NDIS_PD_ALLOCATE_QUEUE callback function (ndis.h)

Artikel
10/21/2021

The PacketDirect (PD) platform calls a PD-capable miniport driver's NdisPDAllocateQueue function to allocate a queue.

Note You must declare the function by using the NDIS_PD_ALLOCATE_QUEUE type. For more information, see the following Examples section.

Syntax

NDIS_PD_ALLOCATE_QUEUE NdisPdAllocateQueue;

NTSTATUS() NdisPdAllocateQueue(
  [in] NDIS_PD_PROVIDER_HANDLE ProviderHandle,
  [in] const NDIS_PD_QUEUE_PARAMETERS *QueueParameters,
       NDIS_PD_QUEUE **NdisPDQueue
)
{...}

Parameters

[in] ProviderHandle

A provider handle that identifies the PD-capable miniport driver's provider object.

[in] QueueParameters

All the parameters that are associated with the Queue. For more information see the NDIS_PD_QUEUE_PARAMETERS structure.

NdisPDQueue

A pointer to the Queue that is to be allocated. For more information, see the NDIS_PD_QUEUE structure.

Return value

This function returns STATUS_SUCCESS when it completes successful, otherwise it returns the appropriate error code.

Remarks

Examples

To define a NdisPDAllocateQueue function, you must first provide a function declaration that identifies the type of function you're defining. Windows provides a set of function types for drivers. Declaring a function using the function types helps Code Analysis for Drivers, Static Driver Verifier (SDV), and other verification tools find errors, and it's a requirement for writing drivers for the Windows operating system.

For example, to define a NdisPDAllocateQueue function that is named "MyPDAllocateQueue", use the NDIS_PD_ALLOCATE_QUEUE type as shown in this code example:

NDIS_PD_ALLOCATE_QUEUE MyPDAllocateQueue;

Then, implement your function as follows:

_Use_decl_annotations_
NTSTATUS
 MyPDAllocateQueue(
    NDIS_PD_PROVIDER_HANDLE  ProviderHandle,
    CONST NDIS_PD_QUEUE_PARAMETERS*  QueueParameters,
    NDIS_PD_QUEUE**  NdisPDQueue
    )
  {...}

The NDIS_PD_ALLOCATE_QUEUE function type is defined in the Ntddndis.h header file. To more accurately identify errors when you run the code analysis tools, be sure to add the Use_decl_annotations annotation to your function definition. The Use_decl_annotations annotation ensures that the annotations that are applied to the NDIS_PD_ALLOCATE_QUEUE function type in the header file are used. For more information about the requirements for function declarations, see Declaring Functions by Using Function Role Types for NDIS Drivers.

For information about Use_decl_annotations, see Annotating Function Behavior.

Requirements

Requirement	Value
Minimum supported client	Windows 10
Minimum supported server	Windows Server 2016
Target Platform	Windows
Header	ndis.h
IRQL	PASSIVE_LEVEL

Delen via