trsp(8) - NetBSD Manual Pages

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TRSP(8)                 NetBSD System Manager's Manual                 TRSP(8)


NAME

     trsp -- transliterate sequenced packet protocol trace


SYNOPSIS

     trsp [-a] [-j] [-p hex-address] [-s] [-t] [-z] [-N system] [-M core]


DESCRIPTION

     trsp interrogates the buffer of SPP trace records created when a socket
     is marked for ``debugging'' (see setsockopt(2)), and prints a readable
     description of these records.  When no options are supplied, trsp prints
     all the trace records found in the system grouped according to SPP con-
     nection protocol control block (PCB).  The following options may be used
     to alter this behavior.

     -a      In addition to the normal output, print the values of the source
             and destination addresses for each packet recorded.

     -j      Just give a list of the protocol control block addresses for
             which there are trace records.

     -p      Show only trace records associated with the protocol control
             block at the given address hex-address.

     -s      In addition to the normal output, print a detailed description of
             the packet sequencing information.

     -t      In addition to the normal output, print the values for all timers
             at each point in the trace.

     -z      Clear the in-kernel debugging buffers.

     -M core
             Extract values associated with the name list from core instead of
             the default /dev/kmem.

     -N system
             Extract the name list from system instead of the default /netbsd.

     The recommended use of trsp is as follows.  Isolate the problem and
     enable debugging on the socket(s) involved in the connection.  Find the
     address of the protocol control blocks associated with the sockets using
     the -A option to netstat(1).  Then run trsp with the -p option, supplying
     the associated protocol control block addresses.  If there are many sock-
     ets using the debugging option, the -j option may be useful in checking
     to see if any trace records are present for the socket in question.


FILES

     /dev/kmem  default kernel memory
     /netbsd    default system namelist


DIAGNOSTICS

     no namelist
             When the system image doesn't contain the proper symbols to find
             the trace buffer; others which should be self explanatory.


SEE ALSO

     netstat(1), setsockopt(2), trpt(8)


HISTORY

     The trsp command appeared in 4.3BSD.


BUGS

     Should also print the data for each input or output, but this is not
     saved in the trace record.

     The output format is inscrutable and should be described here.

NetBSD 3.0.1                     June 6, 1993                     NetBSD 3.0.1