Intel Corporation
Quantitative exact match distance in network flows

Abstract:

There is disclosed an example of a host computing apparatus, including: an exact match cache (EMC) to perform exact matching according to an exact match tuple; a datapath classifier (DPCLS) to provide wildcard searching in a tuple search space (TSS) including a plurality of subtables, the subtables having one or more rule masks; a controller to receive a first packet having a first property matching a first rule of the classifier table, and forward header data of the packet to a partial rule module (PRM); and the PRM to compute a quantitative distance between the first rule and the exact match tuple of the EMC, and to execute a flow action for the first packet according to the quantitative distance.