Execute BPF program as route nexthop action

modulename: lwt_bpf.ko

configname: CONFIG_LWTUNNEL_BPF

Linux Kernel Configuration
└─>Networking support
└─>Execute BPF program as route nexthop action
In linux kernel since version 4.1 (release Date: 2015-06-21)  
Allows to run BPF programs as a nexthop action following a route
lookup for incoming and outgoing packets.

source code:
net/core/lwt_bpf.c