From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from szxga03-in.huawei.com (szxga03-in.huawei.com [45.249.212.189]) by dpdk.org (Postfix) with ESMTP id A3AF758F6 for ; Sun, 9 Jul 2017 17:32:44 +0200 (CEST) Received: from 172.30.72.55 (EHLO NKGEML413-HUB.china.huawei.com) ([172.30.72.55]) by dggrg03-dlp.huawei.com (MOS 4.4.6-GA FastPath queued) with ESMTP id AQV46251; Sun, 09 Jul 2017 23:32:41 +0800 (CST) Received: from FRAEML703-CAH.china.huawei.com (10.206.14.34) by NKGEML413-HUB.china.huawei.com (10.98.56.74) with Microsoft SMTP Server (TLS) id 14.3.235.1; Sun, 9 Jul 2017 23:32:28 +0800 Received: from FRAEML521-MBX.china.huawei.com ([169.254.1.122]) by fraeml703-cah.china.huawei.com ([10.206.14.34]) with mapi id 14.03.0301.000; Sun, 9 Jul 2017 17:32:22 +0200 From: "Avi Cohen (A)" To: "Tan, Jianfeng" , "dpdk-ovs@lists.01.org" , "users@dpdk.org" Thread-Topic: VIRTIO for containers Thread-Index: AQHS71DYC699Y73ftUG6MPPfZcA7c6I503QggAfGd4CAChbRIA== Date: Sun, 9 Jul 2017 15:32:21 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.200.202.183] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CFilter-Loop: Reflected X-Mirapoint-Virus-RAPID-Raw: score=unknown(0), refid=str=0001.0A090201.59624C9A.006C, ss=1, re=0.000, recu=0.000, reip=0.000, cl=1, cld=1, fgs=0, ip=169.254.1.122, so=2014-11-16 11:51:01, dmn=2013-03-21 17:37:32 X-Mirapoint-Loop-Id: fbde8bc3da826f8af31e2ff471e2f748 Subject: Re: [dpdk-users] VIRTIO for containers X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK usage discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 09 Jul 2017 15:32:48 -0000 Thanks you Jianfeng - pls see inline marked [Avi Cohen (A)] > -----Original Message----- > From: Tan, Jianfeng [mailto:jianfeng.tan@intel.com] > Sent: Monday, 03 July, 2017 10:22 AM > To: Avi Cohen (A); dpdk-ovs@lists.01.org; users@dpdk.org > Subject: RE: VIRTIO for containers >=20 >=20 >=20 > > -----Original Message----- > > From: Avi Cohen (A) [mailto:avi.cohen@huawei.com] > > Sent: Wednesday, June 28, 2017 2:45 PM > > To: Tan, Jianfeng; dpdk-ovs@lists.01.org; users@dpdk.org > > Subject: RE: VIRTIO for containers > > > > Thank you Jianfeng > > > > > -----Original Message----- > > > From: Tan, Jianfeng [mailto:jianfeng.tan@intel.com] > > > Sent: Tuesday, 27 June, 2017 5:22 PM > > > To: Avi Cohen (A); dpdk-ovs@lists.01.org; users@dpdk.org > > > Subject: Re: VIRTIO for containers > > > > > > > > > > > > On 6/26/2017 8:06 PM, Avi Cohen (A) wrote: > > > > Thank You Jianfeng > > > > > > > >> We have developed virtio-user + vhost-kernel as the backend. In > > > >> that scenario, you can add the tap interface into a container > > > >> network > > > namespace. > > > >> And there's a vhost kthread to push the data out to user space. > > > >> > > > >> And I cannot guarantee the performance as it has diametric model > > > >> in VM > > > >> (virtio) - OVS-DPDK (vhost). > > > >> > > > > [Avi Cohen (A)] > > > > Can you refer to a document how to run this setup? > > > > > > Please refer to > > > http://dpdk.org/doc/guides/howto/virtio_user_as_exceptional_path.htm > > > l > > > > > [Avi Cohen (A)] > > My setup includes a container and ovs-dpdk , i still not sure about: > > - How to set the virtio backend port in the ovs-dpdk ? >=20 > For OVS-DPDK, you need a version above 2.7.0. Below command is used to > create a virtio-user port with vhost-kernel backend: > # ovs-vsctl add-port br0 virtiouser0 -- set Interface virtiouser0 type=3D= dpdk > options:dpdk-devargs=3Dvirtio_user0,path=3D/dev/vhost-net >=20 > > - How to set the container with the virtio frontend ? >=20 > No, containers will not hold the virtio frontend in this case. Above ovs-= vsctl > command will generate a virtio-user port in OVS, and a tap interface in > kernel, you can assign the tap interface into a net namespace of some > container so that its networking flow will go through OVS-DPDK then to > outside. [Avi Cohen (A)]=20 Thanks you Jianfeng I've tested it and the performance looks very good compared to native ovs. I have 1 more question: You wrote " there's a vhost kthread to push the data out to user space " -= =20 Is that mean a copy from userspace to kernel (and viceversa) or there is a = zero-copy mmap like in AF_PACKET which handles TX/RX rings in userspace ? Best Regards avi >=20 > Thanks, > Jianfeng >=20 > > Best Regards > > avi > > > > > Thanks, > > > Jianfeng > > > > > > > Best Regards > > > > avi > > > >>> I've tested the performance of a container connected to OVS-DPDK > > > >>> via vdev-af_packet and processed by virtual PMD, and its > > > >>> performance is good [uses mmap'ed to userspace - zero copy > > > >>> RX/TX ring buffer] but not good as the performance of a VM > > > >>> connected to OVS-DPDK (@host) via vhost-user virtio. > > > >>> Best Regards > > > >>> avi > > > >>> > > > >>>> -----Original Message----- > > > >>>> From: Tan, Jianfeng [mailto:jianfeng.tan@intel.com] > > > >>>> Sent: Monday, 26 June, 2017 6:15 AM > > > >>>> To: Avi Cohen (A); dpdk-ovs@lists.01.org; users@dpdk.org > > > >>>> Subject: RE: VIRTIO for containers > > > >>>> > > > >>>> Hi Avi, > > > >>>> > > > >>>>> -----Original Message----- > > > >>>>> From: users [mailto:users-bounces@dpdk.org] On Behalf Of Avi > > Cohen > > > >>>>> (A) > > > >>>>> Sent: Sunday, June 25, 2017 11:13 PM > > > >>>>> To: dpdk-ovs@lists.01.org; users@dpdk.org > > > >>>>> Subject: [dpdk-users] VIRTIO for containers > > > >>>>> > > > >>>>> Hello, > > > >>>>> Does anyone know the status of this project > > > >>>>> http://dpdk.org/ml/archives/dev/2015-November/027732.html - > > > >>>>> Implementing a virtio device for containers ? > > > >>>> It has been upstreamed since v16.07. Here is a howto doc: > > > >>>> > > > >>> > > > > http://dpdk.org/doc/guides/howto/virtio_user_for_container_networking. > > > >>> h > > > >>>> tml > > > >>>> > > > >>>> > > > >>>> Thanks, > > > >>>> Jianfeng > > > >>>> > > > >>>>> Best Regards > > > >>>>> avi