Return-path: Received: from fk-out-0910.google.com ([209.85.128.190]:5702 "EHLO fk-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754140AbYJPAfr (ORCPT ); Wed, 15 Oct 2008 20:35:47 -0400 Received: by fk-out-0910.google.com with SMTP id 18so2901844fkq.5 for ; Wed, 15 Oct 2008 17:35:45 -0700 (PDT) Message-ID: <1ba2fa240810151735t100ceda5s7fe7b495f735c507@mail.gmail.com> (sfid-20081016_023606_449207_4346642C) Date: Thu, 16 Oct 2008 02:35:44 +0200 From: "Tomas Winkler" To: "Luis R. Rodriguez" Subject: Re: New Regulatory Domain Api. Cc: "Luis Rodriguez" , "Marcel Holtmann" , "Johannes Berg" , "John W. Linville" , "Zhu Yi" , "Kolekar, Abhijeet" , "linux-wireless@vger.kernel.org" In-Reply-To: <20081015170830.GA15902@tesla> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 References: <1224019662.3027.13.camel@johannes.berg> <1224086374.735.4.camel@johannes.berg> <1224091577.28173.9.camel@californication> <43e72e890810151039s34ad8d79nd2744847dd254b4e@mail.gmail.com> <1224092868.28173.21.camel@californication> <20081015112517.GF6509@tesla> <1224098748.28173.32.camel@californication> <20081015131622.GH6509@tesla> <1ba2fa240810151631t37edc367hfe59c76926c7b82e@mail.gmail.com> <20081015170830.GA15902@tesla> Sender: linux-wireless-owner@vger.kernel.org List-ID: On Wed, Oct 15, 2008 at 7:08 PM, Luis R. Rodriguez wrote: > On Wed, Oct 15, 2008 at 04:31:20PM -0700, Tomas Winkler wrote: >> On Wed, Oct 15, 2008 at 3:16 PM, Luis R. Rodriguez >> wrote: >> > On Wed, Oct 15, 2008 at 12:25:48PM -0700, Marcel Holtmann wrote: >> >> > The problem here is not this though the problem here is the case >> >> > where people are using 2.6.28 without no iw or crda *and* have more >> >> > than two cards :) >> >> >> >> it might sound like an unlikely case and it will most likely only be the >> >> A-band usage anyway, but it is a valid case. People with old laptops do >> >> use newer wireless cards in PCMCIA or USB form factor to get better WiFi >> >> performance and/or stability. In some cases you can just replace your >> >> internal card, but with the switch from MiniPCI to half-MiniPCI this is >> >> not as likely anymore. So the use of a second external card becomes more >> >> likely. >> > >> > Right, and the proposed solution I had was to use an intersection >> > between two regulatory domains. This solution just doesn't currently >> > work well with Intel cards due to the capability <-> regulatory one to >> > one mapping. >> >> This might be viewed this way but this is not concept behind it. >> First Intel HW enforce regulatory domain written in the EEPROM, which >> makes it in your sense capability even it's not. > > I see. > >> Second Intel uses special regulatory domains called MOW1 and MOW2 >> (most of the world 1 and 2) + possible restriction to BG. These 3 >> domains/capabilities should be restrictive enough comply with most of >> the world regulatory restrictions. > > Well to meet your current SKUs requirements :) > >> There is no real hint for specific >> regulatory domain that can be applied form this, the concept is that >> you should be move relatively freely around the globe without changing >> anything. > > The issue was your single band cards do not store 5 GHz band regulatory > information. Is this MOW1 or MOW2? Don't understand the question, the 5GHz channels are disabled that's all you can read from there. > >> You really have to use some other source to specify regulatory domain >> it's cannot be retrieved from the MOW SKU's. > > Right, do you have any other source for location or that you can > make this implication from your devices? No, you cannot guess that. > >> The only exception in >> Intel cards are JP and KR SKU's which are real regulatory domains. > > What makes them "real" BTW? They are regulatory domains in the sens you defining them. >> Just my two cents, probably didn't help to solve the problem, > > It certainly helps more understand your situation. I had no idea > of MOW1 and MOW2. Can this be documented as part of the > regulatory_hint() code changes which will be added? I've just checked current docs and from 5000 on inclusively there are only 3 SKU's MOW, ABG (no N) and BG. All others were depreciated. Tomas