what API should i use for remote port/device blocker?

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  - 1
    - Poor DMA read rate I have a PCI device (32-bit/66MHz) that has a really poor DMA read rate (host to device) that is somewhat decent in one machine (59MB/s) but is really poor in another machine (4MB/s). The performance in the second machine is equivalent to directly reading memory from the host 4-bytes at a time. The DMA write rate (device to host), however, is roughly the same in both machines and close to the theoretical (262MB/s). The device acts as the master for both reads and writes. I have a limited knowledge of the details of the PCI bus. Does this look like an issue with the PCI bridges getting configured differently, resulting in the read transactions being terminated prematurely? I have access to a PCI analyzer and will be setting that up as soon as I have access to the machines again, but I was wondering if this looks like something obvious to someone more knowledgeable about the PCI bus. Also, are there any parameters that can be tweaked to improve the read DMA rate overall? I realize that this is probably highly dependent on the DMA engine on the device itself. Tag: what API should i use for remote port/device blocker? Tag: 91529
  - 2
    - Ethernet Controller LCS 8036 TX-R Driver for Wndows98 wanted Hello Windows friends, I have an old LAN card for use with DSL connection on an old PC. Does anybody know a driver for it ? the manufacturer has ceased support. thanks for any help J. Tag: what API should i use for remote port/device blocker? Tag: 91525
  - 3
    - Help!! Out of the Pot and into the Driver Fire I need some help. I have been thrown in front of a bus at work. We are having trouble fully testing our network enabled apps for their resilience to the effect of lag and dropped packets and I got tagged as the lucky developer to find a solution. As usual, we can't buy anything; but, in this case I cant find anything that would work anyway. I need to create a small app that will allow me to catch UDP/TCP packets going up and down the stack and hold them for a resizeable amount of time to "fake" lag for our app. I also need to be able to throw out packets based on some known frequency and unknown (psuedo-random). Of course, None of us here are Windows driver developers, but from the research that I've done, it looks like I will need to make a Intermediate NDIS driver and/or Filter driver. I am pretty sure I can't do this project in VS 2005, and I need the WDK....Right? Are there any other things that I will need before I install the WDK? I have been studying the MSDN literature on NDIS intermediate/filter drivers, but I am not real sure where to go next. Thanks a billion for any help. Sorry such a newb. .NETMystified Tag: what API should i use for remote port/device blocker? Tag: 91515
  - 4
    - Virtual disk problem I'm trying to port my virtual disk driver to Windows Server 2003 SP1 running on Virtual Server 2005 x64. I create symbolic link using DefineDosDevice. And I get "X:\ is not accessible. Incorrect function." every time I try to access created drive. My driver gets only IRP_MJ_CREATE. Symbolic link is correct: x: --> \Device\Mydevice. In CreateClose routine: irp.Status = STATUS_SUCCESS; irp.Information = FILE_OPENED ; IoCompleteRequest(irp, IO_NO_INCREMENT); return STATUS_SUCCESS; Seems to be OK. I'v tried to call IoCreateSymbolicLink. Same promblem. Whats wrong? Tag: what API should i use for remote port/device blocker? Tag: 91513
  - 5
    - Communication with driver Hi, I'm currently developing a user mode application that creates a rather big linked list which contains lots of structures that may contain linked lists theirselves. Now, how can I transfer this rather complex linked list into kernel mode? What's the best approach? Thanks a lot, Peter Tag: what API should i use for remote port/device blocker? Tag: 91508
  - 6
    - HP lagging in providing printer drivers for Vista my HP1012 laser printer does not work in Vista. I have posted asking for help elsewhere ... I am interested in reading opinions on why HP would be so slow in having printer driver support for printers on Vista. - the 1012 is no longer sold by HP but it is still relatively new. assuming HP is providing Vista support for the printers it sells, will it be difficult for HP to clone one of their working drivers to work with the 1012? - in general are printer drivers harder to write in Vista than XP? - has HP simply become a lame company that has little regard for its legacy customers? -Steve Tag: what API should i use for remote port/device blocker? Tag: 91507
  - 7
