CONFIG_IAVF (not configurable)

modulename: iavf.ko

configname: CONFIG_IAVF

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Ethernet driver support
└─>IAVF
In linux kernel since version 4.2 (release Date: 2015-08-30)  
source code:
drivers/net/ethernet/intel/iavf/

is depended by
CONFIG_I40EVF