[PATCH 1/4] hostapd: add config option for dfs channels

[Helmut Schaa]

On Wed, Feb 5, 2014 at 6:10 PM, Simon Wunderlich <sw at simonwunderlich.de> wrote:
> From: Simon Wunderlich <siwu at hrz.tu-chemnitz.de>
>
> Different channels allow different transmission power, at least in ETSI
> countries. Also, ETSI requires a "channel plan" for DFS operation, and
> channels should be randomly choosen from these channels.
>
> Add a channel list configuration option for users to add channels
> hostapd may pick from.
>
> Signed-hostap: Simon Wunderlich <sw at simonwunderlich.de>
> ---

[...]

> diff --git a/hostapd/hostapd.conf b/hostapd/hostapd.conf
> index da7817f..7591663 100644
> --- a/hostapd/hostapd.conf
> +++ b/hostapd/hostapd.conf
> @@ -140,6 +140,12 @@ channel=1
>  # Defaults:
>  #acs_num_scans=5
>
> +# DFS Channels. This option allows hostapd to select on of the provided
> +# DFS Channels when the current channels becomes unavailable due to
> +# radar interference. Only useful when ieee80211h=1 is set.
> +# Default: not set
> +#dfs_chanlist=100 104 108 112 116
> +

Would it make sense to also use this for automatic channel selection?
So, instead of just using it for DFS channel switching we might use the
same list to restrict ACS to a subset of channels?
In that case however this should have a more generic name like "chanlist".

Helmut