    - How to properly support an interface in an upper filter driver ? I am an upper filter driver and set & Enable an interface (IoRegisterDeviceInterface & IoSetDeviceInterfaceState() . Depending what stack this filter is on , the stacks below it will fail IRP_MJ_CREATE , some will succeed it. Some stacks depend on the IRP_MJ_CREATE , if filter completes with success , they are not happy. If the IRP_MJ_CREATE fails , user mode apps cannot access my interface, and value of filter. What is the proper method for supporting this ? Tag: what API should i use for remote port/device blocker? Tag: 91506
  - 8
    - How do I clean up the registry Hi, When I run ndistest, 1c_faulthandling test modifies the registry to simulate various error conditions (causing scenarios). During one of the test-runs, system crashed in 1c_faulthandling. Now I am unable to load the driver because of some tweaking done by 1c_faulthandling. Question is: How do I restore the registry/fix this problem? Regards, -Praveen Tag: what API should i use for remote port/device blocker? Tag: 91501
  - 9
    - USB Selective suspend support by Vista? Our device is a usb 1.1 low speed device with remote wake up capability. and it runs with the Vista in-box hid driver. it also passed USBCV suspend/remote wake up test, Well, after choosing maximum power saving policy in the Vista, we still can not obeserve the driver would send out the "set feature" command to enable the remote wake up function in our device. The deivce keep working on D0, and was not able to go into a power saving state. ""========= Per the ..http://msdn2.microsoft.com/en-us/library/ms793200.aspx In Microsoft Windows XP and later operating systems, the USB core stack supports a modified version of the "selective suspend" feature that is described in revision 2.0 of the Universal Serial Bus Specification. The USB selective suspend feature allows the hub driver to suspend an individual port without affecting the operation of the other ports on the hub. Selective suspension of USB devices is especially useful in portable computers, since it helps conserve battery power. Many devices, such as finger readers and other kinds of biometric scanners, only require power intermittently. Suspending such devices selectively reduces power consumption. More importantly, as long as any USB device remains powered, it will prevent the system from entering deeper sleep states, such as C3. The Windows selective suspend behavior is different for devices operating in Windows XP and Windows Vista. ""========== Once the device keep working on D0, it would prevent the CPU enter C3, it would result in the whole system consume more power.. Does anyone knows 1. The in-box HID driver in Vista support seletive suspend feature? 2. If yes, what's the requirement for arming the command to the device? Thanks. -chueh8 Tag: what API should i use for remote port/device blocker? Tag: 91495
  - 10
    - Multiple MiniportMessageInterruptDPCs on the same CPU In the following scenario, does NDIS call one MiniportMessageInterruptDPC per MSI message or just one DPC call? 1. The driver uses two MSI-X messages. 2. MiniportMessageInterrupt always sets QueueDefaultInterruptDpc to TRUE and returns TRUE. 3. The device sends one MSI message and interrupts a CPU. This causes a DPC. 4. While the last DPC is either running or is scheduled to run, the device sends a different MSI message and happens to interrupt the same CPU. Is this always going to result in another DPC because the interrupt is due to a different MSI message? Thanks... Tag: what API should i use for remote port/device blocker? Tag: 91490
  - 11
    - 1394 Debugging - So Close - Need Help I've set up my host and target machines for 1394 debugging. I have the virtual 1394 device drivers installed on the host machine and am able to connect to the target machine to begin the debug session. Right after the target's 1394 host controller loads, the debugging connection is lost. When I check the target's hardware properties, the 1394 host controller is whacked. I've read the documentation that warns to disable the target 1394 host controller before debugging with the caution "Be careful not to accidently disable the 1394 net adapter instead". The problem is, when I disable the 1394 host controller on the target, the 1394 net adapter disappears from the listing and thereby not allowing a debug connect at all. Any help would be greatly appreciated. Tag: what API should i use for remote port/device blocker? Tag: 91488
  - 12
    - Widcomm bluetooth drivers Hello all Anyone had problems with Windows Vista and getting their in built Bluetooth device by Widcomm working. Cant find drivers to work with Windows Vista, everything else has installed without many tears being spilt. Dan UK Tag: what API should i use for remote port/device blocker? Tag: 91486
