INT 21 - Novell NetWare - FILE SERVER - GET FILE SERVER LAN I/O STATISTICS
        AH = E3h subfn E7h
        DS:SI -> request buffer (see below)
        ES:DI -> reply buffer (see below)
Return: AL = status
            00h successful
Note:   this function is supported by Advanced NetWare 2.1+
SeeAlso: AH=E3h/SF=11h,AH=E3h/SF=D3h,AH=E3h/SF=E8h,AH=E7h

Format of request buffer:
Offset  Size    Description
 00h    WORD    0001h (length of following data)
 02h    BYTE    E7h (subfunction "Get File Server LAN I/O Statistics")

Format of reply buffer:
Offset  Size    Description
 00h    WORD    (call) 0042h (size of following results buffer)
 02h    DWORD   clock ticks since system started
 06h    WORD    total routing buffers
 08h    WORD    maximum routing buffers used
 0Ah    WORD    current routing buffers used
 0Ch    DWORD   total file service packets
 10h    WORD    number of file service packets buffered
 12h    WORD    number of invalid connection packets
 14h    WORD    packets with bad logical connection numbers
 16h    WORD    number of packets received during processing
 18h    WORD    number of requests reprocessed
 1Ah    WORD    packets with bad sequence numbers
 1Ch    WORD    number of duplicate replies sent
 1Eh    WORD    number of acknowledgements sent
 20h    WORD    number of packets with bad request types
 22h    WORD    requests to attach to ws for which a request is being processed
 24h    WORD    requests to attach from ws which is already attaching
 26h    WORD    number of forged detach requests
 28h    WORD    detach requests with bad connection number
 2Ah    WORD    requests to detach from ws for which requests pending
 2Ch    WORD    number of cancelled replies
 2Eh    WORD    packets discarded due to excessive hop count
 30h    WORD    packets discarded due to unknown net
 32h    WORD    incoming packets discarded for lack of DGroup buffer
 34h    WORD    outgoing packets discarded due to lack of buffer
 36h    WORD    received packets destined for B,C, or D side drivers
 38h    DWORD   number of NetBIOS packets propagated through net
 3Ch    DWORD   total number of non-file-service packets
 40h    DWORD   total number of routed packets
Note:   all fields except the first are big-endian