From mboxrd@z Thu Jan 1 00:00:00 1970 From: Herbert Xu Subject: Re: [RFC PATCH 00/17] virtual-bus Date: Fri, 3 Apr 2009 19:48:28 +0800 Message-ID: <20090403114828.GA10465@gondor.apana.org.au> References: <20090402085253.GA29932@gondor.apana.org.au> <49D47F11.6070400@redhat.com> <49D5EBE1.8030200@redhat.com> <49D5ED11.2000800@redhat.com> <20090403111242.GA10200@gondor.apana.org.au> <49D5F6FC.5090401@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Gerd Hoffmann , ghaskins@novell.com, anthony@codemonkey.ws, andi@firstfloor.org, linux-kernel@vger.kernel.org, agraf@suse.de, pmullaney@novell.com, pmorreale@novell.com, rusty@rustcorp.com.au, netdev@vger.kernel.org, kvm@vger.kernel.org To: Avi Kivity Return-path: Received: from rhun.apana.org.au ([64.62.148.172]:47231 "EHLO arnor.apana.org.au" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1762074AbZDCLsq (ORCPT ); Fri, 3 Apr 2009 07:48:46 -0400 Content-Disposition: inline In-Reply-To: <49D5F6FC.5090401@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On Fri, Apr 03, 2009 at 02:46:04PM +0300, Avi Kivity wrote: > > The host writes the packet to tap, at which point it is consumed from > its point of view. The host would like to mention that if there was an > API to notify it when the packet was actually consumed, then it would > gladly use it. Bonus points if this involves not copying the packet. We're using write(2) for this, no? That should invoke netif_rx_ni which blocks until the packet is "processed", which usually means that it's placed on the NIC's hardware queue. Cheers, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt