Metadata

modulename: em_meta.ko

configname: CONFIG_NET_EMATCH_META

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>QoS and/or fair queueing
└─>Metadata
In linux kernel since version 2.6.12  
Say Y here if you want to be able to classify packets based on
metadata such as load average, netfilter attributes, socket
attributes and routing decisions.

To compile this code as a module, choose M here: the
module will be called em_meta.

source code: