From patchwork Thu Jun 29 07:58:10 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maxime Coquelin X-Patchwork-Id: 25938 X-Patchwork-Delegate: yuanhan.liu@linux.intel.com Return-Path: X-Original-To: patchwork@dpdk.org Delivered-To: patchwork@dpdk.org Received: from [92.243.14.124] (localhost [IPv6:::1]) by dpdk.org (Postfix) with ESMTP id B326429CA; Thu, 29 Jun 2017 09:58:30 +0200 (CEST) Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by dpdk.org (Postfix) with ESMTP id E4EE12904; Thu, 29 Jun 2017 09:58:28 +0200 (CEST) Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 199503DBEE; Thu, 29 Jun 2017 07:58:28 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 199503DBEE Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx06.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=maxime.coquelin@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 199503DBEE Received: from localhost.localdomain (ovpn-112-58.ams2.redhat.com [10.36.112.58]) by smtp.corp.redhat.com (Postfix) with ESMTP id A1ED917A74; Thu, 29 Jun 2017 07:58:24 +0000 (UTC) From: Maxime Coquelin To: dev@dpdk.org, yliu@fridaylinux.org Cc: i.dyukov@samsung.com, jianfeng.tan@intel.com, stable@dpdk.org, Maxime Coquelin Date: Thu, 29 Jun 2017 09:58:10 +0200 Message-Id: <20170629075810.4225-1-maxime.coquelin@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Thu, 29 Jun 2017 07:58:28 +0000 (UTC) Subject: [dpdk-dev] [PATCH] vhost: fix MTU device feature check 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" The MTU feature support check has to be done against MTU feature bit mask, and not bit position. Cc: stable@dpdk.org Fixes: 72e8543093df ("vhost: add API to get MTU value") Signed-off-by: Maxime Coquelin Reviewed-by: Jianfeng Tan --- This is a follow-up of Ivan's patch, which made me check I didn't introduced same bug elsewhere. lib/librte_vhost/vhost.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/librte_vhost/vhost.c b/lib/librte_vhost/vhost.c index 19c5a43..653152f 100644 --- a/lib/librte_vhost/vhost.c +++ b/lib/librte_vhost/vhost.c @@ -272,7 +272,7 @@ rte_vhost_get_mtu(int vid, uint16_t *mtu) if (!(dev->flags & VIRTIO_DEV_READY)) return -EAGAIN; - if (!(dev->features & VIRTIO_NET_F_MTU)) + if (!(dev->features & (1ULL << VIRTIO_NET_F_MTU))) return -ENOTSUP; *mtu = dev->mtu;