CONFIG_STP (not configurable)

modulename: stp.ko

configname: CONFIG_STP

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>STP
In linux kernel since version 2.6.27 (release Date: 2008-10-09)  
source code:
net/802//stp.c
selects
CONFIG_LLC

depends
CONFIG_NET

is depended by
CONFIG_BRIDGE