Extended Matches

modulename: ematch.ko

configname: CONFIG_NET_EMATCH

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>QoS and/or fair queueing
└─>Extended Matches
In linux kernel since version 2.6.12  
Say Y here if you want to use extended matches on top of classifiers
and select the extended matches below.

Extended matches are small classification helpers not worth writing
a separate classifier.

You must have a recent version of the iproute2 tools in order to use
extended matches.

source code: