Generic IEEE 802.11 Networking Stack (mac80211)

modulename: mac80211.ko

configname: CONFIG_MAC80211

Linux Kernel Configuration
└─>Networking support
└─>Wireless
└─>Generic IEEE 802.11 Networking Stack (mac80211)
In linux kernel since version 2.6.22 (release Date: 2007-07-08)  
This option enables the hardware independent IEEE 802.11
networking stack.

source code:
net/mac80211/