  - 13
    - IOCTL_SCSI_PASS_THRU commands in limited user mode Hi, Currently I am using IOCTL_SCSI_PASS_THRU commands in admin user mode, when logged in limited user mode I am not able to send IOCTL_SCSI_PASS_THRU commands to an USB device. The reason is Create file will fail due to Generic_read/Generic_write which is not available in limited user modes, and IOCTL_SCSI_PASS_THRU needs these options in DeviceIOControl. As I am working with USB Mass Storage device using usbstor.sys mass storage driver is there a method that would send same commands through USB end points or pipes. Also I found IOCTL_USB_USER_REQUEST which has USBUSER_PASS_THRU option but I could not locate any sample codes, i guess these are not documented. What I am trying to do is to send an vendor specfic command to an USB Mass Storage deivce. Thanks, JK Tag: what API should i use for remote port/device blocker? Tag: 91485
  - 14
    - machine hanging after reboot when enabling driver verifier When enabling the driver verifier and rebooting the machine (done automatically for some tests by DTM), the machine is hanging during the reboot. I can reproduce the problem also by doing the same thing manually (without DTM). I have Windbg attached and it seems the system is hanging at the very beginning: it seems the driver under test is not loaded yet, the last messages from windbg are "kernel debugger connection established", some stuff about symbol paths and "system uptime: not available" as last message. I'm only able to break into the debugger until after a very long time (more than 10 minutes). The strange thing is that I do not see the problem on all my test machines. I'm currently using 2 machines: the one which has the problem is a single-processor machine, the other one, which is a multi-processor machine, does not have the problem. Another difference between them is that the one with the problem has both XP and Vista installed on it while the other has only Vista installed. Both are 32-bit machines. Has anybody already seen this problem before or does anybody have suggestions to debug this problem? Thanks, Jeroen Tag: what API should i use for remote port/device blocker? Tag: 91476
  - 15
    - inf update Hi, I made a USB WDM driver. I am trying to make an update on my driver. Every time I use the update driver the system crash. And I can't find anything wrong. I have to physically remove first the old driver and reboot I was wondering if there is anything in INF to specify the removal and/or the replacement and/or reboot of the system. Thanks. DC Tag: what API should i use for remote port/device blocker? Tag: 91475
  - 16
    - Tcpip.sys bug: FTP Upload. MiniportHalt isnt called untill it has returned all the outstanding sends. So, set up an FTP upload, then do a safe remove. Result, underlying USB bus driver gets the query remove and retuend INVALID_DEVICE_STATE for the Ndis miniport driver writes, but the miniport drivers Halt routine doesnt get called and the device doesnt get unloaded, hanging the PnP manager with device manager showing the device stil present. (You can tell the PnP manager is hung because an inserted USB stick isnt recognised). Via an applet and an IOCTL interface, the Ndis driver can be told to stop, whereupon it cancels all its send packets with a status of NDIS_STATUS_MEDIA_DISCONNECT. After this has hapened the miniport halt function does get called. So, from looking at the DDK: The PnP Manager issues an IRP_MN_QUERY_STOP_DEVICE request. On receiving this IRP, NDIS calls the ProtocolPnPEvent function of all protocol drivers that are bound to the adapter. In this call, NDIS specifies an event code of NetEventQueryRemoveDevice. If a protocol driver fails the NetEventQueryRemoveDevice event by returning a failure code from ProtocolPnPEvent, the PnP Manager might ignore the failure and subsequently succeed the IRP_MN_QUERY_STOP_DEVICE request (but it looks like it doesnt) ... After all protocol drivers are unbound from the NIC, NDIS calls the miniport driver's MiniportHalt function. So, it looks like tcpip.sys is failing the NetEventQueryRemoveDevice because it still has outstanding sends with the Nic driver, but the Nic driver cant complete them till its Halt function is called. Chicken...egg...chicken...egg. This is on XP SP2. I wonder if its 'fixed in Vista', like selective suspend ; ) Tag: what API should i use for remote port/device blocker? Tag: 91474
  - 17
    - Does i/o read bytes perfomance counter includes paging operations(read page bytes)? sorry for off-topic thanks and regards Tag: what API should i use for remote port/device blocker? Tag: 91471
