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The WiFi settings are configured in the file \texttt{/etc/config/wireless}
(currently supported on Broadcom and Atheros). When booting the router for the first time
it should detect your card and create a sample configuration that looks like this:
\paragraph{Sample Broadcom wireless config:}
\begin{Verbatim}
config wifi-device "wl0"
option type "broadcom"
option channel "5"
config wifi-iface
option device "wl0"
option mode "ap"
option ssid "OpenWrt"
option hidden "0"
option encryption "none"
\end{Verbatim}
\paragraph{Sample Atheros wireless config:}
\begin{Verbatim}
config wifi-device "wifi0"
option type "atheros"
option channel "5"
option mode "11g"
config wifi-iface
option device "wifi0"
option mode "ap"
option ssid "OpenWrt"
option hidden "0"
option encryption "none"
\end{Verbatim}
There are two types of config sections in this file. The '\texttt{wifi-device}' refers to
the physical wifi interface and '\texttt{wifi-iface}' configures a virtual interface on top
of that (if supported by the driver).
\paragraph{Options for the \texttt{wifi-device}:}
\begin{itemize}
\item \texttt{type} \\
The driver to use for this interface.
\item \texttt{mode} \\
The frequency band (\texttt{b}, \texttt{g}, \texttt{bg}, \texttt{a})
\item \texttt{country} \\
The country code used to determine the regulatory settings.
\item \texttt{channel} \\
The wifi channel (e.g. 1-14, depending on your country setting).
\item \texttt{maxassoc} \\
Maximum number of associated clients
\end{itemize}
\paragraph{Options for the \texttt{wifi-iface}:}
\begin{itemize}
\item \texttt{mode} \\
Operating mode:
\begin{itemize}
\item \texttt{ap} \\
Access point mode
\item \texttt{sta} \\
Client mode
\item \texttt{adhoc} \\
Ad-Hoc mode
\item \texttt{wds} \\
WDS point-to-point link
\end{itemize}
\item \texttt{network} \\
Selects the interface section from \texttt{/etc/config/network} to be
used with this interface
\item \texttt{encryption} \\
Encryption setting. Accepts the following values:
\begin{itemize}
\item \texttt{psk}, \texttt{psk2} \\
WPA(2) Pre-shared Key
\item \texttt{wpa}, \texttt{wpa2} \\
WPA(2) RADIUS
\end{itemize}
\item \texttt{key} (wpa and psk) \\
Either the WPA key (PSK mode) or the RADIUS shared secret (WPA RADIUS mode)
\item \texttt{server} (wpa) \\
The RADIUS server address
\item \texttt{port} (wpa) \\
The RADIUS server port
\end{itemize}
\paragraph{Limitations:}
Only the following mode combinations are supported:
\begin{itemize}
\item \textbf{Broadcom}: \\
\begin{itemize}
\item 1x \texttt{sta}, 0-3x \texttt{ap}
\item 1-4x \texttt{ap}
\item 1x \texttt{adhoc}
\end{itemize}
WDS links can only be used in pure AP mode and can't use WEP (except when sharing the
settings with the master interface, which is done automatically).
\item \textbf{Atheros}: \\
\begin{itemize}
\item 1x \texttt{sta}, 0-4x \texttt{ap}
\item 1-4x \texttt{ap}
\item 1x \texttt{adhoc}
\end{itemize}
\end{itemize}
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