CONFIG_LIBIPW (not configurable)

modulename: libipw.ko

configname: CONFIG_LIBIPW

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Wireless LAN
└─>LIBIPW
In linux kernel since version 2.6.29 (release Date: 2009-03-23)  
This option enables the hardware independent IEEE 802.11
networking stack. This component is deprecated in favor of the
mac80211 component.

source code:
drivers/net/wireless/ipw2x00/