From patchwork Wed Jun 28 19:00:43 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Dr. David Alan Gilbert" X-Patchwork-Id: 781881 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3wyXcm2mghz9s72 for ; Thu, 29 Jun 2017 05:18:00 +1000 (AEST) Received: from localhost ([::1]:35325 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dQITO-0002Q7-4G for incoming@patchwork.ozlabs.org; Wed, 28 Jun 2017 15:17:58 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40957) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dQIEq-0005Yv-7e for qemu-devel@nongnu.org; Wed, 28 Jun 2017 15:02:57 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dQIEp-0000Fg-ID for qemu-devel@nongnu.org; Wed, 28 Jun 2017 15:02:56 -0400 Received: from mx1.redhat.com ([209.132.183.28]:43170) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dQIEp-0000FK-Cz for qemu-devel@nongnu.org; Wed, 28 Jun 2017 15:02:55 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 67B5EC0587E4; Wed, 28 Jun 2017 19:02:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 67B5EC0587E4 Authentication-Results: ext-mx08.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx08.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=dgilbert@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 67B5EC0587E4 Received: from dgilbert-t530.redhat.com (ovpn-117-210.ams2.redhat.com [10.36.117.210]) by smtp.corp.redhat.com (Postfix) with ESMTP id B050717D24; Wed, 28 Jun 2017 19:02:50 +0000 (UTC) From: "Dr. David Alan Gilbert (git)" To: qemu-devel@nongnu.org, a.perevalov@samsung.com, marcandre.lureau@redhat.com, maxime.coquelin@redhat.com, mst@redhat.com, quintela@redhat.com, peterx@redhat.com, lvivier@redhat.com, aarcange@redhat.com Date: Wed, 28 Jun 2017 20:00:43 +0100 Message-Id: <20170628190047.26159-26-dgilbert@redhat.com> In-Reply-To: <20170628190047.26159-1-dgilbert@redhat.com> References: <20170628190047.26159-1-dgilbert@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Wed, 28 Jun 2017 19:02:54 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [RFC 25/29] vhu: enable = false on get_vring_base X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" From: "Dr. David Alan Gilbert" When we receive a GET_VRING_BASE message set enable = false to stop any new received packets modifying the ring. Signed-off-by: Dr. David Alan Gilbert Reviewed-by: Maxime Coquelin --- contrib/libvhost-user/libvhost-user.c | 1 + 1 file changed, 1 insertion(+) diff --git a/contrib/libvhost-user/libvhost-user.c b/contrib/libvhost-user/libvhost-user.c index ceddeac74f..d37052b7b0 100644 --- a/contrib/libvhost-user/libvhost-user.c +++ b/contrib/libvhost-user/libvhost-user.c @@ -652,6 +652,7 @@ vu_get_vring_base_exec(VuDev *dev, VhostUserMsg *vmsg) vmsg->size = sizeof(vmsg->payload.state); dev->vq[index].started = false; + dev->vq[index].enable = false; if (dev->iface->queue_set_started) { dev->iface->queue_set_started(dev, index, false); }