  - 18
    - Auto deletion of files in SDHC cards Hi all, We are developing SD high capacity(4GB) card driver in WinCE.We are able to write and read the files after detection.But when we eject and insert the card later,we found the files missing in the card.If we paste some files in the card using card reader and then use the card in WinCE,we are able to view the files all the times.We miss the files only when written under WinCE.Whatshll we do?Pls help....... Thanks, Praba. Tag: what API should i use for remote port/device blocker? Tag: 91468
  - 19
    - devcon error : "the procedure entrypoint DeactivateActCtx could not be located in the kernel32.dll" devcon is giving error : "the procedure entrypoint DeactivateActCtx could not be located in the kernel32.dll" on w2k professional. could you please explain the reason and solution? thanks shoeb Tag: what API should i use for remote port/device blocker? Tag: 91467
  - 20
    - What build target to use for Windows XP 64? What build target should I use for Windows XP 64 in 3790.1830 DDK? What about WDK 6000? Tag: what API should i use for remote port/device blocker? Tag: 91451
  - 21
    - DIFx and virtual device drivers... I would like to use DIFx to install some virtual device drivers. Since these are virtual drivers I have to create the device instances manually. Is there a recommended way to do this with DIFx? DIFx appears to require a real device before it will create an instance. Is there a DIFx way to do this or should I use the SetupAPI and create the device? Robert Randall Tag: what API should i use for remote port/device blocker? Tag: 91445
  - 22
    - How user mode drivers handle client application crash? Hello, I write a user mode USB driver which serves overlapped ReadFile requests from the client application. There will be exceptions in the driver when the client application crashes(or is closed by the Task Manager). Is there any special requirment for the user mode driver to handle this situation? BTW, I'm a newbie to the driver development. I'm using Vista and WDK. Thanks! zxli Tag: what API should i use for remote port/device blocker? Tag: 91438
  - 23
    - Parallel Dispatching in KMDF drivers I have a PCI hardware with two communication channels. (A and B) Only DeviceIoControl() is used to communicate with this hardware, because there are In- and Outdata for each IRP. In NT4.0 driver I use the standard-queue for Type-A IOCTLs and a user-defined-queue for Type-B IOCTLs NTSTATUS MyDeviceControl(...) { ... switch(pIoStack->Parameters.DeviceIoControl.IoControlCode) { case IOCTL_MY_SIMPLE: // read some bits from hardware and complete IRP ... pIrp->IoStatus.Information=... pIrp->IoStatus.Status=... ntStatus=STATUS_SUCCESS; IoCompleteRequest(...) // no queue used break; case IOCTL_TYPE_A: ntStatus=STATUS_PENDING; IoMarkIrpPending(pIrp); IoStartPacket(...) // the default queue break; case IOCTL_TYPE_B: ntStatus=STATUS_PENDING; IoMarkIrpPending(pIrp); MyAlternateStartPacket(...) // my second queue break; ... } ... } -------------- Now I want to port my driver to KMDF. But I can define only one separate queue for Read, for Write and for IoControl. My Problem is, that I need two queues for IoControl like in my NT4.0 driver, because two User-Mode threads are communicating with my hardware (one thread with channel A, the other with channel B) Question 1: Is it possible in KMDF to return the IRP without using a queue (like IOCTL_MY_SIMPLE) Question 2: Can I direct my IRPs into different queues in KMDF? EvtIoDeviceControl is called for all types IOCTLs. (IOCTL_TYPE_A and for IOCTL_TYPE_B) Thanks Jacques Tag: what API should i use for remote port/device blocker? Tag: 91437
  - 24
    - Print Monitor Needs to Access Interactive Services I have a print monitor that is installed for a custom Postscript printer driver. This print monitor needs to display a screen asking the user to name a file and select some processing options during the call to LcmStartDocPort. It also invokes a COM object that display several interactive screens to process the file during the call to LcmEndDocPort. The printer driver and monitor installs and runs on OSes Win2K and up. It also installs on Vista, and it will properly interact with the user and process files as designed. However, on Vista the OS intercepts the dialog boxes and displays a dialog titled "Interactive Services Dialog Detection". The message is that "The program [my port monitor] may need information or permission to complete a task." When the user clicks OK, the dialogs are displayed. My questions: 1. How can I properly set permissions (programatically, during the installation) on the port monitor so that it can interact in the user session without the OS intercepting the dialog boxes? 2. Do these permissions need to be applied to the port monitor (a dll) or to the spooler that invokes it? Thanks, Mike Tag: what API should i use for remote port/device blocker? Tag: 91436
