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<H1>Match-all classifier in tc</H1>
Section: Linux (8)<BR>Updated: 21 Oct 2015<BR><A HREF="#index">Index</A>
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<P>
<A NAME="lbAB">&nbsp;</A>
<H2>NAME</H2>

matchall - traffic control filter that matches every packet
<A NAME="lbAC">&nbsp;</A>
<H2>SYNOPSIS</H2>


<BR>

<B>tc</B> <B>filter</B> ... <B>matchall</B> [ 

<B>skip_sw</B> | <B>skip_hw</B>

 ] [ 

<B>action</B>

<I>ACTION_SPEC</I> ] [ 

<B>classid</B>

<I>CLASSID</I> ]

<A NAME="lbAD">&nbsp;</A>
<H2>DESCRIPTION</H2>

The
<B>matchall</B>

filter allows one to classify every packet that flows on the port and run a
action on it.
<A NAME="lbAE">&nbsp;</A>
<H2>OPTIONS</H2>

<DL COMPACT>
<DT><B>action</B><I> ACTION_SPEC</I>

<DD>
Apply an action from the generic actions framework on matching packets.
<DT><B>classid</B><I> CLASSID</I>

<DD>
Push matching packets into the class identified by
<I>CLASSID</I>.

<DT><B>skip_sw</B>

<DD>
Do not process filter by software. If hardware has no offload support for this
filter, or TC offload is not enabled for the interface, operation will fail.
<DT><B>skip_hw</B>

<DD>
Do not process filter by hardware.
</DL>
<A NAME="lbAF">&nbsp;</A>
<H2>EXAMPLES</H2>

To create ingress mirroring from port eth1 to port eth2:
<DL COMPACT><DT><DD>

<P>
tc qdisc  add dev eth1 handle ffff: clsact
tc filter add dev eth1 ingress                \
<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;matchall&nbsp;skip_sw&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\
<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;action&nbsp;mirred&nbsp;egress&nbsp;mirror&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\
<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;dev&nbsp;eth2

</DL>

<P>
The first command creates a clsact qdisc with handle
<B>ffff:</B>

on device
<B>eth1</B>

where the second command attaches a matchall filters on it that mirrors the
packets to device eth2 for ingress.
<P>
To create egress mirroring from port eth1 to port eth2:
<DL COMPACT><DT><DD>

<P>
tc qdisc add dev eth1 handle ffff: clsact
tc filter add dev eth1 egress                  \
<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;matchall&nbsp;skip_sw&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\
<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;action&nbsp;mirred&nbsp;egress&nbsp;mirror&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\
<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;dev&nbsp;eth2

</DL>

<P>
The first command creates a clsact qdisc with handle
<B>ffff:</B>

on device
<B>eth1</B>

where the second command attaches a matchall filters on it that mirrors the
packets to device eth2 for egress.
<P>
To sample one of every 100 packets flowing into interface eth0 to psample group
12:
<DL COMPACT><DT><DD>

<P>
tc qdisc add dev eth0 handle ffff: ingress
tc filter add dev eth0 parent ffff: matchall \
<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;action&nbsp;sample&nbsp;rate&nbsp;100&nbsp;group&nbsp;12

</DL>

<P>

<A NAME="lbAG">&nbsp;</A>
<H2>SEE ALSO</H2>

<B><A HREF="tc.8.html">tc</A></B>(8),

<P>

<HR>
<A NAME="index">&nbsp;</A><H2>Index</H2>
<DL>
<DT><A HREF="#lbAB">NAME</A><DD>
<DT><A HREF="#lbAC">SYNOPSIS</A><DD>
<DT><A HREF="#lbAD">DESCRIPTION</A><DD>
<DT><A HREF="#lbAE">OPTIONS</A><DD>
<DT><A HREF="#lbAF">EXAMPLES</A><DD>
<DT><A HREF="#lbAG">SEE ALSO</A><DD>
</DL>
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