freebsd-dev/usr.sbin/i4b/isdndebug/isdndebug.8

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.\"
.\" Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
.\"
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.\" modification, are permitted provided that the following conditions
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" $Id: isdndebug.8,v 1.11 2000/05/31 08:15:29 hm Exp $
.\"
.\" $FreeBSD$
.\"
.\" last edit-date: [Wed May 31 10:15:07 2000]
.\"
.Dd May 31, 2000
.Dt ISDNDEBUG 8
.Os
.Sh NAME
.Nm isdndebug
.Nd display and control isdn4bsd kernel variables and statistics
.Sh SYNOPSIS
.Nm
.Op Fl c
.Op Fl e
.Op Fl g
.Op Fl l Ar layer
.Op Fl m
.Op Fl q
.Op Fl r
.Op Fl s Ar value
.Op Fl u Ar unit
.Op Fl z
.Op Fl C
.Op Fl Q
.Sh DESCRIPTION
.Nm
is part of the isdn4bsd package and is used to control the level of
debugging output of the isdn4bsd kernel part.
Every layer of the isdn4bsd kernel uses a debugging mask which can be
manipulated using this utility.
.Pp
A second usage of
.Nm
is to display and reset chipset specific statistics and/or error counters
and and to display and reset the D-channel layer 2
(Q.921 LAPD protocol) statistics and error counters.
.Pp
The following options are available:
.Bl -tag -width Ds
.It Fl c
Display chipset specific statistics and/or error counters.
.It Fl e
Set debugging mask for the selected layer(s) to display errors only.
.It Fl g
Get the debugging mask for the selected layer(s).
.It Fl l
Specify the layer for which a command applies. Default is all layers.
.It Fl m
Set debugging mask for the selected layer(s) to display all possible
debugging messages (maximum output).
.It Fl q
Display the Q.921 (D-channel layer 2) frame receive/transmit statistics.
.It Fl r
Set debugging mask for the selected layer(s) to the compiled in default
(reset).
.It Fl s
Set debugging mask for the selected layer(s) to value. Value can be
specified in any number base supported by
.Xr sscanf 3 .
.It Fl u
Set the unit numbers for the -c, -q, -C and -Q flags.
.It Fl z
Set debugging mask for the selected layer(s) to no output at all (zero).
.It Fl H
Reset the chipset specific statistics and/or error counters to zero.
.It Fl Q
Reset the Q.921 (D-channel layer 2) frame receive/transmit statistics to zero.
.El
.Sh FILES
/dev/i4bctl
.Sh EXAMPLES
The command:
.Bd -literal -offset indent
isdndebug -g
.Ed
.Pp
displays the current debugging level for all ISDN layers
.Sh AUTHORS
The
.Nm
utility and this manpage were written by
.An Hellmuth Michaelis Aq hm@kts.org .