147 lines
3.5 KiB
Groff
147 lines
3.5 KiB
Groff
.\"
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.\" Copyright (c) 2004 Max Laier <mlaier@freebsd.org>
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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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.\" $FreeBSD$
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.\"
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.Dd December 24, 2004
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.Dt ALTQ 4
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.Os
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.Sh NAME
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.Nm ALTQ
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.Nd Alternate queuing of network packets
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.Sh DESCRIPTION
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The
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.Nm
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framework provides several disciplines for queuing outgoing network packets.
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This is done by modifications to the interface packet queues.
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See
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.Xr altq 9
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for details.
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.Pp
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The user interface for
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.Nm
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is implemented by the
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.Xr pfctl 8
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utility, so please refer to the
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.Xr pfctl 8
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and the
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.Xr pf.conf 5
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manpages for a complete description of the
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.Nm
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capabilities and how to use it.
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.Ss Kernel Options
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The following options in the kernel configuration file are related to
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.Nm
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operation:
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.Pp
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.Bl -tag -width ".Dv ALTQ_DEBUG" -compact
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.It Dv ALTQ
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enable
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.Nm
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.It Dv ALTQ_CBQ
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build the
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.Dq "Class Based Queuing"
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discipline.
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.It Dv ALTQ_RED
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build the
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.Dq "Random Early Drop"
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extension.
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.It Dv ALTQ_RIO
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build
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.Dq "Random Early Drop"
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for input and output.
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.It Dv ALTQ_HFSC
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build the
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.Dq "Hierarchical Packet Scheduler"
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discipline.
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.It Dv ALTQ_CDNR
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build the traffic conditioner.
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This option is meaningless at the moment as the conditioner is not used by
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any of the available disciplines or consumers.
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.It Dv ALTQ_PRIQ
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build the
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.Dq "Priority Queuing"
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discipline.
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.It Dv ALTQ_NOPCC
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required for SMP builds.
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.It Dv ALTQ_DEBUG
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enable additional debugging facilities.
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.El
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.Pp
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Note that
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.Nm Ns -disciplines
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cannot be loaded as kernel modules.
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In order to use a certain discipline you have to build it into a custom
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kernel.
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The
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.Xr pf 4
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interface, that is required for the configuration process of
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.Nm
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can be loaded as a module.
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.Sh SUPPORTED DEVICES
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The driver modifications described in
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.Xr altq 9
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are required to use a certain network card with
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.Nm .
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They have been applied to the following hardware drivers:
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.Xr an 4 ,
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.Xr ath 4 ,
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.Xr awi 4 ,
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.Xr bfe 4 ,
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.Xr bge 4 ,
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.Xr dc 4 ,
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.Xr de 4 ,
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.Xr ed 4 ,
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.Xr em 4 ,
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.Xr fxp 4 ,
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.Xr hme 4 ,
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.Xr lnc 4 ,
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.Xr rl 4 ,
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.Xr sf 4 ,
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.Xr sis 4 ,
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.Xr sk 4 ,
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.Xr vr 4 ,
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.Xr wi 4 ,
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and
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.Xr xl 4 .
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.Pp
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The
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.Xr ndis 4
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framework also has support for
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.Nm
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and thus all encapsulated drivers.
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.Pp
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The
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.Xr tun 4
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pseudo driver also does support
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.Nm
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and includes the required modifications.
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.Sh SEE ALSO
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.Xr pf 4 ,
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.Xr pf.conf 5 ,
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.Xr ipfw 8 ,
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.Xr pfctl 8 ,
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.Xr altq 9 .
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