Will set the contention window (cw).
ATLASd requires the libnl-3.0 and libnl-genl-3.0. In Linux Mint, which is based on Ubuntu 14.04, the following command will install all required object code and headers.
sudo apt-get install libnl-3-200 libnl-3-dev libnl-genl-3-200 libnl-genl-3-dev