_URB_CONTROL_GET_CONFIGURATION_REQUEST structure (usb.h)
The _URB_CONTROL_GET_CONFIGURATION_REQUEST structure is used by USB client drivers to retrieve the current configuration for a device.
Syntax
struct _URB_CONTROL_GET_CONFIGURATION_REQUEST {
struct _URB_HEADER Hdr;
PVOID Reserved;
ULONG Reserved0;
ULONG TransferBufferLength;
PVOID TransferBuffer;
PMDL TransferBufferMDL;
struct _URB *UrbLink;
struct _URB_HCD_AREA hca;
UCHAR Reserved1[8];
};
Members
Hdr
Pointer to a _URB_HEADER structure that specifies the URB header information. Hdr.Function must be set to URB_FUNCTION_GET_CONFIGURATION.
Hdr.Length must equal sizeof(_URB_CONTROL_GET_CONFIGURATION_REQUEST).
Reserved
Reserved. Do not use.
Reserved0
Reserved. Do not use.
TransferBufferLength
Must be 1. This member specifies the length, in bytes, of the buffer specified in TransferBuffer or described in TransferBufferMDL.
TransferBuffer
Pointer to a resident buffer for the transfer or is NULL if an MDL is supplied in TransferBufferMDL. The bus driver returns a single byte that specifies the index of the current configuration.
TransferBufferMDL
Pointer to an MDL that describes a resident buffer or is NULL if a buffer is supplied in TransferBuffer. The bus driver returns a single byte that specifies the index of the current configuration. This MDL must be allocated from nonpaged pool.
UrbLink
Reserved. Do not use.
hca
Reserved. Do not use.
Reserved1[8]
Reserved. Do not use.
Remarks
The reserved members of this structure must be treated as opaque and are reserved for system use.
Requirements
| Requirement | Value |
|---|---|
| Header | usb.h (include Usb.h) |