# man > tc-matchall(8)

_Match-all_ _classifier_ _in_ [_tc_(8)](https://www.chedong.com/phpMan.php/man/tc/8/markdown)                   Linux                  _Match-all_ _classifier_ _in_ [_tc_(8)](https://www.chedong.com/phpMan.php/man/tc/8/markdown)

## NAME
       matchall - traffic control filter that matches every packet

## SYNOPSIS
       **tc filter **... **matchall **[ **skip_sw **| **skip_hw  **] [ **action _**ACTION_SPEC_ ] [ **classid _**CLASSID_ ]

## DESCRIPTION
       The  **matchall **filter allows one to classify every packet that flows on the port and run a ac‐
       tion on it.

## OPTIONS
       **action _**ACTION_SPEC_
              Apply an action from the generic actions framework on matching packets.

       **classid _**CLASSID_
              Push matching packets into the class identified by _CLASSID_.

### skip_sw
              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.

### skip_hw
              Do not process filter by hardware.

## EXAMPLES
       To create ingress mirroring from port eth1 to port eth2:

              tc qdisc  add dev eth1 handle ffff: ingress
              tc filter add dev eth1 parent ffff:           \
                      matchall skip_sw                      \
                      action mirred egress mirror           \
                      dev eth2

       The first command creates an ingress qdisc with handle **ffff: **on device **eth1 **where the  second
       command attaches a matchall filters on it that mirrors the packets to device eth2.

       To create egress mirroring from port eth1 to port eth2:

              tc qdisc add dev eth1 handle 1: root prio
              tc filter add dev eth1 parent 1:               \
                      matchall skip_sw                       \
                      action mirred egress mirror            \
                      dev eth2

       The  first command creates an egress qdisc with handle **1: **that replaces the root qdisc on de‐
       vice **eth1 **where the second command attaches a matchall filters on it that mirrors the packets
       to device eth2.

       To sample one of every 100 packets flowing into interface eth0 to psample group 12:

              tc qdisc add dev eth0 handle ffff: ingress
              tc filter add dev eth0 parent ffff: matchall \
                   action sample rate 100 group 12


## SEE ALSO
       [**tc**(8)](https://www.chedong.com/phpMan.php/man/tc/8/markdown),

iproute2                                     21 Oct 2015               _Match-all_ _classifier_ _in_ [_tc_(8)](https://www.chedong.com/phpMan.php/man/tc/8/markdown)