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NDK_FN_DEREGISTER_MR callback function (ndkpi.h)

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The NdkDeregisterMr (NDK_FN_DEREGISTER_MR) function deregisters a memory region that was previously registered with the NdkRegisterMr (NDK_FN_REGISTER_MR) function.

Syntax

NDK_FN_DEREGISTER_MR NdkFnDeregisterMr;

NTSTATUS NdkFnDeregisterMr(
  [in]           NDK_MR *pNdkMr,
  [in]           NDK_FN_REQUEST_COMPLETION RequestCompletion,
  [in, optional] PVOID RequestContext
)
{...}

Parameters

[in] pNdkMr

A pointer to an NDK memory region (MR) object (NDK_MR) that is in the registered state.

[in] RequestCompletion

A pointer to a request completion callback routine NdkRequestCompletion (NDK_FN_REQUEST_COMPLETION).

[in, optional] RequestContext

A context value to pass to the Context parameter of the callback function that is specified in the RequestCompletion parameter.

Return value

The NdkDeregisterMr function returns one of the following NTSTATUS codes.

Return code Description
STATUS_SUCCESS
 Deregistration was completed successfully.
STATUS_PENDING
 The operation is pending and will be completed later. The driver will call the specified RequestCompletion (NDK_FN_REQUEST_COMPLETION) function to complete the pending operation.
Other status codes
 An error occurred.

Requirements

Requirement Value
Minimum supported client None supported,Supported in NDIS 6.30 and later.
Minimum supported server Windows Server 2012
Target Platform Windows
Header ndkpi.h (include Ndkpi.h)
IRQL <=DISPATCH_LEVEL

See also

NDKPI Object Lifetime Requirements

NDK_FN_REGISTER_MR

NDK_FN_REQUEST_COMPLETION

NDK_MR