Return-path: Received: from mail.freestuffjunction.co.uk ([109.169.51.71]:18177 "EHLO mail.freestuffjunction.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751326Ab2KFQuX (ORCPT ); Tue, 6 Nov 2012 11:50:23 -0500 Message-ID: <50993FC2.7040100@ehuk.net> (sfid-20121106_175036_072563_743A7A6E) Date: Tue, 06 Nov 2012 16:50:10 +0000 From: Eddie Chapman Reply-To: Eddie Chapman MIME-Version: 1.0 To: Johannes Berg CC: stable@vger.kernel.org, florian@reitmeir.org, linux-wireless@vger.kernel.org, j@w1.fi Subject: Re: Linux 3.6.5 References: <20121031173811.GA12970@kroah.com> <509575F4.5020109@ehuk.net> <20121105081757.GA3730@kroah.com> <50979D38.6010002@ehuk.net> (sfid-20121105_121423_464154_72561532) <1352116868.9466.2.camel@jlt4.sipsolutions.net> <509838F4.4010301@ehuk.net> <1352188621.9440.4.camel@jlt4.sipsolutions.net> <50992E0E.3040606@ehuk.net> <1352217244.9440.16.camel@jlt4.sipsolutions.net> (sfid-20121106_165343_414402_7F00AE58) <1352219976.9440.18.camel@jlt4.sipsolutions.net> In-Reply-To: <1352219976.9440.18.camel@jlt4.sipsolutions.net> Content-Type: text/plain; charset=UTF-8; format=flowed Sender: linux-wireless-owner@vger.kernel.org List-ID: Hi Johannes, On 06/11/12 16:39, Johannes Berg wrote: > On Tue, 2012-11-06 at 16:54 +0100, Johannes Berg wrote: > >>> BSS 82:e1:fa:1a:65:00 (on wlan0) -- associated >> [...] >>> HT operation: >>> * primary channel: 9 >>> * secondary channel offset: above >> >> As you can see, it's using HT40+ on channel 9 (2452 MHz). Your HT40 >> allow (correctly) map showed: >> >> 2452 HT40 - >> >> This is because HT40+ isn't actually allowed on channel 9 by the >> standard (cf. 802.11-2012 Table E-1 (US), E-2 (Europe), E-3 (Japan). > > Oops, no, that is obviously wrong. This is permitted outside the US, and > that is reflected in those tables as well (I was confused). However, > your AP isn't transmitting any info on where it is, and your device is > set up for world roaming (country is "00" rather than a real country). > Thus, channel 13 isn't allowed and you can't do HT40+ on channel 9. In the AP's dmesg output which I included in my other message, I see this: <6>[ 9.300000] cfg80211: Regulatory domain changed to country: GB So it seems the AP knows where it is, but is it not transmitting that to the client? Eddie