CONFIG_CHELSIO_LIB (not configurable)

modulename: libcxgb.ko

configname: CONFIG_CHELSIO_LIB

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Ethernet driver support
└─>CHELSIO_LIB
In linux kernel since version 4.1 (release Date: 2015-06-21)  
Common library for Chelsio drivers.

source code: