CONFIG_NET_DSA (not configurable)

modulename: dsa_core.ko

configname: CONFIG_NET_DSA

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>NET_DSA
In linux kernel since version 2.6.28 (release Date: 2008-12-24)  
source code:
net/dsa/
selects
CONFIG_PHYLIB