Aborting Irps for USB Endpoint 0

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  - 1
    - SL_PENDING_RETURNED and IoMarkPending Hi (if walter is there:)), I was going through walter's Book in the section "Why Completion Routines Call IoMarkIrpPending" it reads - >>> But notice that the driver that called IoMarkIrpPending only managed to set SL_PENDING_RETURNED in its own stack location. The drivers above it actually returned STATUS_PENDING, but they didn't call IoMarkIrpPending on their own behalf because they didn't know they'd end up returning STATUS_PENDING as proxies for the guy at the bottom of the stack. Sorting this out is where the boilerplate code in the completion routine comes in, as follows. As IoCompleteRequest walks up the I/O stack, it pauses at each level to set the IRP's PendingReturned flag to the value of the current stack's SL_PENDING_RETURNED flag. If there's no completion routine at this level, it then sets the next higher stack's SL_PENDING_RETURNED if PendingReturned is set and repeats its loop. It doesn't change SL_PENDING_RETURNED if PendingReturned is clear. In this way, SL_PENDING_RETURNED gets propagated from the bottom to the top of the stack, and the IRP's PendingReturned flag ends up TRUE if any of the drivers ever called IoMarkIrpPending. >>> if i understand it correctly if SL_PENDING_RETURNED set means that STATUS_PENDING was returned by one of the driver, and then it helps IO manager in deciding that an APC is needed or not during completion. What if in a 3 driver stack driver no 2 marks IRP pending ? in that case the the top driver dispatch routines returns STATUS_PENDING and in IO Completion propogates SL_PENDING_RETURNED it using boiler plate if (Irp->PendingReturned) IoMarkIrpPending(Irp); does that also mean that an APC will not be scheduled for that thread ? I belive if the the Top level Stack location has Pending Set then the APC will be skipped and if not then it will scheduled. if there is no APC scheduled then by which means the buffers will be copied to the user space ? Could anybody shed some light ? Regards Subodh Tag: Aborting Irps for USB Endpoint 0 Tag: 56107
  - 2
    - NdisOpenFile( ) gives blue screen Thanks a lot for quick responses. Firstly i am tracking some (specific) packets and bound to open file after exchange of those (specific) packets. In short, for me it is useless to open file in MiniportInitialize( ) so where else can i try NdisOpenFile( ) with IRQL=PASSIVE_LEVEL ? For me the ideal place was MPSend( ) where i was tracking packets but that place has IRQL=DISPATCH_LEVEL (as I have come to know). Secondly i am trying "KeGetCurrentIrql()" even ntddk.h (or wdm.h) is included. But my compiler is giving error "C4013, KeGetCurrentIrql undefined" Recommedation required With Thanks Umer Tag: Aborting Irps for USB Endpoint 0 Tag: 56105
  - 3
    - (Re: )IM protocol driver performance and optimization [[Unable to retrieve message 84bdcc66.0412030325.70125378@posting.google.com]] Thanks for your responses. It seems I have to be more specific as to what I want, or why I thought an IM driver would be appropriate. We (mis-)use NDISUIO/NDISPROT just as the interface from the miniport to the user level which works well. However, it seems to me that adding any "real" protocol in there would make things messy and hard to maintain, since I would be mixing two things, a protocol (manipulating contents) and a 1:1 packet to IRP packer (struggling with OS issues). So I thought I needed something to go between the miniport and the "protocol", i.e. the user level interface, and the thing that seemed to fit like a glove was an IM protocol driver. In there I thought I could strip the 14 byte Ethernet header and the proprietary protocol headers and trailers by just manipulating the MDL start address and length and get away without any memcopies. (I know it is not nice to assume that an NdisPacket will always consist of N NdisBuffers which are just MDLs. I was also hoping that I could somehow ensure that N=1. We work in a fairly special purpose market, so the number of different Miniports we have to support are fairly limited and stable.) That way I could also modularly switch between different proprietary protocols without having to duplicate the UIO part every time which is fixed for any NIC and any protocol. If IM protocol drivers are inappropriate for what I want, is there another way to achieve these goals in XP? Can I put a second protocol driver in the chain instead? Is there a sample for that? Is that efficient, or do I have to work with IRPs and the I/O manager? How is IP and TCP implemented in Windows? I hope they do not use IRPs as the mechanism? I would assume that IP and TCP are separate, since UDP and ARP work over IP without TCP, but then I only see one "entity" to "tick" in the network properties dialog. I guess I was hoping for something like STREAMS in System V, but enough rambling. What we want to achieve? Get the data from the hardware into a contiguous user level memory area FAST, removing the headers and trailers of Ethernet and error detection/correction protocol on the fly, sometimes rather infrequently the packet content needs to be modified (on error correction). The normal case needs to be efficient, the rare case not (obviously). At the same time the whole thing should be easily maintainable and open to changes in the protocol or even changes in the implementation of the same protocol, e.g. modular etc. Thanks again for any help. PS. Yes, I have tried to share memory between kernel and user, but I still have to transfer the packet content from the NDIS data structures to the shared memory and then copy again to remove the headers and trailers. Tag: Aborting Irps for USB Endpoint 0 Tag: 56103
  - 4
    - Launching Application from USB composite Device on Plugin. Hi, Please suggest, if there is a way to launch an application from USB device based on event. (example -Plug in). Application resides in USB device memory. I have flexibility to make the device as HID/Mass storage/CD. I prefer it to be a HID device, to use with 98-XP. Thanks, ArulVraj Tag: Aborting Irps for USB Endpoint 0 Tag: 56102
  - 5
    - Having MSDN Subcription, but how to get supports from Microsoft? Hi everyone, My company has bought a MSDN Subcription from Microsoft, I know that with it we can get some supports from Microsoft but I dont know whom should I contact to? What I would like to ask Microsoft is: My company developed a Remote Tv Tuner that produces MPEG-2 PS and we now have our TVPlayer that can view the TV well. But we now want to develop a kind of TV Tuner driver compatible with MCE so that the MCE can recognize our TV Tuner and play. But we dont know how to begin because all the documentation from Microsoft is for real TV hardware Tuners plugging at the PCI but we dont have any real hardware but MPEG-2 PS from the remote Tv Tuner. Someone from Microsoft could support me the technical information about this? Any information will be very helpful, Thanks, Truong Duc Do, Tag: Aborting Irps for USB Endpoint 0 Tag: 56100
