Subject: Re: New Regulatory Domain Api.
From: Marcel Holtmann <holtmann@linux.intel.com>
To: "Luis R. Rodriguez" <lrodriguez@atheros.com>
Cc: Zhu Yi <yi.zhu@intel.com>,
	Johannes Berg <johannes@sipsolutions.net>,
	Luis Rodriguez <Luis.Rodriguez@atheros.com>,
	Tomas Winkler <tomasw@gmail.com>,
	"John W. Linville" <linville@tuxdriver.com>,
	"Kolekar, Abhijeet" <abhijeet.kolekar@intel.com>,
	"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
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Date: Tue, 21 Oct 2008 08:07:32 +0200
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Hi Luis,

> >> The proper solution is to either add 5 GHz regulatory rules to your
> >> regulatory_hint() and/or rely on crda to enable the 5 GHz channels
> >> required for the country the user is in. It is true that you need
> >> manual intervention and the way I am trying to resolve that is not by
> >> changing the design of the current regulatory infrastructure, instead
> >> I want to add country selection support to say wpa_supplicant or
> >> Network Manager. That, IMO, is how to address the problem correctly. I
> >> also suggested a temporary solution which a distribution can use which
> >> requires absolutely no manual user intervention, that of determining
> >> the country through whatever means the distribution deems more fit and
> >> calling iw reg set on $COUNTRY.
> >
> > See Marcel's comment on supporting new kernels with old applications.
> 
> Old userspace still works, we can however require new userspace for
> new features. A compliant regulatory infrastructure is a feature.

how does an old userspace with a new kernel works? If we essentially
disable hardware by not having the userspace in place, then that is not
a solution. We have to be able to install a new or development kernel on
an old distro without having to install crda/iw or updating udev or
whatever.

Regards

Marcel