From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mailout1.w1.samsung.com (mailout1.w1.samsung.com [210.118.77.11]) by dpdk.org (Postfix) with ESMTP id 066BE8E7C for ; Fri, 11 Dec 2015 09:26:58 +0100 (CET) Received: from eucpsbgm1.samsung.com (unknown [203.254.199.244]) by mailout1.w1.samsung.com (Oracle Communications Messaging Server 7.0.5.31.0 64bit (built May 5 2014)) with ESMTP id <0NZ600HY9Q4WDG80@mailout1.w1.samsung.com> for dev@dpdk.org; Fri, 11 Dec 2015 08:26:56 +0000 (GMT) X-AuditID: cbfec7f4-f79026d00000418a-96-566a88d008f5 Received: from eusync1.samsung.com ( [203.254.199.211]) by eucpsbgm1.samsung.com (EUCPMTA) with SMTP id CE.26.16778.0D88A665; Fri, 11 Dec 2015 08:26:56 +0000 (GMT) Received: from fedinw7x64 ([106.109.131.169]) by eusync1.samsung.com (Oracle Communications Messaging Server 7.0.5.31.0 64bit (built May 5 2014)) with ESMTPA id <0NZ600I77Q4VTP70@eusync1.samsung.com>; Fri, 11 Dec 2015 08:26:56 +0000 (GMT) From: Pavel Fedin To: dev@dpdk.org Date: Fri, 11 Dec 2015 11:26:55 +0300 Message-id: <000001d133ed$b2446eb0$16cd4c10$@samsung.com> MIME-version: 1.0 Content-type: text/plain; charset=us-ascii Content-transfer-encoding: 7bit X-Mailer: Microsoft Outlook 14.0 Thread-index: AdEz7JRF8caHbGCaTVabXPFrfmy5LA== Content-language: ru X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrALMWRmVeSWpSXmKPExsVy+t/xy7oXOrLCDNqeiVm8+7SdyeL6hAus DkwevxYsZfWYdzIwgCmKyyYlNSezLLVI3y6BK2P/mRbGghb2ikOXJjA3MF5m7WLk5JAQMJFY emQhlC0mceHeerYuRi4OIYGljBIf591nhXC+M0qs+TwBrIpNQF3i9NcPLCC2iICAxOfOxWwg NrOAvMT3+c/A4sICvhKfPp8Ei7MIqEpc2nKbHcTmFbCUePzwNwuELSjxY/I9FoheLYn1O48z wczZvOYtM8RFChI7zr5mhNilJzH5zi5WiBoRiWn/7jFPYBSYhWTULCSjZiEZNQtJywJGllWM oqmlyQXFSem5hnrFibnFpXnpesn5uZsYIeH6ZQfj4mNWhxgFOBiVeHgXcmSFCbEmlhVX5h5i lOBgVhLh5U8FCvGmJFZWpRblxxeV5qQWH2KU5mBREuedu+t9iJBAemJJanZqakFqEUyWiYNT qoGxbr/snq0PTk3cdfn53BzHDRmMB063TO1TVdErdu/LTtDdLhUxofsLt8cxo7kxy9hrY6bq xFtfM12vVJQr81rU/qGz/9OaJyft1DKXbrePKGUpy1/UUzdHbu013RusuXv14zQkEpZXCiw/ ejg+0TP5SsJ7Np+Jvvb5T071z9ZYq31v08yPN7iUWIozEg21mIuKEwHFUcBTUwIAAA== Subject: Re: [dpdk-dev] [PATCH 0/4 for 2.3] vhost-user live migration support X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 11 Dec 2015 08:26:58 -0000 Hello! I am currently testing this patchset with qemu and have problems. The guest migrates correctly, but after the migration it cries in the log: Vhost user backend fails to broadcast fake RARP and pinging the (new) host doesn't work. When i migrate it back to the old host, the network resumes working. I have analyzed the code, and this problem happens because we support neither VHOST_USER_PROTOCOL_F_RARP, nor VIRTIO_NET_F_GUEST_ANNOUNCE. Since the latter seems to be related only to guest, i simply enabled it in qemu by force, and after this the network doesn't work at all. Can anybody help me and explain how the thing works? I expected that gratuitous ARP packets are harmless, but they seem to break things somehow. And what was used for testing the implementation? Kind regards, Pavel Fedin Expert Engineer Samsung Electronics Research center Russia