  - 6
    - Automating Driver Installation in Windows 98 Is there any way to automate the device driver installation process in Windows 98 instead of "add new hardware" Tag: Aborting Irps for USB Endpoint 0 Tag: 56094
  - 7
    - IOCTL_STORAGE_RESET_BUS doesn't clear SCSI Reservations. Hi, I am trying to use IOCTL_STORAGE_RESET_BUS. I have a set up where two Windows Machines are sharing a library over SAN (using Brocade silkworm 2400 switch). One of the machines is windows 2003 server and other is windows 2000 server. IOCTL_STORAGE_RESET_BUS actually works on W2K3 machine (HBA is Emulex LightPulse 9000) and it clears all Previous SCSI Reservations (done using SCSI command 0x16) on the drives in the library and I could see Event in Windows Event Viewer saying that SCSI bus has been reset on request. I could then reserve the same drive from another machine. Problem is that IOCTL_STORAGE_RESET_BUS on W2K machine returns success but (this one is Q-Logic QLA2340 HBA) it doesnâ??t clear previous reservations made on drives. I see event in windows event viewer after that saying that â??The device, \Device\Scsi\xxxxxxx, did not respond within the timeout period.â?? I enabled options to allow Target Device Reset from QLogic Bios Configuration Utility-Advanced Adapter Options but that didnâ??t help. On w2k3 system, I tried it with both Scsiport-Miniport and Storport-miniport drivers and it worked and clears reservations. But on w2k system it doesnâ??t clear the SCSI reservation. Anyone has any Idea why this might be happening? Any help on this will be really appreciated. Thanks and Regards. Hetal. Tag: Aborting Irps for USB Endpoint 0 Tag: 56090
  - 8
    - Launching A User Process From Printer UI Plugin I need to launch a process from the OEMUI plugin to process some data from my virtual printer driver. The problem is it always launches as the user SYSTEM. I was under the impression from previous posts that the UI always ran at the user level. I don't want the process running as SYSTEM for securtiy reasons. How can I get the process to run as the current user viewing the desktop? I've noticed that the spawned process does not always show up on the visible desktop when a "Switch User" is performed. I've tried launching from both the port monitor and the UI plugin but it always comes up as SYSTEM and not always in the visible desktop. The Adobe PDF virtual print driver and the Microsoft Office Document Image Writer both launch programs to process data and they both do it as the correct user so I know it can be done but I can't find the correct calls to make it work. Any help is appreciated. Thank you, Bob Herzberg Tag: Aborting Irps for USB Endpoint 0 Tag: 56089
  - 9
    - EngTextOut has different output for Print To File Hello, I've found an odd situation and I can't figure out where to look. I have a monolithic usermode print driver. It typically punts TextOut calls right back to GDI's EngTextOut without changing any of the arguments. The odd behavior is this: An application makes 4 calls to TextOut a.) Regular font weight, right-side up b.) Bold, right-side up c.) Regular, sideways d.) Bold, sideways The right-side up text looks fine, but the sideways text looks different. The characters are wider, the bold characters are heavier, and the regular characters appear slightly stretched (most visible on numerals with loops, like 5 and 8). By sideways I mean rotated 90 degrees. It's the same characters in every instance, same font. If I print to a file, everything looks correct, however. -- Matt Kane mkane@zebra.orange.com minus fruit Tag: Aborting Irps for USB Endpoint 0 Tag: 56087
  - 10
    - BSOD shuts down the Harddisk Hi there, i'm looking for a possibility to prevent Windows from shutting down the Harddisk at BSODs. After digging around in the MSDN my nearest findings were at the IRP functions, especially IRP_MJ_POWER I *think* Windows sends a IRP or something else to the Device Driver at it shut down the Drive. But this seems to be depending on the Device Driver itself, because only the Boot-Disk with Standard IDE is shut down, not the other Disk on my RAID-Controller. Perhaps the RAID-Controller ignores the Command ? Any Idea ? Greeting, Thomas Tag: Aborting Irps for USB Endpoint 0 Tag: 56085
  - 11
    - UpdateDriverForPlugAndPlayDevices for 95/98 I see that the function UpdateDriverForPlugAndPlayDevices is only supported in ME+ and NT4+. What is the sister function if you will for 95 and 98? Thanks! JW Tag: Aborting Irps for USB Endpoint 0 Tag: 56078
  - 12
    - File system emulation We are designing a special-purpose embedded recorder. The storage media is removable and will be connected to a PC via an IDE or SCSI interface (note - several such media can be connected to the PC at the same time). The recorder implements a proprietary file system, which is totally unlike the standard MS file systems (i.e. FAT32, NTFS, etc.). There are many good reasons for that and it is not going to change. The "directory" structure of our proprietary file system is fixed (it contains 2 levels of directories and at most 100 files total). Individual files can be quite large - may exceed 4 GB. We are capable to access our media (performing raw sector read/write accesses) - no problems there. We need to provide to the user the ability to perform standard file operations on our media, using standard Windows utilities (e.g. Windows Explorer). This is important from a marketing perspective. Ideally, we would like the removable media to behave something like an M-Systems Disk On Key (i.e. once the media is inserted, the user will see a new drive and should be able to invoke Explorer operations on it). We understood that this may be difficult to accomplish. Instead, we were advised (in the course of a Microsoft seminar) to perform the following: a) Once sensed that the media is inserted, our software automatically creates a directory (on a normal hard disk). It reads the contents of our media and creates small dummy files in the created directory that "mirror" the files on our media. This directory is removed by our software upon sensing that our media is removed from the PC. b) We install a filter driver beneath the file system (between partmgr.sys and disk.sys). Then, when a user-invoked application (e.g. Windows Explorer) performs some action on one of the dummy files, our driver intercepts the IRP (MJ_READ), performs the operation vis-a-vis our media and completes the IRP vis-a-vis the I/O manager. As far as the user is concerned, it seems as if the operation was performed vis-a-vis the actual file on the media rather than vis-a-vis the dummy file. 1. We tried doing that and found out that instead of logical file offsets, our driver receives physical disk offsets, which is not actually surprising, but it is not good for us - obviously we need to know the logical file offset which the user-invoked application tries to access. 