From patchwork Tue Sep 9 03:10:05 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Wang X-Patchwork-Id: 387119 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 1A3AC14012A for ; Tue, 9 Sep 2014 13:11:36 +1000 (EST) Received: from localhost ([::1]:46680 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XRBpT-0003hf-K5 for incoming@patchwork.ozlabs.org; Mon, 08 Sep 2014 23:10:51 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:60770) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XRBoz-0003QI-Su for qemu-devel@nongnu.org; Mon, 08 Sep 2014 23:10:26 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XRBou-0002mP-Rk for qemu-devel@nongnu.org; Mon, 08 Sep 2014 23:10:21 -0400 Received: from mx1.redhat.com ([209.132.183.28]:26815) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XRBou-0002mL-Kb for qemu-devel@nongnu.org; Mon, 08 Sep 2014 23:10:16 -0400 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id s893AEdP000469 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 8 Sep 2014 23:10:14 -0400 Received: from hp-dl380pg8-02.qe.lab.eng.nay.redhat.com (hp-dl380pg8-02.qe.lab.eng.nay.redhat.com [10.66.106.69]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id s893A9RA007475; Mon, 8 Sep 2014 23:10:10 -0400 From: Jason Wang To: qemu-devel@nongnu.org Date: Tue, 9 Sep 2014 11:10:05 +0800 Message-Id: <1410232205-39473-1-git-send-email-jasowang@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 209.132.183.28 Cc: Peter Maydell , mst@redhat.com, Jason Wang , Markus Armbruster , Stefan Hajnoczi , afaerber@suse.de Subject: [Qemu-devel] [PATCH V2] net: don't use set/get_pointer() in set/get_netdev() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 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-bounces+incoming=patchwork.ozlabs.org@nongnu.org Commit 1ceef9f27359cbe92ef124bf74de6f792e71f6fb (net: multiqueue support) tries to use set_pointer() and get_pointer() to set and get NICPeers which is not a pointer defined in DEFINE_PROP_NETDEV. This trick works but result a unclean and fragile implementation (e.g print_netdev and parse_netdev). This patch solves this issue by not using set/get_pinter() and set and get netdev directly in set_netdev() and get_netdev(). After this the parse_netdev() and print_netdev() were no longer used and dropped from the source. Cc: Markus Armbruster Cc: Stefan Hajnoczi Cc: Peter Maydell Signed-off-by: Jason Wang --- Changes from V1: - validate ncs pointer before accessing them, this fixes the qtest failure on arm. --- hw/core/qdev-properties-system.c | 71 ++++++++++++++++++++++------------------ 1 file changed, 39 insertions(+), 32 deletions(-) diff --git a/hw/core/qdev-properties-system.c b/hw/core/qdev-properties-system.c index ae0900f..6939ea5 100644 --- a/hw/core/qdev-properties-system.c +++ b/hw/core/qdev-properties-system.c @@ -176,41 +176,67 @@ PropertyInfo qdev_prop_chr = { }; /* --- netdev device --- */ +static void get_netdev(Object *obj, Visitor *v, void *opaque, + const char *name, Error **errp) +{ + DeviceState *dev = DEVICE(obj); + Property *prop = opaque; + NICPeers *peers_ptr = qdev_get_prop_ptr(dev, prop); + char *p = g_strdup(peers_ptr->ncs[0] ? peers_ptr->ncs[0]->name : ""); -static int parse_netdev(DeviceState *dev, const char *str, void **ptr) + visit_type_str(v, &p, name, errp); + g_free(p); +} + +static void set_netdev(Object *obj, Visitor *v, void *opaque, + const char *name, Error **errp) { - NICPeers *peers_ptr = (NICPeers *)ptr; + DeviceState *dev = DEVICE(obj); + Property *prop = opaque; + NICPeers *peers_ptr = qdev_get_prop_ptr(dev, prop); NetClientState **ncs = peers_ptr->ncs; NetClientState *peers[MAX_QUEUE_NUM]; - int queues, i = 0; - int ret; + Error *local_err = NULL; + int err, queues, i = 0; + char *str; + + if (dev->realized) { + qdev_prop_set_after_realize(dev, name, errp); + return; + } + + visit_type_str(v, &str, name, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } queues = qemu_find_net_clients_except(str, peers, NET_CLIENT_OPTIONS_KIND_NIC, MAX_QUEUE_NUM); if (queues == 0) { - ret = -ENOENT; + err = -ENOENT; goto err; } if (queues > MAX_QUEUE_NUM) { - ret = -E2BIG; + err = -E2BIG; goto err; } for (i = 0; i < queues; i++) { if (peers[i] == NULL) { - ret = -ENOENT; + err = -ENOENT; goto err; } if (peers[i]->peer) { - ret = -EEXIST; + err = -EEXIST; goto err; } if (ncs[i]) { - ret = -EINVAL; + err = -EINVAL; goto err; } @@ -219,31 +245,12 @@ static int parse_netdev(DeviceState *dev, const char *str, void **ptr) } peers_ptr->queues = queues; - - return 0; + g_free(str); + return; err: - return ret; -} - -static char *print_netdev(void *ptr) -{ - NetClientState *netdev = ptr; - const char *val = netdev->name ? netdev->name : ""; - - return g_strdup(val); -} - -static void get_netdev(Object *obj, Visitor *v, void *opaque, - const char *name, Error **errp) -{ - get_pointer(obj, v, opaque, print_netdev, name, errp); -} - -static void set_netdev(Object *obj, Visitor *v, void *opaque, - const char *name, Error **errp) -{ - set_pointer(obj, v, opaque, parse_netdev, name, errp); + error_set_from_qdev_prop_error(errp, err, dev, prop, str); + g_free(str); } PropertyInfo qdev_prop_netdev = {