From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Monjalon Subject: Re: [PATCH v3] vhost: fix driver unregister for client mode Date: Fri, 22 Jul 2016 00:26:12 +0200 Message-ID: <10749425.IIEiBRfea3@xps13> References: <1469003563-27340-1-git-send-email-i.maximets@samsung.com> <1469105736-413-1-git-send-email-i.maximets@samsung.com> <20160721131832.GJ28708@yliu-dev.sh.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7Bit Cc: Yuanhan Liu , dev@dpdk.org, Huawei Xie , Dyasly Sergey , Heetae Ahn To: Ilya Maximets Return-path: Received: from mail-wm0-f54.google.com (mail-wm0-f54.google.com [74.125.82.54]) by dpdk.org (Postfix) with ESMTP id 351B05A4F for ; Fri, 22 Jul 2016 00:26:14 +0200 (CEST) Received: by mail-wm0-f54.google.com with SMTP id o80so42469305wme.1 for ; Thu, 21 Jul 2016 15:26:14 -0700 (PDT) In-Reply-To: <20160721131832.GJ28708@yliu-dev.sh.intel.com> List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" 2016-07-21 21:18, Yuanhan Liu: > On Thu, Jul 21, 2016 at 03:55:36PM +0300, Ilya Maximets wrote: > > Currently while calling of 'rte_vhost_driver_unregister()' connection > > to QEMU will not be closed. This leads to inability to register driver > > again and reconnect to same virtual machine. > > > > This scenario is reproducible with OVS. While executing of the following > > command vhost port will be re-created (will be executed > > 'rte_vhost_driver_register()' followed by 'rte_vhost_driver_unregister()') > > network will be broken and QEMU possibly will crash: > > > > ovs-vsctl set Interface vhost1 ofport_request=15 > > > > Fix this by closing all established connections on driver unregister and > > removing of pending connections from reconnection list. > > > > Fixes: 64ab701c3d1e ("vhost: add vhost-user client mode") > > > > Signed-off-by: Ilya Maximets > > --- > > > > Version 3: > > * fixed leak of file descriptors by adding of > > 'close(reconn->fd)' to 'vhost_user_remove_reconnect()' > > > > Version 2: > > * style fixes. > > Acked-by: Yuanhan Liu Applied, thanks