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Connmark retriever action in tc

Section: Linux (8)
Updated: 11 Jan 2016
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connmark - netfilter connmark retriever action

tc ... action connmark [ zone u16_zone_index ] [ CONTROL ] [ index u32_index ]

CONTROL := { reclassify | pipe | drop | continue | ok }

The connmark action is used to restore the connection's mark value into the packet's fwmark.

zone u16_zone_index

Specify the conntrack zone when doing conntrack lookups for packets. u16_zone_index is a 16bit unsigned decimal value.

CONTROL

How to continue after executing this action.

reclassify: Restarts classification by jumping back to the first filter attached to this action's parent.
pipe: Continue with the next action, this is the default.
drop: shot Packet will be dropped without running further actions.
continue: Continue classification with next filter in line.
pass: Return to calling qdisc for packet processing. This ends the classification process.

index u32_index

Specify an index for this action in order to being able to identify it in later commands. u32_index is a 32bit unsigned decimal value.