CONFIG_WIRELESS_EXT (not configurable)

modulename: wireless.ko

and/or

wext.ko

configname: CONFIG_WIRELESS_EXT

Linux Kernel Configuration
└─>Networking
└─>WIRELESS_EXT
In linux kernel since version 2.6.17 (release Date: 2006-06-17)  
source code:
net/core/wireless.c
depends
CONFIG_NET |
NOT | CONFIG_S390 or CONFIG_WIRELESS