2. Also, we found that it is necessary to make the dummy file as large as the actual file on the media in order to achieve usable results. We achieved this by using SetFilePointer on the dummy file. On a FAT32 disk that takes a significant amount of time for a large (multi-gigabyte) file. On NTFS that does not take time, however when subsequently trying to access the dummy file via Explorer, nothing happened (no requests were received by our driver). Even if ignoring the question of the time it takes to perform SetFilePointer, this approach also requires user's PC to have a large amount of spare storage on his disk, which is problematic from marketing point of view. Also, on FAT32, we were not able to create a file larger than 4 GB, which is not good enough for our application. Can you suggest anything? Thank you for your help. Beni Falk Tag: Aborting Irps for USB Endpoint 0 Tag: 56075
  - 13
    - how to force non-debugging compilation (Win2000 DDK) I am compiling a .dll driver in Free-Build environment. When inspecting the .dll with Dependency Walker, it tells me "Debug - Yes". What should I do to turn this to No ? I am using Win2000 DDK, compiling the driver with "build -cZ" command. Cristi Tag: Aborting Irps for USB Endpoint 0 Tag: 56074
  - 14
    - NdisOpenFile( ) gives blue screen hi.... Thanks a lot for your quick responses I am explaining a little more about my Ndis driver. I have used "passthru" sample of DDK. In passthru there is a file miniport.c In miniport.c there is a function MPSend( ). In this function i call my function named CopySendPacket( ) which is using NdisOpenFile( ). When this function is called BSOD appears. Using stack command, SoftIce displays following (hope this may help) 8053B438 80574AC1 ntoskrnl!ExInterLockedAddLargeStatistic 8053B480 80578F0D ntoskrnl!IoCreateFile+0036 8053B4C0 804D4E91 ntoskrnl!IoCreateFile+002E 8053B4F4 00000000 ntoskrnl!KeInitializeInterrupt+0A7C Tag: Aborting Irps for USB Endpoint 0 Tag: 56072
  - 15
    - Creating a storage driver with multiple bearers for connection. Hi, I am trying to make a storage driver that connects to the device using multiple bearers like USB, Bluetooth or InfraRed. What i mean by this is the storage driver should be loaded by windows when the device comes in contact with the PC by any of the above mentioned means. For this, the model I have thought of uses a two layered approach wherein the first layer handles all the storage functionality and the second layer handles all the connection functionality. Using this model, I can have the first layer common, and vary the second layer for the three means of communication. The problem is that I cannot understand the way in which i can do this (separating the storage and connection part of the driver). Would appreciate any suggestions on the above problem ? -- Thanks and regards Prakash Software Developer Tag: Aborting Irps for USB Endpoint 0 Tag: 56067
  - 16
    - IM driver not receiving packets for Intel NIC I have a IM driver working fine with all the NIC's accept Intel series. I tried to set ProtocolReceivePacket to NULL as specified in DDK document. But yet ProtocolReceive routine is not called. I kept both the routines none of them is getting called. Moreever when i send OID request OID_GEN_MAXIMUM_LOOKAHEAD,OID_GEN_MAC_OPTIONS , OID_802_3_MAXIMUM_LIST_SIZE , OID_GEN_MAXIMUM_FRAME_SIZE, OID_GEN_CURRENT_PACKET_FILTER the other NIC invokes PtRequestComplete with correct value od OID, but for Intel card it invokes PtRequestComplete for that many times but with OID value of last request. Has anybody got any clue?? Thanks in Advance Jyotsna Tag: Aborting Irps for USB Endpoint 0 Tag: 56065
  - 17
    - NdisOpenFile( ) gives blue screen hi.... Thanks a lot for your quick responses I am explaining a little more about my Ndis driver. I have used "passthru" sample of DDK. In passthru there is a file miniport.c In miniport.c there is a function MPSend( ). In this function i call my function named CopySendPacket( ) which is using NdisOpenFile( ). When this function is called BSOD appears. Using stack command, SoftIce displays following (hope this may help) 8053B438 80574AC1 ntoskrnl!ExInterLockedAddLargeStatistic 8053B480 80578F0D ntoskrnl!IoCreateFile+0036 8053B4C0 804D4E91 ntoskrnl!IoCreateFile+002E 8053B4F4 00000000 ntoskrnl!KeInitializeInterrupt+0A7C Tag: Aborting Irps for USB Endpoint 0 Tag: 56063
  - 18
    - Volume Snapshots.. Hi, Could any body shed some light on inner workings of Volume Snapshot driver volsnap.sys. I belive it sits above the Disk Class Driver and Duplications Disk level Io.Are there some good articles which explain how the storage stack looks like and works when volsnap is enabled on the system. Regards Subodh Tag: Aborting Irps for USB Endpoint 0 Tag: 56062
  - 19
    - 1394 isochronous data corrupted Hello, I'vew written a device driver for Windows XP which receives IEEE1394 isochronous data packets. The devices sends these packets at S400. We use different sizes for the packets and were below 2048 bytes all the time. No problems at all. Now we need packets which can be bigger and must realize that data is corrupted on some PCs. We don't know what these PCs makes different from the others. There seems to be no common thing at all. As I told you before, we receive packets which are bigger than 2048 bytes and some of the packets on some of our PCs are filled with some invalid data quadlets. All wrong quadlets are above the 2048 bytes boundary. The problem occurs also if we send only a few data packets per second (say 20 or so). It is not really depending on CPU load but if we move windows on the desktop we increase the frequency of the wrong quadlets. The wrong data is not from the same packet or from one of the others (we generated sythetic data for these tests). A frequent pattern is: 6 or 7 wrong quadlets, every second is 0x0. We use XP and XP SP1 (I did not test XP SP2 because a software I need for the tests doesn't run at all under SP2. It's not from our company so I have to wait for their next release.) I use the following parameters for REQUEST_ISOCH_ALLOCATE_RESOURCES: Irb->u.IsochAllocateResources.fulFlags = RESOURCE_USED_IN_LISTENING | RESOURCE_USE_PACKET_BASED|RESOURCE_STRIP_ADDITIONAL_QUADLETS; Irb->u.IsochAllocateResources.nQuadletsToStrip = 1; Irb->u.IsochAllocateResources.nMaxBytesPerFrame = 4096; Irb->u.IsochAllocateResources.nMaxBufferSize = someFactor * 4096; If I didn't do something wrong I can't believe I'm the only person in universe which has that problem?! Please help. Regards, Udo. Tag: Aborting Irps for USB Endpoint 0 Tag: 56060
  - 20
    - Ndis packet filter Hello, I'm doing research on the possibility of making a packet filter based on the idea of patching the NDIS_MINIPORT_CHARACTERISTICS structure with your own functions. In my SendPacket(s)Handler I make a copy of the original packet and send it to the original function and in my NdisMSendComplete I free the packet. The copy of the packet is made based on the pass through IM sample code. This works well for most of the real and virtual NICs with one exception so far, an IntelPRO/100 on board card. With this NIC after about 15-20 packets the original SendPackets function will access a NULL pointer causing a bug check. If I let the original packets pass through, everything works, so my guess is that my set-up for the packet is wrong, and probably the NDIS is doing some set-up on the packes before sending them to the miniports. The NIC seems to be a bus master adaptor, so, the NDIS is probably doing DMA related initialization on the NDIS_PACKET before sending it to the miniports. Any help to shed some light on this problem will be appreciated Thanks Tag: Aborting Irps for USB Endpoint 0 Tag: 56033
  - 21
    - Question about Printers and Paper Hi My virtual printer has 2 bins... one is called "A4 Printer" the other "A3 Printer" ... now, the driver accepts A4 and A3 paper-sizes. But... is there a way, that you can choose A4 only if the "A4 Printer"-Bin is selected and the A3-paper can only be choosed if the other bin is selected? thanks MR Tag: Aborting Irps for USB Endpoint 0 Tag: 56030
  - 22
    - Virtual network adapters Hi, I have written a virtual network adapter/Virtual miniort driver(NDIS). I want to send the data i receive in my virtual adapter's MiniportSend funcion across network using a network device. Inorder to do that, the packet i have received in virtual miniport driver's MiniportSend has to be passed to MiniportSend of miniport driver. NDIS intermediate drivers passes the packet to the miniport driver using NdisSend. Since the driver i have written is not an intermediate driver,NdisSend function can not be used to send the packet to a miniport driver. NdisSend function requires the binding handle which a virtual miniport driver can not have. Only NDIS intermediate driver can get a binding handle which it can use in NdisSend. Could you let me know how can i pass the packet to the MiniportSend of miniport driver from my MiniportSend of virtual miniport driver? Thanks & Regards, Senthil Tag: Aborting Irps for USB Endpoint 0 Tag: 56022
  - 23
    - dll based service Any info on how to develop and install dll based service compatible w/ svchost.exe? TIA Andrew Tag: Aborting Irps for USB Endpoint 0 Tag: 56008
  - 24
    - driver instalation Hi All, I've a HID pointer device and my driver isn't signed with WQHL. If I install my driver manually or using a simple tool like FASTINST from Walter Oney' book and then connect my USB device, the windows hid.sys driver loads instead of my driver (as expected, because my driver isn't signed with WQHL). But, After running the device manager and clicking above the windows driver and updating it to my driver, Every time a plug my devive, my driver loads as expected (good, it's the final rsult I want from my instalation). I would like to do some steps (I guess hacking the windows registry) to install my driver just once and get it load when I plug my device without manually enter in Device Manager and updating it. I feel good with the message "..this driver ins't signed...", I would like just to avoid the second manual step into device manager. Thanks Very Much Edgard Lima Tag: Aborting Irps for USB Endpoint 0 Tag: 56003
  - 25
    - Reading Device Parameters in Registry In my driver I am attempting to read some parameters stored in my board's Device Parameters subkey. I am calling IoOpenDeviceRegistryKey, with PLUGPLAY_REGKEY_DEVICE KeyType, to open the Key and calling ZwQueryValueKey to get the partial info structure. The problem is that the data returned in the partial info structure is always some random value. The data length and type returned in the structure are correct though. The status returned by both IoOpenDeviceRegistryKey and ZwQueryValueKey indicates success. Also, I have been able to set the value using ZwSetValueKey and view this new value in regedit. Any suggestions on what I might be doing incorrectly? Thank you for your time. Tag: Aborting Irps for USB Endpoint 0 Tag: 56001
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  - 1
    - USB==> will this update MaxTransferSize for the current pipe? Hi, OS: Win 2000 Sp4 much after the configuration for the USB device has been done by the client driver , during regular course of events , if i do the following : 1) Get the USBD_INTERFACE_INFORMATION structure for the currently selected interface ( previously stored inside device extension ) 2) Get the USBD_PIPE_INFORMATION structure for the pipe i am interested in by indexing the Pipes array in interface info struct of step 1 abov 3) Set the MaximumTransferSize member of the USBD_PIPE_INFORMATION structure of step 2 above to a non-default value . 4) Get PipeHandle from USBD_PIPE_INFORMATION of step 2 above 5) make a URB by calling UsbBuildInterruptOrBulkTransferRequest( function and passing pipeHandle of step 4 above as parameter number 3 6) pass this URB to the USB stack ( usbd.sys ) through IoCallDriver , the call succeeds In this scenario , should i expect the MaximumTransferSize for the pipe to be updated ? thanks and regards Taha Tag: Aborting Irps for USB Endpoint 0 Tag: 55999
  - 2
    - IM protocol driver performance and optimization We are currently working on software for XP where we need to receive a 70 Mbyte/s data stream via GbE. The data is basically raw Ethernet packets with a simple proprietary protocol. Currently we use a modified NDISUIO to receive the data and process the proprietary protocol in the user level since that makes debugging much easier. Preliminary hotspot analysis using Intel VTune shows that a lot of time is spent doing memory copies. To reduce this we thought of moving the protocol into the kernel. To do this I have looked at the DDK passthru sample and at IMSAMP. The latter seems to be better in terms of avoiding unnecessary memory copies. Is an IM protocol driver the "way to go" or are there better ways of doing this? What is the performance penalty to be expected from an IM protocol driver? I would like to avoid putting the protocol into NDISUIO directly because it seems to make things very complex in NDISUIO. The task manager as an instrument to measure CPU load is very unreliable. What is a good tool to measure and optimize NDIS/protocol driver performance? Thanks for any suggestions. Tag: Aborting Irps for USB Endpoint 0 Tag: 55989
