From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shirley Ma Subject: Re: macvtap: Limit packet queue length Date: Thu, 22 Jul 2010 09:05:26 -0700 Message-ID: <1279814726.3211.5.camel@localhost.localdomain> References: <20100722064157.GA25913@gondor.apana.org.au> <20100722074431.GA26744@gondor.apana.org.au> <201007221130.53612.arnd@arndb.de> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Cc: Herbert Xu , "David S. Miller" , netdev@vger.kernel.org, Mark Wagner , Chris Wright To: Arnd Bergmann Return-path: Received: from e8.ny.us.ibm.com ([32.97.182.138]:50282 "EHLO e8.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753155Ab0GVQGx (ORCPT ); Thu, 22 Jul 2010 12:06:53 -0400 Received: from d01relay03.pok.ibm.com (d01relay03.pok.ibm.com [9.56.227.235]) by e8.ny.us.ibm.com (8.14.4/8.13.1) with ESMTP id o6MG4kG4028605 for ; Thu, 22 Jul 2010 12:04:46 -0400 Received: from d03av03.boulder.ibm.com (d03av03.boulder.ibm.com [9.17.195.169]) by d01relay03.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id o6MG6ptj353270 for ; Thu, 22 Jul 2010 12:06:51 -0400 Received: from d03av03.boulder.ibm.com (loopback [127.0.0.1]) by d03av03.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id o6MG5c5H026382 for ; Thu, 22 Jul 2010 10:05:39 -0600 In-Reply-To: <201007221130.53612.arnd@arndb.de> Sender: netdev-owner@vger.kernel.org List-ID: On Thu, 2010-07-22 at 11:30 +0200, Arnd Bergmann wrote: > In the TX direction, we really don't queue, since we simply forward > to the lowerdev tx queue, so exposing the tunable to user space > as the tx queue length is a little bit awkward, as well as > inconsistent > between macvtap and macvlan. Maybe we can use lowerdev backlog queue size here from receiving path here? thanks Shirley