From: "John W. Linville" <linville@tuxdriver.com>
To: Arnau Roig <arnau60@casal.upc.edu>
Cc: linux-wireless@vger.kernel.org
Subject: Re: txpower and frequency settings: concept guidance needed
Date: Tue, 10 Feb 2009 09:10:46 -0500 [thread overview]
Message-ID: <20090210141045.GA3534@tuxdriver.com> (raw)
In-Reply-To: <20090205164522.GA5580@purple>
On Thu, Feb 05, 2009 at 05:45:22PM +0100, Arnau Roig wrote:
> Hello to everybody.
>
> I'm new in kernel development and in wireless networking also.
> I've read most of the documentation availible in wireless.kernel.org
> and, to be honest it's still not clear to me what are the uses of the
> mac80211, cfg80211 or nl80211.
mac80211 implements the higher level MAC layer function of the
ieee802.11 specification for wireless local area networking.
cfg80211 provides the back-end of a configuration API for wireless
LAN devices -- it is intended to supercede the Wireless Extensions
API at the device layer. nl80211 is a front-end to cfg80211 that
is based on netlink sockets. This provides a user-level API for
wireless configuration.
> I'm using a 2.6.24 kernel, compat-wireless-2.6-old (compat-release
> v4.5-g2badec7) and ath5k driver (v0.5.0).
>
> What I want to do is a userspace application that has to modify the
> frequency channel and the tx_power of the wireless device depending on
> several network statistics. Please, where do I have to start looking?
>
> Is the struct ieee80211_conf, declared in mac80211.h what I need for
> changing the current working channel and tx_power?
> Can I read network statistics with get_station, declared in the struct
> cfg80211_ops in cfg80211.h? Or the way to do it is using
> @NL80211_CMD_GET_WIPHY in nl80211_commands?
You may want to take a look at the sources for the iw utility.
This should illustrate how to drive the nl80211 API.
> Thank you for your time.
Hth!
John
--
John W. Linville Someday the world will need a hero, and you
linville@tuxdriver.com might be all we have. Be ready.
prev parent reply other threads:[~2009-02-10 14:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-05 16:45 txpower and frequency settings: concept guidance needed Arnau Roig
2009-02-10 12:41 ` Arnau Roig
2009-02-10 14:10 ` John W. Linville [this message]
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