  - 3
    - FONTOBJ_pwszFontFilePaths question Hello I am writing a user mode printer driver for Win XP/2000 and I need to find out the font file names for the fonts passed in DrvTextOut(). In the DDK documentation I found that FONTOBJ_pwszFontFilePaths seems to return the exact information I want. But I could not use it, and here I have some questions: 1. Is the FONTOBJ_pwszFontFilePaths working only in the kernel mode drivers? Because mine is a user mode driver, so could it be that I cannot use it at all? 2. The DDK documentation says that we have to find the function address by calling EngFindImageProcAddress function. This seems to work only in kernel mode drivers and returns always NULL pointers when I call it from the user mode driver. So I used instead GetProcAddress() function: typedef VOID (*FONTFILEPROC)(FONTOBJ*, ULONG); HMODULE hMod = GetModuleHandle(TEXT("GDI32.dll")); FONTFILEPROC ProcAdd = (FONTFILEPROC) GetProcAddress(hMod, "FONTOBJ_pwszFontFilePaths") This seems to work for other FONTOBJ_xxx services but not for FONTOBJ_pwszFontFilePaths. Is this service implemented in other dll, not in the gdi32.dll? Thank you Luminita Tag: Aborting Irps for USB Endpoint 0 Tag: 55987
  - 4
    - NdisOpenfile( ) gives blue screen hi..... i have written piece of code below. I am experiencing BSOD when tries to open the file. Sometimes this same code runs without BSOD but most of the times i face BSOD. I am using compaq's P-4, OS is Xp. Suggestions/Ideas/recommendations are required & highly appreciated. Thanks in advance. NDIS_STATUS myStatus; NDIS_HANDLE myFileHandle=NULL; UINT fileLength; NDIS_STRING fileName=NDIS_STRING_CONST("test.txt"); NDIS_PHYSICAL_ADDRESS MinusOne=NDIS_PHYSICAL_ADDRESS_CONST(-1,-1); NdisOpenFile(&myStatus,&myFileHandle,&fileLength,&fileName,MinusOne); if(myStatus==NDIS_STATUS_SUCCESS) { ........ } Tag: Aborting Irps for USB Endpoint 0 Tag: 55983
  - 5
    - Tools My company produce Sond and Vibration Analyzers. Measures have USB ports. I write drivers for Windows 98, 2000, xp and 2003 Now I must write drivers from Windows 2003 Pocket PC SE(Windows mobile 2003 SE) Wat tools I need to download / buy ??? I'm new in windows emeded. Is Windows mobile 2003 the same as Windows CE 5.0 ??? Best regards Radek from Poland Tag: Aborting Irps for USB Endpoint 0 Tag: 55982
  - 6
    - very stranger questiones about disk read write on Windows XP HI, all, i am writing a disk filter driver (class upperfilter), it works fine on Windows 2000 , but cannot work on Windows XP. After debug the driver, i found, Asynch Read sometimes failed. In the DispathRead Routine, i first read some specific sectors ,then do the system read operation. By read the specific sectors, i am using Asynch Read, set a event to wait for the completion,after read complte, i check the IoStatus.Status, sometimes the value is not STATUS_SUCCESS. why ? If i do not check the IoStatus.Status, it works fine. In Windows 2000, the value is always STATUS_SUCCESS. Anyway, i cannot understand this, who can help me out? If i use Synch Read , the system will be halt , windows xp cannot start up? why? Thanks for your help. Tag: Aborting Irps for USB Endpoint 0 Tag: 55981
  - 7
    - Change in Interface Descriptor Number I am having a strange problem.Any help would be greatly appreciated. I have a lower filter driver for usbhub.sys.My USB Composite device supports Video Class ,audio and Mass Storage. I have two interfaces for video ,two for audio and 1 for mass storage.In my driver I hide 1 (Video )Interface Descriptor from usbhub.sys and shift rest of the interface descriptors .This leads to a crash in usbaudio.sys.Here are the descriptors for audio Interface Descriptor : 09 04 01 00 00 01 01 00 02 09 24 01 00 01 1e 00 01 03 0c 24 02 01 01 02 00 01 00 00 00 00 09 24 03 02 01 01 00 01 00 09 04 02 00 00 01 02 00 02 09 04 02 01 01 01 02 00 02 07 24 01 02 01 02 00 0b 24 02 01 01 01 08 01 22 56 00 09 05 84 01 64 00 01 00 00 07 25 01 00 00 00 00 The only change I make is that I have changed the audio Interface Descriptor Number from 02 to 01 and 03 to 02 only Crash dump : PAGE_FAULT_IN_NONPAGED_AREA (50) Invalid system memory was referenced. This cannot be protected by try-except, it must be protected by a Probe. Typically the address is just plain bad or it is pointing at freed memory. Arguments: Arg1: c5c5c5c5, memory referenced. Arg2: 00000000, value 0 = read operation, 1 = write operation. Arg3: f4b9668e, If non-zero, the instruction address which referenced the bad memory address. Arg4: 00000000, (reserved) Debugging Details: ------------------ READ_ADDRESS: c5c5c5c5 Nonpaged pool FAULTING_IP: usbaudio+668e f4b9668e 668b08 mov cx,[eax] MM_INTERNAL_CODE: 0 DEFAULT_BUCKET_ID: DRIVER_FAULT BUGCHECK_STR: 0x50 LAST_CONTROL_TRANSFER: from f4b9095b to f4b9668e TRAP_FRAME: f5659888 -- (.trap fffffffff5659888) ErrCode = 00000000 eax=c5c5c5c5 ebx=00000000 ecx=00000000 edx=c5c5c5c5 esi=b68fb000 edi=b68f9000 eip=f4b9668e esp=f56598fc ebp=f5659930 iopl=0 nv up ei pl zr na po nc cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00210246 usbaudio+0x668e: f4b9668e 668b08 mov cx,[eax] Resetting default scope STACK_TEXT: WARNING: Stack unwind information not available. Following frames may be wrong. f5659930 f4b9095b 82ca4b78 00000000 00000030 usbaudio+0x668e f5659a08 f4b94c6a b6924f48 82ca4b78 f5659a34 usbaudio+0x95b f5659a18 f4b7a2b0 b6924f48 b6924fc0 b6924f48 usbaudio+0x4c6a f5659a34 f4b820d7 82ca4900 00000000 b6924f48 STREAM!SCIssueRequestToDevice+0xd7 f5659a64 f4b85bbb 00000107 b694efb8 00000048 STREAM!SCSubmitRequest+0xe1 f5659b04 f4b84ee3 b695aeb8 82ca4898 80063418 STREAM!SCStartWorker+0x5da f5659b60 8060b34f 82ca4898 b695aeb8 b695aeb8 STREAM!StreamClassPnP+0x351 f5659bac 8054a60a 00020000 8342d708 00000000 nt!IovSpecialIrpCallDriver+0xe4 f5659bd8 80433b27 82ca4898 f5659bf8 f5659c20 nt!IopSynchronousCall+0x101 f5659c24 8053f249 86742e98 00000000 8342d708 nt!IopStartDevice+0x149 f5659c58 8053f054 8342d708 f5659cf0 80063418 nt!IopStartAndEnumerateDevice+0x83 f5659c78 80549b9a 8342d708 f5659cf0 00000000 nt!IopProcessStartDevicesWorker+0xa8 f5659c94 8053f038 807af508 8053efac f5659cf0 nt!IopForAllChildDeviceNodes+0x54 f5659cb8 8053eefb 807af538 f5659cf0 817955b8 nt!IopProcessStartDevicesWorker+0x8c f5659cd8 8053ee1c 817958f8 f5659cf0 8187e588 