NdisMEthIndicateReceive的问题

函数
VOID
  NdisMEthIndicateReceive(
    IN NDIS_HANDLE  MiniportAdapterHandle,
    IN NDIS_HANDLE  MiniportReceiveContext,
    IN PVOID  HeaderBuffer,
    IN UINT  HeaderBufferSize,
    IN PVOID  LookaheadBuffer,
    IN UINT  LookaheadBufferSize,
    IN UINT  PacketSize
    );
中的参数MiniportReceiveContext是怎么得到的?