Match-all classifier in tc(8)

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 action 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: clsact
        tc filter add dev eth1 ingress                \
                matchall skip_sw                      \
                action mirred egress mirror           \
                dev eth2
The first command creates a clsact qdisc with handle ffff: on device eth1 where the second command attaches a matchall filters on it that mirrors the packets to device eth2 for ingress. To create egress mirroring from port eth1 to port eth2:
        tc qdisc add dev eth1 handle ffff: clsact
        tc filter add dev eth1 egress                  \
                matchall skip_sw                       \
                action mirred egress mirror            \
                dev eth2
The first command creates a clsact qdisc with handle ffff: on device eth1 where the second command attaches a matchall filters on it that mirrors the packets to device eth2 for egress. 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),