INT 21 - Novell NetWare - FILE SERVER - GET CONNECTION'S USAGE STATISTICS
        AH = E3h subfn E5h
        DS:SI -> request buffer (see below)
        ES:DI -> reply buffer (see below)
Return: AL = status
            00h successful
            C6h no console rights
Notes:  this function is supported by Advanced NetWare 2.1+
        one must have console operator privileges to get statistics for logical
          connections other than one's own
SeeAlso: AH=E3h/SF=DAh,AH=E3h/SF=DBh,AH=E3h/SF=E1h

Format of request buffer:
Offset  Size    Description
 00h    WORD    0003h (length of following data)
 02h    BYTE    E5h (subfunction "Get Connection's Usage Statistics")
 03h    WORD    logical connection number (big-endian)

Format of reply buffer:
Offset  Size    Description
 00h    WORD    (call) 0014h (size of following results record)
 02h    DWORD   clock ticks since server started (big-endian)
 06h  6 BYTEs   bytes read
 0Ch  6 BYTEs   bytes written
 12h    DWORD   total request packets (big-endian)