  - 25
    - How to support DRM in AVStream? Hi, I would like to implement support for DRM content in a AVStream based driver. The DDK only mentioned about how to declare support for a WaveCyclic or WavePCI miniport driver, and nothing about AVStream. Can anyone provide any info? Thanks KS Tag: what API should i use for remote port/device blocker? Tag: 91435
- Next
  - 1
    - How can I get certification stored in WinXPX64? Which API do I use and it makes me to get certification stored in "WinXPX64"? I tried to use CertOpenSystemStore() and CertEnumCertificatesInStore() APIs. Some certifications stored in local computer, but I sometimes get no certification. I don't know what the reason is. Whether do I need to use other APIs, not these or not? Do these APIs not work completely? Does somebody help me to solve this issue? I need you some suggesstion. Thanks. Tag: what API should i use for remote port/device blocker? Tag: 91434
  - 2
    - Strange Monitor behaviour and debug messages on win2k3 Hi there, I have a question, it seems that when I print and exaclty afterwords attempt a XcvDataPort() on the Monitor that has recieved my print data I get error 170 (requested resource is in use). On the debugger it I saw that this module gets loaded "pcl5eres.dll" and someone prints this debug information: "Entering SimpleDocumentPropertiesinside DDPS returning sizeofEntering SimpleDocumentPropertiesEntering SimpleDocumentPropertiesinside DDPS returning sizeofEntering SimpleDocumentPropertiesEntering SimpleDocumentPropertiesinside DDPS returning sizeofEntering " What is it? Does anyone what this data means and why such a think could be happening. Thanks Adam Tag: what API should i use for remote port/device blocker? Tag: 91433
  - 3
    - Printer driver problem on Vista I have developed a printer driver that runs on Vista, for some reason when I print a lot of pages (more than 1000); The OS becomes unstable, and some of OS exes become corrupted! For example (task manager)!; And some of the folder security gets changed (you canâ??t access folders that you were allowed to access). And when you restart the OS it will not restart!!! I will have to reinstall VISTA again. Any suggestions of what the problem might be will help? Tag: what API should i use for remote port/device blocker? Tag: 91432
  - 4
    - save string functions at IRQL > PASSIVE_LEVEL? I'm porting a big old driver to KMDF. I use some strcat()/strcpy()/sprintf(), often for internal diagnostic messages. They are now deprecated, and the recommended kernel mode replacement RtlStringCch*() functions are bound to PASSIVE_LEVEL. So what is your meaning about the best solution: Leave everything as it is and disable compiler warnings ? Or write my own strcpy_s()/strcat_s()/sprintf_s() ? Tag: what API should i use for remote port/device blocker? Tag: 91417
  - 5
    - DIFx: .cab files Hi! Can DIFx handle driver packages with .cab files? like this: mydriverpackage.inf mydriverpackage.cat mydriverpackage.cab (includes all driver files...) -Nick Tag: what API should i use for remote port/device blocker? Tag: 91406
  - 6
    - register 32-bit dll in 64bit driver INF Hi, I'm trying to trigger registration of a 32-bit dll during a 64-bit driver installation. The following is an extract of the relevant parts in the INF. [XX_Device.ntamd64] ... CopyFiles=...,xx32.CopyList.ntamd64 ... RegisterDlls=xx.RegisterDlls.ntamd64 [DestinationDirs] ... xx32.CopyList.ntamd64 = 16425 ; %SystemRoot%\SysWOW64 [xx32.CopyList.ntamd64] xx123.dll,,,0x0100 [xx.RegisterDlls.ntamd64] ... 16425,,xx123.dll,1 After the inf installation, my 32-bit dll (xx123.dll) gets copied correctly to the SysWOW64 directory, but it the regsvr of the 32 bit DLL was not successful. Does anyone knows how to trigger the regsvr of the 32-bit dll correctly? Thanks KS Tag: what API should i use for remote port/device blocker? Tag: 91396
  - 7
    - Does Longhorn driver work for W2K3 or Vice Versa Hi, I'm porting my driver to Longhorn, it's a boot-loaded driver supporting W2K3 32bit, W2K3 x64 and W2K3 ia64. Now we need to support Longhorn on all 3 platforms. Since for W2K3 support, I've built 6 drivers (free/checked, x86/x64/ia64). If for Longhorn, I build another 6, that'll be a lot. My questions are: 1. If I use WDK to build a driver for Longhorn in WDK Longhorn build enviroment, could that driver run in W2K3 on same platform ? 2. As a boot-loaded driver, to support Longhorn x64, it needs a embedded signature in driver file. If I do so, could this driver run in W2K3 x64 ? Tag: what API should i use for remote port/device blocker? Tag: 91390
