The structure of the COMM_BOP packet element is as follows:

 typedef struct _COMM_BOP {
   USHORT CommType;
   ULONG Length;
   ULONG Data;
 } COMM_BOP,
  *PCOMM_BOP;

CommType: A 16-bit, unsigned integer that indicates the type of this COMM_PACKET element. MUST be set to 0x0001.

Length: A 32-bit, unsigned integer that indicates the length in bytes of the data following the Length field. MUST be 0x00000004.

Data: A 32-bit, unsigned integer that contains the data within this COMM_PACKET element. MUST be set to 0x00000000.