Give Internet Connectivity to the router
Install wireless-tools and kmod-madwifi.
root@rs:~# opkg update root@rs:~# opkg install kmod-madwifi root@rs:~# wifi detect |grep -v disabled > /etc/config/wireless
To enable wifi delete or set disabled to 0 on /etc/config/wireless and
root@rs:~# wifi
References:
http://wiki.openwrt.org/doc/uci/wireless#madwifi.options
OpenWrt MadWiFi ...