  - 8
    - DTM: Run WDK File Signature verification Library job task What is this test "Run WDK File Signature verification Library Job task" about?? I have this task running under almost any Job for "Unclassified" category driver and it failed under 4 jobs and succeed for 2 other jobs. Tag: what API should i use for remote port/device blocker? Tag: 91388
  - 9
    - DTM client configuration - is Autologon required? I successfully installed all components of DTM. I then decided to run some tests on sound card drivers currently used by computer on which I installed DTM client (this PC is running Windows XP pro if it matters). All these drivers are signed by Microsoft, so I expected that all test should complete successfully. Was my expectation wrong? Because they all failed. Looking at the test errors I see this several times: ================================= Failed to Wait For Autologon Error Code 0 (The operation completed successfully) Resolution Waiting for autologon in session 0 failed. If you have tasks depending on that session to be present then those tasks will fail until someone logs on to the session. ====================================== Does it mean that PC where DTM client is installed should be configured for Autologon? If yes - what user name should I use? I noticed there is DTMLLUAdminUser created by DTM Client installation, but if this has to be used - what is the password for this account? Tag: what API should i use for remote port/device blocker? Tag: 91385
  - 10
    - WDK help collection registration Hi, I've installed WDK on one of my computers, and I would like to migrate the WDK documentation to another one, without installing WDK on it. How can I do that? Thanks Tag: what API should i use for remote port/device blocker? Tag: 91382
  - 11
    - VISTA Install Windows Drivers (Hardware-First Scenarios) I need to install drivers on VISTA and XP. I will provide a CD containing the drivers. As documented in the SDK and the WHDC site, I have added in my autorun.inf a new directive supported by VISTA, "hardwareid". This is my autorun.inf: [AutoRun] open=setup.exe [DeviceInstall] hardwareid= VID_413C&PID_5128, VID_413C&PID_5128&MI_00, VID_413C&PID_5128&MI_01, VID_413C&PID_5128&MI_02, VID_413C&PID_5128&MI_03, VID_413C&PID_5128&MI_04 DriverPath=\Drivers With VISTA, I am expecting the the "Found New Hardware Wizard" is stopped when I insert the CD containig the drivers, and launch my setup.exe that will preinstall the drivers (using the DIFx DPINST.exe) then give back the hand to the "Found New Hardware Wizard". But this is not the case. What is wrong with my autorun.inf. Olivier Tag: what API should i use for remote port/device blocker? Tag: 91379
  - 12
    - NDIS: ProtocolUnbindAdapter() gets called at IRQL DISPATCH_LEVEL on Vista I got a problem, where ProtocolUnbindAdapter() of my IM driver gets called at IRQL DISPATCH_LEVEL on Vista, consequently causing a bugcheck 0x7C with 0x14,0x02,0x00,0x00 parameters when calling NdisWaitEvent() to wait for NdisCloseAdapter() to complete asynchronously. I'd like to know, why this can happen (most likely it's my programming error, but still), if the documentation clearly states that ProtocolUnbindAdapter() is called at PASSIVE_LEVEL IRQL. Also, the Debugging Tools documentation must be updated probably, since it doesn't reflect 0x14 parameter in the 0x7C bugcheck documentation. Additionally, when I specifically enable "DbgPrint buffering" parameter in GFlags utility and reboot the system and it crashes with a full memory dump, WinDbg then displays nothing when issuing ! dbgprint command. The nt!kdprint* buffers are empty for some reason. Thanks. Tag: what API should i use for remote port/device blocker? Tag: 91378
  - 13
    - looking for code to detect if Windows firewall is turned on Hi, Please excuse if this is the wrong forum for my question. Does anyone have any code that detects if the Windows XP firewall is running? Hopefully this is code that I could run in VBA (Access)? Thanks, -- Jay Tag: what API should i use for remote port/device blocker? Tag: 91377
  - 14
    - help on acpi on driver...thanks. Does device driver or bus driver be able to post a power request packet in able to control the minimum CPU power level on Vista? If this answer is yes,which bus driver or device is? This setting in Vista is on advanced setting of Power options. Thanks for answering. Tag: what API should i use for remote port/device blocker? Tag: 91374
  - 15
    - KMDF inconsistent compiling: order of struct { } members differs I'm writing a KMDF-driver with an IoCtl-Interface. For each IOCTL-code I have defined a C-structure which describes the data passed between driver and the application. These structures interpret the data buffer "inBuf" and "outBuf" on both sides of DeviceIoControl(). So I have several "typedef struct { ... } " declarations. These are located in a separate header .h-file, which is included both in the driver sources and the application sources. So it is garanteed that driver and applications use the same buffer-structures. PROBLEM: I have found at least one struct {}, where the compiler changed the field order, when he compiles the driver. Example: typedef struct { DWORD result; DWORD long_value; char string_value[MAX_STRINGPARAMLEN]; } MyRecord ; When I compile the APPLICATION and declare a variable "mybuffer" MyRecord mybuffer ; then the fields have physically those offsets: mybuffer byte 0..3: member ".result" mybuffer byte 4..7: member ".long_value" mybuffer byte 8..11: member ".string_value" = pointer to character-array = address of mybuffer byte 12 mybuffer byte 12 ... space for string This is as it should be: struct fields are allocate in the order they were defined. BUT when I compile the DRIVER, then there are those offsets: MyRecord mybuffer ; mybuffer byte 0..3: member ".result" mybuffer byte 4..7: member ".string_value" = pointer to character-array = address of mybuffer byte 12 mybuffer byte 8..11: member ".long_value" mybuffer byte 12 ... space for string So the order of members is NOT like defined, the members ".long_value" and ".string_value" were exchanged! The consequences are of course catastrophic, since the driver interprets the integer "long_value" as pointer to the character array "string_value" => end of live as we know it. Thanks for reading so far, I hope the problem is clear now. I searched a lot, but found no #pragma settings which could influence the ordering of struct-members. Only struct-aligning can be modified, but this is not my problem. Some more facts: - I use WinDDK 6000 - driver and application are compiled within the same run of the BUILD-utility - its a checked build for x86 and WinXP platform. - build environment is also an x86 machine with WinXP. Tag: what API should i use for remote port/device blocker? Tag: 91373
  - 16
    - USB HID Lower Filter Driver issue under VISTA Hi, I have a problem under MS VISTA with a USB HID filter driver (I developped) attached as low filter on the USB common class generic parent driver (usbccgp.sys) for a USB keyboard device with extra keys. The goal of my filter driver is to change the behaviour or inibit some extra keys of the keyboard. The principle of the filter is the following: it change the HID codes output for the requested keys using a remapping table set in the registry (bytes of code to replace/ bytes of replacing code) and comparing incoming codes and replacing if codes are matching the ones for the keys. Inside the filter driver, the codes are catched thru IRP_MJ_INTERNAL_DEVICE_CONTROL IRP, then IOCTL_INTERNAL_USB_SUBMIT_URB control code, then URB_FUNCTION_BULK_OR_INTERRUPT_TRANSFER function. This filter driver works fine under Windows XP all version. But, now, under vista the filter is installing and running (i can see this thru debug outputs), but it doesn't filter anything: it doesn't catch anymore the function URB_FUNCTION_BULK_OR_INTERRUPT_TRANSFER even if i can see this URB with a sniffer (WDMSniffer). I am not a specialist in driver development and i don't understand what could have changed under Windows Vista comparing to Windows XP ? Does somebody has an idea? Thanks Christian Tag: what API should i use for remote port/device blocker? Tag: 91372
  - 17
    - USBOHCI.sys bug. Is it back on Vista? 818e9b90 87b36000 badb0d00 00000000 818e9bec nt!KiTrap0E+0x2ac 818e9c08 883176b4 89ba9144 82f9a1bc 00000004 usbohci! OHCI_SetEndpointState+0x2e 818e9c24 883115fa 89ba8002 82f9a008 00000004 USBPORT! MPf_SetEndpointState+0x45 818e9c50 88317332 36316573 00000007 0000000d USBPORT! USBPORT_iSetGlobalEndpointStateTx+0xb91 818e9c70 8833048f 89ba8028 82f9a008 0000000d USBPORT! USBPORT_iSetGlobalEndpointState+0x18 818e9c84 88330364 89ba8028 82f9a008 00000000 USBPORT! USBPORT_Core_iNukeEndpoint+0x19 818e9cb8 88330520 89ba8028 88330476 818ec820 USBPORT! USBPORT_Core_WalkEndpointList+0x139 818e9cd8 88328fba 89ba8028 818e9d40 818e9d50 USBPORT! USBPORT_Core_NukeAllEndpoints+0x88 818e9ce8 8186b17e 89ba8e5c 89ba8028 82e1a220 USBPORT! USBPORT_SurpriseRemoveDpc+0x1f 818e9d50 81837abe 00000000 0000000e 00000000 nt!KiRetireDpcList+0x147 818e9d54 00000000 0000000e 00000000 00000000 nt!KiIdleLoop+0x46 We got this bug a lot on 2K surprise removing a PCCard with an OHCI controler on it. Looks like its back on Vista, we are seeing it more frequently. Microsoft guys. any comments? (If you make a statement saying dont surprise remove these cards, that is good enough, we need to convince the customers) Tag: what API should i use for remote port/device blocker? Tag: 91368
