Realtek SMI Ethernet switch family support

modulename: realtek-smi.ko

and/or

realtek.ko

configname: CONFIG_NET_DSA_REALTEK_SMI

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Distributed Switch Architecture drivers
└─>Realtek SMI Ethernet switch family support
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This enables support for the Realtek SMI-based switch
chips, currently only RTL8366RB.

source code:
drivers/net/dsa/