MbbDeviceReceiveDeviceServiceSessionData function (mbbcx.h)

Client drivers call the MbbDeviceReceiveServiceSessionData method to pass received device service session data up to an application through the MBBCx framework.

Syntax

void MbbDeviceReceiveDeviceServiceSessionData(
  WDFDEVICE      Device,
  DSS_SESSION_ID SessionId,
  WDFMEMORY      Data
);

Parameters

Device

A handle to a framework device object the client driver obtained from a previous call to WdfDeviceCreate.

SessionId

The ID of the device service session obtained from a previous call to MbbAdapterGetSessionId.

Data

A driver-allocated WDFMEMORY object containing the data to pass to the application.

Return value

None

Remarks

For more information, see Handling device service sessions.

Example

The following example shows how a client driver might pass received DSS data to the framework's DSS receive handler.

VOID
MyReceiveDssData(
    _In_ PMY_DEVICE_CONTEXT DeviceContext,
    _In_ ULONG SessionId,
    _In_ PUCHAR InBuffer,
    _In_ ULONG InBufferSize
)
{
    NTSTATUS status = STATUS_SUCCESS;
    WDFMEMORY data;

    // Allocate the WDFMEMORY object from the received data buffer
    status = WdfMemoryAllocatePreallocated(WDF_NO_OBJECT_ATTRIBUTES,
                                            InBuffer,
                                            InBufferSize,
                                            &data);

    // Pass the received data to the framework
    if(NT_SUCCESS(status))
    {
        DeviceContext->DSSPacketsReceivedCount++;

        MbbDeviceReceiveServiceSessionData(DeviceContext->WdfDevice,
                                            SessionId,
                                            data);
        WdfObjectDelete(data);
    }
}

Requirements