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.\"
.\" Copyright (c) 2010 Weongyo Jeong.
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\" $FreeBSD$
.\"
.Dd October 14, 2010
.Dt usbdump 8
.Os
.Sh NAME
.Nm usbdump
.Nd "dump traffic on USB host controller"
.Sh SYNOPSIS
.Nm
.Op Fl i Ar ifname
.Op Fl r Ar file
.Op Fl s Ar snaplen
.Op Fl v
.Op Fl w Ar file
.Sh DESCRIPTION
The
.Nm
utility provides a way to dump USB packets on each host controller.
.Pp
The following options are accepted.
.Bl -tag -width ".Fl f Ar file"
.It Fl i Ar ifname
Listen on USB bus interface.
.It Fl r Ar file
Read the raw packets from file.
.It Fl s Ar snaplen
Snapshot bytes from each packet.
.It Fl v
Enable debugging messages.
When it defined multiple times the verbose level increases.
.It Fl w Ar file
Write the raw packets to file.
.El
.Sh EXAMPLES
Captures the USB raw packets alive on usbus2:
.Pp
.Dl "usbdump -i usbus2 -s 256 -v"
.Pp
Dumps the USB raw packets of usbus2 into the file without packet
size limit:
.Pp
.Dl "usbdump -i usbus2 -s 0 -w /tmp/dump_pkts"
.Pp
Read the USB raw packets from the file:
.Pp
.Dl "usbdump -r /tmp/dump_pkts -v"
.Sh SEE ALSO
.Xr usbconfig 8
.Sh AUTHORS
.An Weongyo Jeong
.Aq weongyo@FreeBSD.org .
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