From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from xc.sipsolutions.net ([83.246.72.84]:56357 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932358AbZHGSp0 (ORCPT ); Fri, 7 Aug 2009 14:45:26 -0400 Subject: Re: [PATCH] mac80211: allow DMA optimisation From: Johannes Berg To: Ivo van Doorn Cc: John Linville , linux-wireless In-Reply-To: <200908072021.53221.IvDoorn@gmail.com> References: <1249656135.7194.6.camel@johannes.local> <200908071855.38921.IvDoorn@gmail.com> <1249668106.7194.10.camel@johannes.local> <200908072021.53221.IvDoorn@gmail.com> Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-yL+BPR/IAeYTCU9pqIzV" Date: Fri, 07 Aug 2009 20:45:22 +0200 Message-Id: <1249670722.7194.12.camel@johannes.local> Mime-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: --=-yL+BPR/IAeYTCU9pqIzV Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Fri, 2009-08-07 at 20:21 +0200, Ivo van Doorn wrote: > > Initially, yes, but I think we should eventually use it for sending out > > multiple frames after restarting queues etc. For instance after > > scanning, we could send out a bunch of frames at once. >=20 > This would work for PCI devices, but USB devices can spoil the > fun (as usual) because those devices use the queue in the hardware > and you can't control the actual "kick". Sure, but it's meant as an optimisation anyway. johannes --=-yL+BPR/IAeYTCU9pqIzV Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- iQIcBAABAgAGBQJKfHY+AAoJEODzc/N7+QmarNUP/3ExxauIA1G30AUHYApWtV0X ujgWdloRc65PyaG3UeSts+II9I+HsB01ok09I+BwW2SbSg+ArNQOEk/fwkZpWpTu mfBHXjqLfJYZhaS82HBIDs+o8GthJ3s8BosD9mLVG5QwWLyFp7PPbk0InLGFpYW8 S9zSWuOj2B28RSSmOyz+Kst9GnQhtvOdJ4gYrq9tQpXP90H5udVwEG+E1zdoAe+O I+jxp+/WhMfUDr3j2mgZN6Kme+IWWR0ojL6QhgSVUSJdeVia4CT1n7Bkbufjijdp AyYx5sySld5ZKctAE55Ti+XdonJgxxak0g9pU4hr9NpSj766HhbNLhPslzY2IDLL qBsjRe8zV66BDL3Hyh/XnafC+ZbdY8jkcqb14tSPPHHyDjfvCXdMRM1zCKEki538 83Zgi4J3X0Br4VJdxeS0UuylPnJYF5Zm33Eya8zo6+77g/tfxuBgKGc2gJzmxxUi fBqXbvH3YsUHJAvpAXa6eNoKICsUL1QwsC7bHvvSazpcl1NJ481iKVeCF7CBC8Vd pSLdSADlK/2QdP+HOhnooOwVNw/R56U7d2EtdhQEwA2g4oir2h0QoX2IUwSBfnVz waqEBaSDv5ElnbSTXlnW0Cnj0oP6/fDIdHxivnAshu0dYFDz/aNuojn9gZ8VxpB0 NSJBErL5PnNfLVgx4KFh =zpJp -----END PGP SIGNATURE----- --=-yL+BPR/IAeYTCU9pqIzV--