modulename: act_api.ko

configname: CONFIG_NET_CLS_ACT

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>QoS and/or fair queueing
└─>Packet ACTION
In linux kernel since version 2.6.12  
This option requires you have a new iproute2. It enables
tc extensions which can be used with tc classifiers.
You MUST NOT turn this on if you dont have an update iproute2.

source code: