Distributed Switch Architecture

modulename: dsa_core.ko

configname: CONFIG_NET_DSA

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Distributed Switch Architecture
In linux kernel since version 2.6.28 (release Date: 2008-12-24)  
Say Y if you want to enable support for the hardware switches supported
by the Distributed Switch Architecture.

source code:
net/dsa/