Tag driver for SMSC/Microchip LAN9303 family of switches

modulename: tag_lan9303.ko

configname: CONFIG_NET_DSA_TAG_LAN9303

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Distributed Switch Architecture
└─>Tag driver for SMSC/Microchip LAN9303 family of switches
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Say Y or M if you want to enable support for tagging frames for the
SMSC/Microchip LAN9303 family of switches.

source code:
net/dsa/tag_lan9303.c