Tag driver for Atheros AR9331 SoC with built-in switch

modulename: tag_ar9331.ko

configname: CONFIG_NET_DSA_TAG_AR9331

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>Distributed Switch Architecture
└─>Tag driver for Atheros AR9331 SoC with built-in switch
In linux kernel since version 5.1 (release Date: 2019-05-05)  
Say Y or M if you want to enable support for tagging frames for
the Atheros AR9331 SoC with built-in switch.

source code: