From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from xc.sipsolutions.net ([83.246.72.84]:59459 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757121AbZEDPd1 (ORCPT ); Mon, 4 May 2009 11:33:27 -0400 Subject: Re: IEEE80211 Acknowledgement From: Johannes Berg To: Ivo van Doorn Cc: Alexandre Becholey , linux-wireless@vger.kernel.org In-Reply-To: <200905041729.13805.IvDoorn@gmail.com> References: <49FF06BB.2090106@shockfish.com> <200905041729.13805.IvDoorn@gmail.com> Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-lFn9Uqrf+H/g+03Kp4sD" Date: Mon, 04 May 2009 17:32:54 +0200 Message-Id: <1241451174.8683.48.camel@johannes.local> Mime-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: --=-lFn9Uqrf+H/g+03Kp4sD Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Mon, 2009-05-04 at 17:29 +0200, Ivo van Doorn wrote: > Hi, >=20 > Just as side information for other readers: >=20 > Alexandre is looking into the problem of rt2500usb/rt73usb and > possibly other USB drivers, that they cannot report the ACK status > of frames to mac80211 which is problematic for hostapd. I realise that this probably doesn't help and is tangential to the question being asked, but I do not think processing ACK frames in software is possible for this, since the software does not know which frame was transmitted, due to four queues being used, and retries etc. johannes --=-lFn9Uqrf+H/g+03Kp4sD Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Comment: Johannes Berg (powerbook) iQIcBAABAgAGBQJJ/wqjAAoJEKVg1VMiehFYKz8P/0wPfnwGJEtHM/Cx6LVeqtFw ReFkmrMiBX9RxWJh4LqleqzpQ/0Pi2xbnjvJsc53TBjpbMXeK2Qf+IAnPPbqshSD XkTwIFap/UaSEZDVwHMfSz+P8YLJHhG2+sJajyQVyol6vUu+Y7MTaPW5mvVzlVUu zIy2HOI54BA61hfCZ0mf/40vNTlWnueasQ9Nxaxwh96ksb6wcaEyrLFf8U7k9Kzu bHnPSOpy9i8UkUAhgVooBv1gS+M9VjOHtrZ6W46l9LGyeSrIdHkuCDthEusSqdIM f1lvLcICVBDIyMgCFeRszPJdKIDWezQb1FVL0J1/vOaSuvdRh2mVbBS4SJTtkX2y lfoaBlVS1dPFtFbjf7KLYHeMvvxdy/kRUng//lztfEqiGb7JXj/CP0oFHGt3SqVm zkfUV89T8ix5PFPIePMcOYKKwFV3p1EhmErkCSdyYxXhLoY7dtAmrIe3AkYlJIfr 4nEQeIjRKZi39v5YfycC9YKk+hdiqrLuC9cxRvEXiuCdOIjidvSYtZ1akzi5xILE p2shWOaBtvww+l7qSiChEUZBd3X7XZ8sbkkNqpdL6Dey3FlKhbzPfs1LimDIoUUg D4otTA32C/4JwzZCWhCg6VDOeahjpUKNdGEIaGw22Gm006b4LEb8rv0bJYAziZvZ YSUrx/+RG2d4cU+7C8ys =SzdX -----END PGP SIGNATURE----- --=-lFn9Uqrf+H/g+03Kp4sD--