From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by dpdk.org (Postfix) with ESMTP id 448277D19 for ; Wed, 13 Dec 2017 09:51:29 +0100 (CET) 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 A9AB5C014190; Wed, 13 Dec 2017 08:51:28 +0000 (UTC) Received: from localhost.localdomain (ovpn-112-48.ams2.redhat.com [10.36.112.48]) by smtp.corp.redhat.com (Postfix) with ESMTP id B4C415D723; Wed, 13 Dec 2017 08:51:26 +0000 (UTC) From: Maxime Coquelin To: dev@dpdk.org, yliu@fridaylinux.org, tiwei.bie@intel.com, jianfeng.tan@intel.com, lprosek@redhat.com, lersek@redhat.com Cc: Maxime Coquelin Date: Wed, 13 Dec 2017 09:51:07 +0100 Message-Id: <20171213085109.9891-3-maxime.coquelin@redhat.com> In-Reply-To: <20171213085109.9891-1-maxime.coquelin@redhat.com> References: <20171213085109.9891-1-maxime.coquelin@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 [10.5.110.31]); Wed, 13 Dec 2017 08:51:28 +0000 (UTC) Subject: [dpdk-dev] [PATCH v5 2/4] vhost: propagate VHOST_USER_SET_FEATURES handling error 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: , X-List-Received-Date: Wed, 13 Dec 2017 08:51:29 -0000 Not propagating VHOST_USER_SET_FEATURES request handling error may result in unpredictable behavior, as host and guests features may no more be synchronized. This patch fixes this by reporting the error to the upper layer, which would result in the device being destroyed and the connection with the master to be closed. Signed-off-by: Maxime Coquelin --- lib/librte_vhost/vhost_user.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c index 545dbcb2b..471b1612c 100644 --- a/lib/librte_vhost/vhost_user.c +++ b/lib/librte_vhost/vhost_user.c @@ -1263,7 +1263,9 @@ vhost_user_msg_handler(int vid, int fd) send_vhost_reply(fd, &msg); break; case VHOST_USER_SET_FEATURES: - vhost_user_set_features(dev, msg.payload.u64); + ret = vhost_user_set_features(dev, msg.payload.u64); + if (ret) + return -1; break; case VHOST_USER_GET_PROTOCOL_FEATURES: -- 2.14.3