Return-path: Received: from xc.sipsolutions.net ([83.246.72.84]:44214 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751634AbZKPSHE (ORCPT ); Mon, 16 Nov 2009 13:07:04 -0500 Subject: Re: compat-wireless and minstrel From: Johannes Berg To: Adam Wozniak Cc: Christian Lamparter , Derek Smithies , linux-wireless@vger.kernel.org, nbd@openwrt.org In-Reply-To: <4B0192A6.9050808@irobot.com> References: <4AF0D54D.4090303@irobot.com> <4AFC655A.5020706@irobot.com> <200911122103.27455.chunkeey@googlemail.com> <4AFC8E4F.5090307@irobot.com> <4AFC8F0D.5020700@irobot.com> <1258097352.3899.75.camel@johannes.local> <4AFDDF19.8060202@irobot.com> <1258191039.6167.40.camel@johannes.local> <4B018B26.2070008@irobot.com> <1258392453.32159.28.camel@johannes.local> <4B0192A6.9050808@irobot.com> Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-/0X5TYV6XWhNb2DefC3V" Date: Mon, 16 Nov 2009 19:07:07 +0100 Message-ID: <1258394827.32159.34.camel@johannes.local> Mime-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: --=-/0X5TYV6XWhNb2DefC3V Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Mon, 2009-11-16 at 09:57 -0800, Adam Wozniak wrote: > This assumption seems too stoichastic. Reading 802.11-2007 section=20 > 11.1.2.2, it doesn't seem that we're guaranteed to always receive=20 > beacons from all stations. Stations will cancel their pending beacon=20 > transmission if they receive a beacon before their random delay times=20 > out. In the extreme case where the number of stations is very large, it=20 > seems possible that you may never hear beacons for some stations. That is indeed possible, shouldn't happen in the scenario you were outlining (three stations) though. It's more likely that one of them doesn't implement beaconing correctly. It would make sense either way though to send probe requests and reacting to them and probe responses, if you want to implement that. johannes --=-/0X5TYV6XWhNb2DefC3V Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- iQIcBAABAgAGBQJLAZTCAAoJEODzc/N7+Qma4FAP/2fh1RBrJlMqNziL2M+7iPfV JxZOP/5cGDrZP03E5F9JlMFXprxvqaZKI7XjFgdAFmrXQAiCy3N0DJrZDJ3LZGhW ExQBUFzjEdUs4pGI6V2/VszgpZXBmyHcHN4G3g/Qu3hPwrC84Uo6ExRlJvqZ1DOl VrvKUb9T48RlmJ+YzE/2ZWe9gjX/BlcBaYbmpvKUuw+pRuMsGsTAgfn1KfGp5eD7 ZkCV3JcBBXQ7xx3kbOldMoowDVkoIRSmdQeg9LkEr9oD6x+i3U2tItFYMUfQSgVH ftcjvn4BP8/7ButH/0YCqFYff3+iw6j0QHdzxGfN0UhS29cW7Jxakf9nvfJTtLIQ URJktTNTeOn1T2ZynJ293h/8rjONstcYGBrINIdQggqFxUPUPpJhQ73ApuP+K0qT nIfA2cG07V/WsgUR9LxNSikIc1d87w6XI2P/PdktKQDNsTwrpxHkRzTuWs3mjuma sDc+MVa78DDRBNoDSapLPROEXoA3cfJwwT8jpHpsJLEWseU/hmH14WlV3MeSFV+j G+mLpwoCtzA4KsIrReiFfk1kY3HO0b8TPF8iMe+KjDkuVnWEg5VaCW0a8mXRsZ7a 3LJJU/ZVVgnJdVsASgxhQoAzI+kRyhzpHRaZpXDeOKMUACoCq9WmJft1LRyFo2Ib X7+nNNkgwe14TqZTimkr =vDYq -----END PGP SIGNATURE----- --=-/0X5TYV6XWhNb2DefC3V--