Universal 32bit comparisons w/ hashing (U32)

modulename: cls_u32.ko

configname: CONFIG_NET_CLS_U32

Linux Kernel Configuration
└─>Networking
└─>Networking options
└─>QoS and/or fair queueing
└─>Universal 32bit comparisons w/ hashing (U32)
In linux kernel since version 2.6.12  
Say Y here to be able to classify packets using a universal
32bit pieces based comparison scheme.

To compile this code as a module, choose M here: the
module will be called cls_u32.

source code: