From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johannes Berg Subject: Re: [PATCH] NET: Multiqueue network device support. Date: Tue, 12 Jun 2007 11:19:57 +0200 Message-ID: <1181639998.29767.59.camel@johannes.berg> References: <1181082517.4062.31.camel@localhost> <4666CEB7.6030804@trash.net> <1181168020.4064.46.camel@localhost> <466D38CF.9060709@trash.net> <1181564611.4043.220.camel@localhost> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-u2KMVWGaoFH5YxePNudJ" Cc: Patrick McHardy , "Waskiewicz Jr, Peter P" , davem@davemloft.net, netdev@vger.kernel.org, jeff@garzik.org, "Kok, Auke-jan H" To: hadi@cyberus.ca Return-path: Received: from crystal.sipsolutions.net ([195.210.38.204]:49028 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751216AbXFLJTs (ORCPT ); Tue, 12 Jun 2007 05:19:48 -0400 In-Reply-To: <1181564611.4043.220.camel@localhost> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org --=-u2KMVWGaoFH5YxePNudJ Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Mon, 2007-06-11 at 08:23 -0400, jamal wrote: > On Mon, 2007-11-06 at 13:58 +0200, Patrick McHardy wrote: >=20 > > Thats not true. Assume PSL has lots of packets, PSH is empty. We > > fill the PHL queue until their is no room left, so the driver > > has to stop the queue.=20 >=20 > Sure. Packets stashed on the any DMA ring are considered "gone to the > wire". That is a very valid assumption to make. Not at all! Packets could be on the DMA queue forever if you're feeding out more packets. Heck, on most wireless hardware packets can even be *expired* from the DMA queue and you get an indication that it was impossible to send them. johannes --=-u2KMVWGaoFH5YxePNudJ Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Comment: Johannes Berg (powerbook) iD8DBQBGbmU9/ETPhpq3jKURAkYIAJ9o0euf6Fm9zFdWUiZwYXae+OCtLACffkzk oP9QUkfNtjJeX75JMHQ6AtY= =0UcE -----END PGP SIGNATURE----- --=-u2KMVWGaoFH5YxePNudJ--