struct _REQUEST_MAILBOX// Size=0x20
{
    struct _REQUEST_MAILBOX * Next;// Offset=0x0 Size=0x4
    unsigned long RequestSummary;// Offset=0x4 Size=0x4
    struct _KREQUEST_PACKET RequestPacket;// Offset=0x8 Size=0x10
    long * NodeTargetCountAddr;// Offset=0x18 Size=0x4
    long NodeTargetCount;// Offset=0x1c Size=0x4
};