Textsearch

modulename: em_text.ko

configname: CONFIG_NET_EMATCH_TEXT

Linux Kernel Configuration
└─>Networking
└─>Networking options
└─>QoS and/or fair queueing
└─>Textsearch
In linux kernel since version 2.6.13 (release Date: 2005-08-28)  
Say Y here if you want to be able to classify packets based on
textsearch comparisons.

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

source code: