Return-path: Received: from xc.sipsolutions.net ([83.246.72.84]:44673 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752504AbZCZILj (ORCPT ); Thu, 26 Mar 2009 04:11:39 -0400 Subject: Re: wireless powersaving (in NM?) From: Johannes Berg To: "Luis R. Rodriguez" Cc: Dan Williams , "Guy, Wey-Yi W" , linux-wireless , Kalle Valo , Matthew Garrett , Marcel Holtmann , Jouni Malinen In-Reply-To: <43e72e890903260100w75896d0fi9121f227cc7ca8dc@mail.gmail.com> (sfid-20090326_090603_527463_A3630685) References: <1237891149.4320.73.camel@johannes.local> <1237910398.9082.7.camel@localhost.localdomain> <1237979070.4320.156.camel@johannes.local> <1237995072.18896.9.camel@localhost.localdomain> <1237996137.4320.161.camel@johannes.local> <43e72e890903260100w75896d0fi9121f227cc7ca8dc@mail.gmail.com> (sfid-20090326_090603_527463_A3630685) Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-RkK1WTad94jK2mtl7t/O" Date: Thu, 26 Mar 2009 09:11:00 +0100 Message-Id: <1238055060.4331.1.camel@johannes.local> (sfid-20090326_091143_315952_8D3CF004) Mime-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: --=-RkK1WTad94jK2mtl7t/O Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Thu, 2009-03-26 at 01:00 -0700, Luis R. Rodriguez wrote: > > Right. If a particular chipset doesn't properly supported PS then we > > shouldn't actually support it at all -- but we cannot know if the AP is > > broken. >=20 > How about leaving it to the supplicant to guess if the AP is borked or no= t. >=20 > Kalle, what would happen with these broken APs? We talked about that briefly yesterday -- it's not very easy to determine this because of the various ways things break: * one AP sets the broadcast/multicast bit one beacon too late (after having already sent the frames) * one AP doesn't buffer frames at all * one AP doesn't respond to PS-poll frames etc. johannes --=-RkK1WTad94jK2mtl7t/O Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Comment: Johannes Berg (powerbook) iQIcBAABAgAGBQJJyziRAAoJEKVg1VMiehFYMyAQAIZPj71u9uF4ifpEK8si7Ffz yVwNObjr/L5vfRG1w4VD6bGjzh3spQ5GttPUfhasvE4tG5JcuD0eQsyAGTdWzani 5Ajxw+I0HyUdRFJr9D2tRl6oAOEwxUPqresqD+p6yzDbTTRWPwBA1I8PSgyz02yh dlaDDrJ+lpbFpuwWOQNqZ07QwBt+E3KFS2HAxhMW+vJ7r+lwAQKw6ye5CLX2bDPW blXOQo0hjSQZ0bLbdju6axx19g/7ijf2hgAzOKEy0T6hNnXvGVU2YaevErYfkAum NO5SzQddAdT+Z3aXTA+FAFk5PYfrdx1kZ4ziB56zCGvUya6kl9iHccqas6T5xIW4 UQ4Qko1JwyB1X0QtAuClPhDsZElxvxjbTKZ55un17osLfTnobVtqPcBdfi16TjaK i2cAyH8s8scUVowaMd7f0aiX9WbtKnwk9O1Xa9+96XCLW+SPt+3jjI8I8hpmAQXD zquSrOaZG3f6lZGfZzoYLpEmMSNBFhejoT9vI0zHWohk7NJ/fzlDbWcIWWo+fUtG 7SjALJKDqHm6023Dx0rbozeXn2XXCO0v3q9+B6i6Yoc00TRejh7CAugRoSOs6U1g e4vm/wUCy61bQ9qAChY/HG/STsbMUuqs4g6qaR3CU2PT+EQgfFJIK8adCrPF6FZj akISYDBlZCpMk0lONLjJ =xfYL -----END PGP SIGNATURE----- --=-RkK1WTad94jK2mtl7t/O--