CONFIG_IWLWIFI_LEGACY (not configurable)

modulename: iwl-legacy.ko

configname: CONFIG_IWLWIFI_LEGACY

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Wireless LAN
└─>IWLWIFI_LEGACY
In linux kernel since version 2.6.39 (release Date: 2011-05-18)  
source code:
drivers/net/wireless/iwlegacy/