  - 18
    - Legacy driver class for "Unclassified Signature" program What class should I use for legacy non-pnp software-only driver? According to "Unclassified Signature" requirements, driver must be installed through an INF-file. I tried to use "LegacyDriver" and "Unknown" classes, but chkinf tool reports that these classes are for system use only. Is there the only way is to define own class and write class coinstaller? Thanks for assistance. Tag: what API should i use for remote port/device blocker? Tag: 91365
  - 19
    - How to remove default Layer 2 multicast addresses in miniport driv Hello, Upon examining the netvmini sample using OID scope, I found that there are default layer 2 multicast addresses, usually: 01:00:5e:00:00:01 01:00:5e:7f:ff:fa 01:80:c2:00:00:03 After further research, I found that the first two are used for IP multicasting, while the third is used for IEEE 802.1x port authentication. How can I remove these default addresses from the miniport multicast address list? Is it even advisable to do this? Tag: what API should i use for remote port/device blocker? Tag: 91363
  - 20
    - DDK info Hi I'm completely new in windows. Please, somebody could you tell me where is possible to download DDK user manuals in pdf format? Thanks. Tag: what API should i use for remote port/device blocker? Tag: 91360
  - 21
    - Devcon sample generating errors... hi... I am trying to compile the devcon source(taken from 2003 DDK) with win2000 DDK checked build.I am getting the errors as follows... d:\ntddk\inc\commctrl.h(28) : error C2146: syntax error : missing ';' before identifier 'HRESULT' d:\ntddk\inc\commctrl.h(28) : fatal error C1004: unexpected end of file found d:\ntddk\inc\commctrl.h(28) : error C2146: syntax error : missing ';' before identifier 'HRESULT' d:\ntddk\inc\commctrl.h(28) : fatal error C1004: unexpected end of file found d:\ntddk\inc\commctrl.h(28) : error C2146: syntax error : missing ';' before identifier 'HRESULT' d:\ntddk\inc\commctrl.h(28) : fatal error C1004: unexpected end of file found Any ideas as to why this is happening? Thanks Regards S Tag: what API should i use for remote port/device blocker? Tag: 91354
  - 22
    - High level intermediary driver Hello, Are there any existing driver apps that could "bridge" to audio devices such that audio stream data can be fed to two devices (or more) at the same time? Particularly devices of different colors (hi def audio device and stereo output device or S/PDIF device) When accessed by an application to output audio data, it would appear as an audio device and then redirect and feed the data to multiple audio hardware devices... Thanks, Chris Tag: what API should i use for remote port/device blocker? Tag: 91351
  - 23
    - SetupDiXXX functtions Hi all... I am trying to use the SetupDiXXX functions from a WDM driver.I am including the setupapi.h file.After that I include the ntddk.h file (for other declarations used in this driver program).When I am building the driver...I get errors related to various definition and declarations of all the three files included. Is there any clash occuring in those definitions...and how do I solve it... Thanks Regards DC -- Tag: what API should i use for remote port/device blocker? Tag: 91349
  - 24
    - Looks like contents msdn server moved to msnd2 server. Few links I had pointing to pages on msdn.microsoft.com seem notto be working now. It seems to have moved to msdn2.microsoft.com. This is for others information who might be facing similar problem. Not sure why this happened and whether this happens regularly.. Tag: what API should i use for remote port/device blocker? Tag: 91347
  - 25
    - IOCTL using for notification Hello. I'm trying communication a driver and an application program. So I'm referring to IOCTL. But I think that is very difficult. I want any sample... Could you give any link for samples of PENDING-IOCTL-MEHOD (driver and application program) Please... Tag: what API should i use for remote port/device blocker? Tag: 91346

hi, i am developing a remote port/device blocker. i am planning to use
SetupAPI for blocking devices. will it be the best way or are there any
better APIs for this purpose? thanks

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