Rocker devices

configname: CONFIG_NET_VENDOR_ROCKER

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Ethernet driver support
└─>Rocker devices
In linux kernel since version 3.19 (release Date: 2015-02-08)  
If you have a network device belonging to this class, say Y.

Note that the answer to this question doesn't directly affect the
kernel: saying N will just cause the configurator to skip all
the questions about Rocker devices. If you say Y, you will be asked for
your specific card in the following questions.