Match-all classifier in tc(8) | Linux | 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: 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 device 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¶
21 Oct 2015 | iproute2 |