nt!IopProcessStartDevices+0x79 f5659cfc 8043067c 00000000 00000000 00000000 nt!IopBusCheck+0xac f5659d40 8041c794 00000000 00000000 00000000 nt!IopDeviceActionWorker+0x469 f5659da8 804aa09a 80000001 00000000 00000000 nt!ExpWorkerThread+0x106 f5659ddc 804c526a 8041c68e 80000001 00000000 nt!PspSystemThreadStartup+0x54 00000000 00000000 00000000 00000000 00000000 nt!KiThreadStartup+0x16 FOLLOWUP_IP: usbaudio+668e f4b9668e 668b08 mov cx,[eax] SYMBOL_STACK_INDEX: 0 FOLLOWUP_NAME: MachineOwner SYMBOL_NAME: usbaudio+668e MODULE_NAME: usbaudio IMAGE_NAME: usbaudio.sys DEBUG_FLR_IMAGE_TIMESTAMP: 3803cabb STACK_COMMAND: .trap fffffffff5659888 ; kb BUCKET_ID: 0x50_usbaudio+668e Followup: MachineOwner --------- kd> .trap fffffffff5659888 ; kb ErrCode = 00000000 eax=c5c5c5c5 ebx=00000000 ecx=00000000 edx=c5c5c5c5 esi=b68fb000 edi=b68f9000 eip=f4b9668e esp=f56598fc ebp=f5659930 iopl=0 nv up ei pl zr na po nc cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00210246 usbaudio+0x668e: f4b9668e 668b08 mov cx,[eax] *** Stack trace for last set context - .thread/.cxr resets it Tag: Aborting Irps for USB Endpoint 0 Tag: 55972
  - 8
    - HID minidriver : ERROR_ACCESS_DENIED error message Hi, I have developed a HID minidriver for a USB keyboard which is not a standard one. This is targetted to work on Win2k and WinXP. In my application, I'm calling HIDd_GetGuid(..) and later am calling the normal SetupDiXXX(..) routines to get teh device name. After this, I'm calling CreateFile(..) to open a handle. Here, it is returning INVALID_HANDLE_VALUE. The parameters are : name, GENERIC_READ|GENERIC_WRITE, 0, OPEN_EXISTING, FILE_ATTRIBUTES_NORMAL, NULL. When I call GetLastError(), its showing 5 == ERROR_ACCESS_DENIED. One more observation is : When I call the same CraeteFile(..) with dwDesiredAccess = 0, its openeing a handle. But I cannot do any read\write operations with this handle. So How do I go about this prob? Thanks, Tag: Aborting Irps for USB Endpoint 0 Tag: 55971
  - 9
    - Question about property page of USBCAMD minidriver sample (usbintel) Sample code of USBCAMD minidriver support the property set PROPSETID_VIDCAP_VIDEOPROCAMP. Its property page should be implemented in kswdmcap.ax. However, it always shows another property page implemented in dshowext.ax. What causes this happen? How to determine which property page should be used for a certain property set? Best Regards Jackal Huang Tag: Aborting Irps for USB Endpoint 0 Tag: 55968
  - 10
    - Virtual Serial Port Driver and CreateFile My virtual serial port driver seems to work fine. I used lot of code from serial driver example in the DDK for external naming etc. HyperTerminal successfully opens the virtual port etc. However, when I try to open the port using CreateFile call (CreateFile("COM106:"...)), I get an error (123). I use SoftICE and I had a breakpoint set in the handler for IRP_MJ_CREATE but it never got hit. Any ideas? Thanks /kmk Tag: Aborting Irps for USB Endpoint 0 Tag: 55952
  - 11
    - Uninstalling a driver without using device manager? I'm looking for a way to uninstall and existing usb driver during an installation so that pnp will take affect and reinstall the driver. I would like to be able to do this during an InstallShield installation. I'd appreciate any ideas that you have, Dave Tag: Aborting Irps for USB Endpoint 0 Tag: 55950
  - 12
    - HID pointing device and the Virtual Desktop I have a HID device driver for an absolute pointing device attached to an XP computer with mulitple monitors. Everything I have read tells me the pointing device should map across the whole virtual desktop : this would allow me to choose which monitor to control by simple offsetting of the coordinate data. However, the device will only ever map to the Primary Desktop : no amount of scaling or offsetting of the coordinates can get the pointer over to the sencondary display at all. What is going on? I know a standard WACOM HID device will go over both desktops, so it can't be mouhid that's the problem. I am using a very standard absolute pointing device report descriptor, which has always worked just fine for a single screen. Adrian Taylor --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.799 / Virus Database: 543 - Release Date: 19/11/2004 Tag: Aborting Irps for USB Endpoint 0 Tag: 55949
  - 13
    - Network cable connection detection How do I disable a wireless network connection when a physical network cable is connected and what sort of driver can do the job. Max Tag: Aborting Irps for USB Endpoint 0 Tag: 55945
  - 14
    - error 1058 occuring... ...when attempting to start a legacy driver under winXP + sp2 Has anyone seen this before? The driver works fine under winXP + sp1 Please let me know if you have seen this, and if there's a way around the issue. Tag: Aborting Irps for USB Endpoint 0 Tag: 55944
  - 15
    - What is the difference between a network provider and a network redirector? Hello, is the network redirector just the filesystem driver itself? And a network provider includes the network redirector and a network provider library? I'am a bit confused... Thank for your efforts! -- h.wulff [dont send me an email] Tag: Aborting Irps for USB Endpoint 0 Tag: 55938
  - 16
    - Notification Window In a Dll I've been posting questions relate to this for a few days now. Yesterday I was criticized for not providing enough information. I always have mixed feelings about posting too much information, because I believe many will tire of reading, and move on. But, I'll give this a try. I've created a Window in a Dll to respond to PnP events from my USB device. I've double-checked the driver, and it seems to be registering and enabling the interface correctly. I suspect that it's my user mode code that's at fault. Below is my code for creating the window, where the UCan2NotificationWindowProc (not a class member by the way) is of the form: LRESULT CALLBACK UCan2NotificationWindowProc( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {} Can someone spot a problem that might prohibit it from receiving notifications? Thanks in advance, Dennis // Module-level variables HWND hNotificationWindow = NULL; LPCTSTR NotificationClassName = "CUCan2NotificationWnd"; LPCTSTR NotificationWindowName = "UCan2 Notification Window"; ATOM NotificationClassAtom = 0; HDEVNOTIFY hDeviceNotification = NULL; extern HINSTANCE hUCan2ApiInstance; // (Note: hUCan2ApiInstance is determined in a call to AfxGetInstanceHandle() in the InitInstance member function of the // class that the Visual Studio New Project Wizard created.) DWORD CreateNotificationWindow( GUID InterfaceClassGuid ){ WNDCLASSEX WC; WC.cbSize = sizeof(WNDCLASSEX); WC.style = 0; WC.lpfnWndProc = UCan2NotificationWindowProc; WC.cbClsExtra = 0; WC.cbWndExtra = 0; WC.hInstance = hUCan2ApiInstance; WC.hIcon = NULL; WC.hCursor = NULL; WC.hbrBackground = NULL; WC.lpszMenuName = NULL; WC.lpszClassName = NotificationClassName; WC.hIconSm = NULL; NotificationClassAtom = RegisterClassEx( &WC ); if( !NotificationClassAtom ) return GetLastError(); hNotificationWindow = CreateWindowEx( 0, // dwExStyle NotificationClassName, NotificationWindowName, 0, // dwStyle 0, // X 0, // Y 0, // Width 0, // Height NULL, // hWndParent NULL, // hMenu NULL, NULL // lpParam ); DEV_BROADCAST_DEVICEINTERFACE filter; ZeroMemory( &filter, sizeof(filter) ); filter.dbcc_size = sizeof(filter); filter.