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!usb3kd.urb

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The !usb3kd.urb extension displays information about a USB request block (URB).

!usb3kd.urb UrbAddress

Parameters

UrbAddress
Address of the URB.

DLL

Usb3kd.dll

Examples

The following example shows the address of a URB (0xfffffa8005a2cbe8) in the output of the !xhci_deviceslots command.

3: kd> !xhci_deviceslots 0xfffffa800520d2d0

## Dumping dt _DEVICESLOT_DATA 0xfffffa8003612e80
----------------------------------------------
DeviceContextBase: VA 0xfffffa8005a64000 LA 0x116864000 !wdfcommonbuffer 0x57ffa7ca758 Size 4096

## [1] SlotID : dt USBXHCI!_USBDEVICE_DATA 0xfffffa80059027d0 dt _SLOT_CONTEXT32 0xfffffa8005a65000
------------------------------------------------------------------------------------------------
    USB\VID_...
    SlotEnabled IsDevice NumberOfTTs 0 TTThinkTime 0
    ...
            PendingTransferList: 
                [0] dt _TRANSFER_DATA 0xfffffa80059727f0 !urb 0xfffffa8005a2cbe8 !wdfrequest 0x57ffa68d998 TransferState_Pending
    ...

The following example passes the address of the URB to the !usb3kd.urb command.

3: kd> !urb 0xfffffa8005a2cbe8

## Dumping URB 0xfffffa8005a2cbe8
------------------------------
Function:         URB_FUNCTION_BULK_OR_INTERRUPT_TRANSFER (0x9)
UsbdDeviceHandle: 
    !ucx_device 0xfffffa8005901840
    !xhci_deviceslots 0xfffffa800520d2d0 1

Status:           USBD_STATUS_PENDING (0x40000000)
UsbdFlags:        (0x0)
dt _URB_BULK_OR_INTERRUPT_TRANSFER 0xfffffa8005a2cbe8
PipeHandle:            0xfffffa800596f720
TransferFlags:         (0x1) USBD_TRANSFER_DIRECTION_IN
TransferBufferLength:  0x0
TransferBuffer:        0xfffffa8005a2cc88
TransferBufferMDL:     0xfffffa8005848930

See also

USB 3.0 Extensions

Universal Serial Bus (USB) Drivers