Network physical/parent device Netlink interface

modulename: devlink.ko

configname: CONFIG_NET_DEVLINK

Linux Kernel Configuration
└─>Networking support
└─>Network physical/parent device Netlink interface
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Network physical/parent device Netlink interface provides
infrastructure to support access to physical chip-wide config and
monitoring.

source code:
net/core/devlink.c
depends
CONFIG_NET