Realtek Ethernet switch family support


Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Distributed Switch Architecture drivers
└─>Realtek Ethernet switch family support
In linux kernel since version 5.2 (release Date: 2019-07-07)  
Select to enable support for Realtek Ethernet switch chips.

Note that at least one interface driver must be enabled for the
subdrivers to be loaded. Moreover, an interface driver cannot achieve
anything without at least one subdriver enabled.