it has no volumes during disable and enable the MSVAD driver? Thanks for any helps Linxzhang Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96589
  - 23
    - MSVAD Disable/Enable Hi all, I built the DDK sample audio driver MSVAD, and installed it as "Microsoft Virtual Audio Device (Simple) (WD)", and there is a real physical audio device "SoundMAX Integrated Digital Audio" card in my PC. Now if i disable and then enable the virtual audio device-->"Microsoft Virtual Audio Device (Simple) (WD)", during these steps, the real physical audio card will have no sounds (hear nothing from speaker) for a several seconds when i played songs through the real audio card. Anyone konws why? Thanks for any helps! Linxzhnag Tag: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? Tag: 96588
  - 24
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Is there a call similar to NdisAllocateFragmentNetBufferList() for
fragmenting NET_BUFFER structure?

The purpose is to create new netbuffers that carry portions of data in the
original NET_BUFFER, when
the NET_BUFFER data length is more than the maximumphysicalmapping I
informed OS while registering SG DMA channel.

Thanks,
-Praveen

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Re: Is there a call similar to NdisAllocateFragmentNetBufferList() for fragmenting NET_BUFFER structure? by Praveen

Praveen
Fri Jul 06 07:12:50 CDT 2007

Its my understanding that NdisAllocateFragmentNetBufferList() does not
allocate new memory for data, basically no data copy is involved,
its just creation of new NBLs, NBs, MDL chains.
Is this assumption incorrect?

Regards,

"Praveen Kumar Amritaluru" <apraveen.kumar@gmail.com> wrote in message
news:uBfhWS7vHHA.1204@TK2MSFTNGP03.phx.gbl...
> Is there a call similar to NdisAllocateFragmentNetBufferList() for
> fragmenting NET_BUFFER structure?
>
> The purpose is to create new netbuffers that carry portions of data in the
> original NET_BUFFER, when
> the NET_BUFFER data length is more than the maximumphysicalmapping I
> informed OS while registering SG DMA channel.
>
> Thanks,
> -Praveen
>

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