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE; filter.dbcc_classguid = InterfaceClassGuid; hDeviceNotification = RegisterDeviceNotification( hNotificationWindow, &filter, DEVICE_NOTIFY_WINDOW_HANDLE ); DWORD dwError = ERROR_SUCCESS; if(!hDeviceNotification) { dwError = GetLastError(); DestroyWindow( hNotificationWindow ); UnregisterClass( NotificationClassName, NULL ); } return dwError; } Tag: Aborting Irps for USB Endpoint 0 Tag: 55929
  - 17
    - PnP Signed Driver Problem - Serial Device I originally posted a message out here regarding this issue and had some great feedback. To summarize, we mfg a serial device that someone in marketing wanted to make PnP. Since we did not require any drivers, we were able to create an INF file and everything worked â?? UNTIL Microsoft implemented the signing. Now, even though the INF is in the INF folder, the end-user is being queried to add the hardware. We want that to go away. Someone out here recommended that we go through the process of getting a signature; we obtained a signed test driver from Microsoft, yet we are still getting the same results. I have attached the updated INF file as well as the original thread. Any ideas what is going on here? Thank you in advance for any help regarding this issue. Michael ; (c) Copyright 2000 Timekeeping Systems, Inc. [Version] Signature="$WINDOWS NT$" Class=Downloader ClassGUID={72CB8A7E-7BB7-49bd-A195-7686CA8C2CFD} Provider=%TKS% DriverVer=11/30/2004,2.00.0000 CatalogFile=tkspnpdl.cat [ClassInstall32] Addreg=DwnldrClassReg [DwnldrClassReg] HKR,,,0,%ClassName% HKR,,Icon,,-23 [Manufacturer] %TKS%=Standard [Standard] %DirectDevice.DeviceDesc%=Direct_Device, SERENUM\TKS0001 [Direct_Device.NT] [Direct_Device.NT.Services] AddService = , %SPSVCINST_ASSOCSERVICE%, [Direct_Device.NT.HW] AddReg=DeviceEnumReg [DeviceEnumReg] HKR,,%SerialNumber%, [Strings] TKS="TimeKeeping Systems, Inc." SPSVCINST_ASSOCSERVICE=0x00000002 ClassName="Downloader" DirectDevice.DeviceDesc="TKS Direct Downloader" SerialNumber="SerialNumber" -------------------------------- WHAT WE DID tkspnpdl.cat is the signature file that's named by us but provided by Microsoft. It's the test signature that we can't let out of our internal development systems under penalty of death. After RISâ??ing, with the DL not connected, I copied the INF to the INF folder and installed the MS signature per instructions below: ---- To prepare a system currently running a Microsoft Windows operating system for using test-signed drivers 1. Double-click the test root certificate file (Testroot.cer), and then click Install Certificate to add it to the system. 2. Click Place all certificates in the following store, and then click Browse. 3. Select the Show physical stores check box, and then expand Trusted Root Certification Authorities. 4. Select the Local Computer folder, and then click OK. 5. Complete the Certificate Import wizard and accept all defaults to install the certificate. After you complete this procedure, you can then install the driver with the Add New Hardware Wizard or by using Device Manager. ---- Instead of using the Add New Hardware Wizard, I simply shut down the PC, connected the DL, and rebooted. The Found New Hardware Wizard comes up as before. -------------------------------- ORIGINAL THREAD I have a VERY strange situation I need to solve. We mfg a serial hardware device for downloading data out of a reader. The downloader contains PnP code; when you place the device on the serial port, reboot or run the add device wizard, everything works fine. However, this PnP device does NOT require a driver, so we wrote the below INF file which seems to work fine. There is one catch I would like to solve, and perhaps someone knows how to do this. When we install the INF in the INF folder, we would expect the process to NOT query the end-user. This is NOT the case; the process is querying the user in all cases. Why is that? Is there something we need in our INF, or is it because we do not have a signed driver that is required? We would really like to avoid having the user have to constantly browse to the INF when it is already local to their PC. Any help would be most appreciated. Thanks! [Version] Signature="$WINDOWS NT$" Class=Downloader ClassGUID={72CB8A7E-7BB7-49bd-A195-7686CA8C2CFD} Provider=%TKS% DriverVer=06/05/2000,2.00.0000 [ClassInstall32] Addreg=DwnldrClassReg [DwnldrClassReg] HKR,,,0,%ClassName% HKR,,Icon,,-23 [Manufacturer] %TKS%=Standard [Standard] %DirectDevice.DeviceDesc%=Direct_Device, SERENUM\TKS0001 [Direct_Device.NT] [Direct_Device.NT.Services] AddService = , %SPSVCINST_ASSOCSERVICE%, [Direct_Device.NT.HW] AddReg=DeviceEnumReg [DeviceEnumReg] HKR,,%SerialNumber%, [Strings] TKS="TimeKeeping Systems, Inc." SPSVCINST_ASSOCSERVICE=0x00000002 ClassName="Downloader" DirectDevice.DeviceDesc="TKS Direct Downloader" SerialNumber="SerialNumber" "Don Burn" wrote: > As an unsigned driver, the system will ask. Also, how are you installing > the INF? Finally, you should run chkinf on your inf file, at present is > complains about: > > Errors: > a.. Line 1: (E22.1.1081) Directive: CatalogFile required (and must not be > blank) in section [Version] for WHQL digital signature. > a.. Line 3: (E22.1.1310) Class Downloader (ClassGUID > {72CB8A7E-7BB7-49bd-A195-7686CA8C2CFD}) is unrecognized. It's worth pointing out that these two errors are not necessarily bad (the second one, especially, is just ChkInf being excessively picky). As far as I can tell, the first error is unavoidable until your driver is WHQL certified. If you are still in development or for whatever reason aren't planning to certify (maybe because it's an internal tool), you can't do anything about that. It seems to me that the second error isn't even an error; the DDK specifically says that you can create a new class if your device doesn't fit into one of the pre-defined classes. If I'm misinterpreting the DDK (see help\install.chm, Device Installation>>Reference>>INF File Sections and Directives>>INF Version Section, the Class and CatalogFile entries) on either point, I'd like to know more about why. -Scot Tag: Aborting Irps for USB Endpoint 0 Tag: 55928
  - 18
    - Com port issue Hi, I don't know whether this is the right place to ask this question, but I would appreciate if someone could help me on this. The issue is that I have a application that is using com port(COM1) I need to mointor that are there any other applications who are trying to open the same port (COM1) and if yes release the port Is it possible and how??? -Thanks in Advance Tag: Aborting Irps for USB Endpoint 0 Tag: 55923
  - 19
    - Com port issue Hi, I don't know whether this is the right place to ask this question, but I would appreciate if someone could help me on this. The issue is that I have a application that is using com port(COM1) I need to mointor that are there any other applications who are trying to open the same port (COM1) and if yes release the port Is it possible and how??? -Thanks in Advance Tag: Aborting Irps for USB Endpoint 0 Tag: 55922
  - 20
    - how to set ssid? i want to write a program to allow user to choose a ssid( i have successfully get the current ssid list), and connect to ap,but I don't how to do it, the running operation system is Windows XP.Maybe someone can tell me how to write a protocol driver,thanks for any kind help. Tag: Aborting Irps for USB Endpoint 0 Tag: 55910
  - 21
    - How to generate network traffice in driver? hi,all: I am ready to write a driver ( IM driver ) to generate network traffic. I hope I can control the flow : generate traffic with special bandwith, for example, 4Mbits/s with frame size 100 bytes. what's more, I hope the flow is balanced, not bursted. how to do it? any idea? thanks. Expand AllCollapse All Tag: Aborting Irps for USB Endpoint 0 Tag: 55907
  - 22
    - pnp... timeout? Hello, I am trying to install all the device drivers via winbom (sysprep in factory mode) but for some reasons it takes so @#$%-ing long time. My OS is WinXP SP2. First, I see several activities on the system's hard disk but then... it just stays idle (hard disk LED doesn't blink at all). It stays in this mode for a while. Then it boots up to Windows, and sysprep "still" waits for PnP to finish. This also takes some time. My best guess is PnP is timed out because there're still some bangs in the device manager and when I reboot the system, PnP runs again and fixes those bangs. Does anyone know what could cause and how to solve this issue? Please advice, thanks! -P Tag: Aborting Irps for USB Endpoint 0 Tag: 55897
  - 23
    - Filter hook Thanks ahead of time for all that reply. We use a Filter hook by implementing the function PacketFilterExtensionPtr. We currently intercept ipv4. We are looking at adding support for ipv6. I see in the documentation that the first parameter passed to the callback function is the PacketHeader defined as IPHeader. This IPHeader is specific to ipv4. Will this filter hook allow us to see v6 packets? If so, does it pass a different structure if the packet is v6? Tag: Aborting Irps for USB Endpoint 0 Tag: 55892
  - 24
    - retrieving the physical location of a volume on one or more disks Hi, The IOCTL_VOLUME_GET_VOLUME_DISK_EXTENTS retrieves the physical location of a specified volume on one or more disks. However, this control code is not supported on win2k, which is a platform I must support. Does anyone know a method for retrieving this information that will work on win2k? In an unrelated discussion I noticed someone mentioned that this control code will not work for USB devices, it works fine for me though. The only reason I can think of that this would not work on USB devices is that the PDO for Removable Storage is disk.sys and since disk.sys is not a Volume Manager (like ftdisk.sys, for example), it might not support this control code. But as I mentioned, it seems that the control code works for all types of disks, even if they are Removal Storage and/or USB. Was the statement in the discussion I read wrong or am I missing something? Thanks, Shahar Tag: Aborting Irps for USB Endpoint 0 Tag: 55884
  - 25
    - i set a page's present/nonpresent bit to 0 in my driver, then while programs need some from the page , the system may reload the page from disk ,but i simply get a blue screem! why? i set a page's present/nonpresent bit to 0 in my driver, then while programs need some from the page , the system may reload the page from disk ,but i simply get a blue screem! why? Tag: Aborting Irps for USB Endpoint 0 Tag: 55875

How do I abort Irps in process for Endpoint 0 of my USB device? I see that I
can send an Urb of type
URB_FUNCTION_ABORT_PIPE, in which I specify the pipe handle. But I where do
I get a handle to Endpoint 0?
The USBD_INTERFACE_INFORMATION structure seems to contain information about
pipes, but not for Endpoint 0.
Thanks in advance for the help,
Dennis

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Re: Aborting Irps for USB Endpoint 0 by Doron

Doron
Tue Dec 07 10:49:15 CST 2004

call IoCancelIrp on the irp you sent down the stack.

d
--
Please do not send e-mail directly to this alias. this alias is for
newsgroup purposes only.
This posting is provided "AS IS" with no warranties, and confers no rights.

"db_from_mn" <dburns@rtessentials.com> wrote in message
news:A_ydnXbK8t3KXSjcRVn-oQ@comcast.com...
> How do I abort Irps in process for Endpoint 0 of my USB device? I see that
> I can send an Urb of type
> URB_FUNCTION_ABORT_PIPE, in which I specify the pipe handle. But I where
> do I get a handle to Endpoint 0?
> The USBD_INTERFACE_INFORMATION structure seems to contain information
> about pipes, but not for Endpoint 0.
> Thanks in advance for the help,
> Dennis
>

Top

Re: Aborting Irps for USB Endpoint 0 by db_from_mn

db_from_mn
Tue Dec 07 11:51:30 CST 2004

Hi Doron,
Thanks for the reply. I'll do as you suggest.
I still think it's curious that the interface to Endpoint 0 is so different
from the other.

Best Regards,
Dennis

"Doron Holan [MS]" <doronh@nospam.microsoft.com> wrote in message
news:Oyr0yyH3EHA.3120@TK2MSFTNGP12.phx.gbl...
> call IoCancelIrp on the irp you sent down the stack.
>
> d
> --
> Please do not send e-mail directly to this alias. this alias is for
> newsgroup purposes only.
> This posting is provided "AS IS" with no warranties, and confers no
> rights.
>
>
> "db_from_mn" <dburns@rtessentials.com> wrote in message
> news:A_ydnXbK8t3KXSjcRVn-oQ@comcast.com...
>> How do I abort Irps in process for Endpoint 0 of my USB device? I see
>> that I can send an Urb of type
>> URB_FUNCTION_ABORT_PIPE, in which I specify the pipe handle. But I where
>> do I get a handle to Endpoint 0?
>> The USBD_INTERFACE_INFORMATION structure seems to contain information
>> about pipes, but not for Endpoint 0.
>> Thanks in advance for the help,
>> Dennis
>>
>
>

Top