The NdisOidRequest function forwards a request to the underlying drivers to query the capabilities or status of an adapter or set the state of an adapter.
NDIS_STATUS NdisOidRequest( NDIS_HANDLE NdisBindingHandle, PNDIS_OID_REQUEST OidRequest );
The handle returned by the NdisOpenAdapterEx function that identifies the target adapter on the binding.
A pointer to an NDIS_OID_REQUEST structure that specifies the operation requested with a given OID_XXX code to either query the status of an adapter or to set the state of an adapter.
The underlying driver determines which NDIS_STATUS_XXX code NdisOidRequest returns, but it is usually one of the following values:
||The request operation completed successfully.|
||The request is being handled asynchronously, and NDIS will call the caller's ProtocolOidRequestComplete function when the request is completed.|
||The OID_XXX code specified in the Oid member of the NDIS_OID_REQUEST-structured buffer at OidRequest is invalid or unsupported by the underlying driver.|
||The value specified in the InformationBufferLength member of the NDIS_OID_REQUEST-structured buffer at OidRequest does not match the requirements for the given OID_XXX code. If the information buffer is too small, the BytesNeeded member contains the correct value for InformationBufferLength on return from NdisOidRequest.|
||The data supplied at InformationBuffer in the given NDIS_OID_REQUEST structure is invalid for the given OID_XXX code.|
||The underlying driver does not support the requested operation.|
||The request could not be satisfied due to a resource shortage. Usually, this return value indicates that an attempt to allocate memory was unsuccessful, but it does not necessarily indicate that the same request, submitted later, will be failed for the same reason.|
||The underlying driver attempted the requested operation, usually a set on a NIC, but it failed. For example, an attempt to set too many multicast addresses might cause the return of this value.|
||The underlying driver failed the requested operation because a close operation is in progress.|
||The underlying miniport driver cannot satisfy the request at this time because it is currently resetting the affected NIC. The caller's ProtocolStatusEx function was or will be called with NDIS_STATUS_RESET_START to indicate that a reset is in progress. This return value does not necessarily indicate that the same request, submitted later, will be failed for the same reason.|
||This value usually is a nonspecific default, returned when none of the more specific NDIS_STATUS_XXX caused the underlying driver to fail the request.|
A protocol driver must allocate sufficient memory to hold the information buffer that is associated with the specified OID. The driver must also allocate and set up the buffer at OidRequest before it calls NdisOidRequest. Both buffers must be allocated from nonpaged pool because the underlying driver runs at raised IRQL while processing the request.
NdisOidRequest forwards a request to underlying drivers or handles the request itself.. If the next-lower driver is an NDIS intermediate driver, it can call NdisOidRequest with an OID-specific request of its own before completing the request originally submitted by the higher-level driver.
Some errors returned are recoverable, including the following:
That is, a driver can modify the packet at OidRequest appropriately to correct the OID_XXX code or the size or contents of the buffer at InformationBuffer and resubmit the request packet to NdisOidRequest. The same packet might be satisfied on resubmission to NdisOidRequest if the original call indicated a reset in progress or that a resource shortage, which might be temporary, prevented that request from being carried out.
The NDIS library maintains bindings for underlying miniport drivers. NDIS can return information for binding-specific queries if a given OID is associated with a system-defined medium type for which the system provides a filter library.
For more information about the general and media-specific OIDs and their respective associated information buffers, see NDIS OIDs.
|Minimum supported client||Supported in NDIS 6.0 and later.|
|Header||ndis.h (include Ndis.h)|
|DDI compliance rules||Irql_OID_Function|