115 lines
3.5 KiB
Groff
115 lines
3.5 KiB
Groff
.\" Copyright (c) 2001-2002 Maksim Yevmenkin <m_evmenkin@yahoo.com>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $Id: l2ping.8,v 1.3 2003/05/21 01:00:19 max Exp $
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.\" $FreeBSD$
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.\"
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.Dd March 29, 2011
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.Dt L2PING 8
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.Os
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.Sh NAME
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.Nm l2ping
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.Nd send L2CAP ECHO_REQUEST to remote devices
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.Sh SYNOPSIS
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.Nm
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.Op Fl fhn
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.Fl a Ar remote
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.Op Fl c Ar count
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.Op Fl i Ar wait
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.Op Fl S Ar source
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.Op Fl s Ar size
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.Sh DESCRIPTION
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The
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.Nm
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utility uses L2CAP
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.Dv ECHO_REQUEST
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datagram to elicit an L2CAP
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.Dv ECHO_RESPONSE
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datagram from a remote device.
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.Pp
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The options are as follows:
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.Bl -tag -width indent
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.It Fl a Ar remote
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Specify the remote device to ping.
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The remote device can be specified by either its BD_ADDR or name.
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If name was specified then the
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.Nm
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utility will attempt to resolve the name via
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.Xr bt_gethostbyname 3 .
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.It Fl c Ar count
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Number of packets to send.
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If this option is not specified,
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.Nm
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will operate until interrupted.
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.It Fl f
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Do not wait between sending each packet.
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.It Fl h
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Display usage message and exit.
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.It Fl i Ar wait
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Wait
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.Ar wait
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seconds between sending each packet.
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The default is to wait for one second between each packet.
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This option is ignored if
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.Fl f
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has been specified.
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.It Fl n
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Numeric output only.
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No attempt will be made to look up symbolic names for host addresses.
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.It Fl S Ar source
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Specify the local device which should be used to send L2CAP
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.Dv ECHO_REQUEST
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datagrams.
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The local device can be specified by either its BD_ADDR or name.
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If name was specified then the
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.Nm
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utility will attempt to resolve the name via
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.Xr bt_gethostbyname 3 .
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.It Fl s Ar size
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Specify the number of payload bytes to be sent.
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The default size is 44 bytes.
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It is calculated as minimum L2CAP MTU (48 bytes) minus the size of the L2CAP
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signalling command header (4 bytes).
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The maximum size is 65531 bytes.
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Is is calculated as maximum L2CAP MTU
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(65535 bytes) minus four bytes of payload reserved for
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.Nm
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internal use.
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Use this option with caution.
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Some implementations may not like large sizes and may hang or even crash.
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.El
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.Sh EXIT STATUS
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.Ex -std
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.Sh SEE ALSO
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.Xr bluetooth 3 ,
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.Xr netgraph 3 ,
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.Xr netgraph 4 ,
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.Xr ng_l2cap 4 ,
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.Xr l2control 8
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.Sh AUTHORS
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.An Maksim Yevmenkin Aq Mt emax@FreeBSD.org
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.Sh BUGS
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Could collect more statistic.
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Could check for duplicated, corrupted and lost packets.
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