NFC hardware simulator driver

modulename: nfcsim.ko

configname: CONFIG_NFC_SIM

Linux Kernel Configuration
└─>Networking support
└─>NFC subsystem support
└─>Near Field Communication (NFC) devices
└─>NFC hardware simulator driver
In linux kernel since version 3.11 (release Date: 2013-09-02)  
This driver declares two virtual NFC devices supporting NFC-DEP
protocol. An LLCP connection can be established between them and
all packets sent from one device is sent back to the other, acting as
loopback devices.

If unsure, say N.

source code: