From patchwork Fri Aug 14 09:21:38 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vipul Ashri X-Patchwork-Id: 75637 X-Patchwork-Delegate: maxime.coquelin@redhat.com Return-Path: X-Original-To: patchwork@inbox.dpdk.org Delivered-To: patchwork@inbox.dpdk.org Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 74492A034C; Tue, 18 Aug 2020 15:51:01 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id 7A9E91C1AE; Tue, 18 Aug 2020 15:47:23 +0200 (CEST) Received: from userp2120.oracle.com (userp2120.oracle.com [156.151.31.85]) by dpdk.org (Postfix) with ESMTP id AC7CA1C0CD; Fri, 14 Aug 2020 11:22:44 +0200 (CEST) Received: from pps.filterd (userp2120.oracle.com [127.0.0.1]) by userp2120.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 07E9MhnY075465; Fri, 14 Aug 2020 09:22:43 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : mime-version : content-transfer-encoding; s=corp-2020-01-29; bh=PyGERTMxQIjj1Gc+veOLRN0Vc7P2HSS60BlhuK2xveE=; b=tmNE0DGVR4nq9zJL7L92BomsSUTnHBFgTcwu0325p8yw+sZ58nR6bvCxIaczsiAYlqgs ftdzrmE97YrFGFRMq7n9gn6x9GpCsgtD87C0NosEYmLANfe3IfuJfDWfw4LZwFBhGexK oNn+GfXO1Rp2iwAU/dva72TjticWhqkpxwTNDTeqydl2tMEuO8xpQ3YQ6f1rwOBNQjB5 we3B0QnQhoun4Z6Azedp7l9TUy2n7+tfs4WdMqMwqs+ZHT0CnY2X3nDbWOIzpUx6IH+o BXRf9mnMzePazsxyKuYdn/sh5EAhNRItrWWwwCknLyo7IT2g8otB3jr9oilsu9zYhJz2 hQ== Received: from aserp3030.oracle.com (aserp3030.oracle.com [141.146.126.71]) by userp2120.oracle.com with ESMTP id 32w73ccgb7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 14 Aug 2020 09:22:43 +0000 Received: from pps.filterd (aserp3030.oracle.com [127.0.0.1]) by aserp3030.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 07E9DjXd004281; Fri, 14 Aug 2020 09:22:38 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by aserp3030.oracle.com with ESMTP id 32t5msx00r-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 14 Aug 2020 09:22:38 +0000 Received: from abhmp0002.oracle.com (abhmp0002.oracle.com [141.146.116.8]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 07E9MbQB028753; Fri, 14 Aug 2020 09:22:37 GMT Received: from VASHRI-IN.in.oracle.com (/10.166.160.130) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Fri, 14 Aug 2020 09:22:36 +0000 From: Vipul Ashri To: dev@dpdk.org Cc: chenbo.xia@intel.com, vipul.ashri@oracle.com, zhihong.wang@intel.com, maxime.coquelin@redhat.com, stable@dpdk.org Date: Fri, 14 Aug 2020 14:51:38 +0530 Message-Id: <20200814092138.1692-1-vipul.ashri@oracle.com> X-Mailer: git-send-email 2.28.0.windows.1 MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9712 signatures=668679 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 spamscore=0 mlxscore=0 adultscore=0 malwarescore=0 mlxlogscore=999 phishscore=0 suspectscore=1 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2008140070 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9712 signatures=668679 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 mlxlogscore=999 bulkscore=0 phishscore=0 suspectscore=1 mlxscore=0 priorityscore=1501 spamscore=0 clxscore=1015 lowpriorityscore=0 adultscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2008140071 X-Mailman-Approved-At: Tue, 18 Aug 2020 15:47:00 +0200 Subject: [dpdk-dev] [PATCH] net/virtio: fix wrong variable assignment in helper macro X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Inside Macro ASSIGN_UNLESS_EQUAL(var, val), assignment to var is always failing as assignment done using var_ having local scope only. This leads to TX packets not going out and found broken due to cleanup malfunctioning. This patch fixes the wrong variable assignment. Fixes: 57f90f894588 ("net/virtio: reuse packed ring functions") Cc: stable@dpdk.org Signed-off-by: Vipul Ashri --- drivers/net/virtio/virtqueue.h | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/net/virtio/virtqueue.h b/drivers/net/virtio/virtqueue.h index 105a9c00c..20c95471e 100644 --- a/drivers/net/virtio/virtqueue.h +++ b/drivers/net/virtio/virtqueue.h @@ -607,10 +607,8 @@ virtqueue_notify(struct virtqueue *vq) /* avoid write operation when necessary, to lessen cache issues */ #define ASSIGN_UNLESS_EQUAL(var, val) do { \ - typeof(var) var_ = (var); \ - typeof(val) val_ = (val); \ - if ((var_) != (val_)) \ - (var_) = (val_); \ + if ((var) != (val)) \ + (var) = (val); \ } while (0) #define virtqueue_clear_net_hdr(hdr) do { \