From: "Yang, Zhiyong" <zhiyong.yang@intel.com>
To: "Yang, Zhiyong" <zhiyong.yang@intel.com>,
"Tan, Jianfeng" <jianfeng.tan@intel.com>,
Maxime Coquelin <maxime.coquelin@redhat.com>,
"dev@dpdk.org" <dev@dpdk.org>,
"yliu@fridaylinux.org" <yliu@fridaylinux.org>
Cc: "Wang, Wei W" <wei.w.wang@intel.com>
Subject: Re: [dpdk-dev] [PATCH 00/11] net/vhostpci: A new vhostpci PMD supporting VM2VM scenario
Date: Thu, 21 Dec 2017 06:26:38 +0000 [thread overview]
Message-ID: <E182254E98A5DA4EB1E657AC7CB9BD2A8B019A3E@BGSMSX101.gar.corp.intel.com> (raw)
In-Reply-To: <E182254E98A5DA4EB1E657AC7CB9BD2A8B019A21@BGSMSX101.gar.corp.intel.com>
> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Yang, Zhiyong
> Sent: Thursday, December 21, 2017 2:21 PM
> To: Tan, Jianfeng <jianfeng.tan@intel.com>; Maxime Coquelin
> <maxime.coquelin@redhat.com>; dev@dpdk.org; yliu@fridaylinux.org
> Cc: Wang, Wei W <wei.w.wang@intel.com>
> Subject: Re: [dpdk-dev] [PATCH 00/11] net/vhostpci: A new vhostpci PMD
> supporting VM2VM scenario
>
> Hi Jianfeng,
>
> > -----Original Message-----
> > From: Tan, Jianfeng
> > Sent: Thursday, December 21, 2017 1:52 PM
> > To: Yang, Zhiyong <zhiyong.yang@intel.com>; Maxime Coquelin
> > <maxime.coquelin@redhat.com>; dev@dpdk.org; yliu@fridaylinux.org
> > Cc: Wang, Wei W <wei.w.wang@intel.com>
> > Subject: RE: [PATCH 00/11] net/vhostpci: A new vhostpci PMD supporting
> > VM2VM scenario
> >
> > Hi,
> >
> > > -----Original Message-----
> > > From: Yang, Zhiyong
> > > Sent: Wednesday, December 20, 2017 9:52 AM
> > > To: Maxime Coquelin; dev@dpdk.org; yliu@fridaylinux.org
> > > Cc: Wang, Wei W; Tan, Jianfeng
> > > Subject: RE: [PATCH 00/11] net/vhostpci: A new vhostpci PMD
> > > supporting VM2VM scenario
> > >
> > > Hi Maxime,
> > >
> > > > -----Original Message-----
> > > > From: Maxime Coquelin [mailto:maxime.coquelin@redhat.com]
> > > > Sent: Tuesday, December 19, 2017 7:15 PM
> > > > To: Yang, Zhiyong <zhiyong.yang@intel.com>; dev@dpdk.org;
> > > > yliu@fridaylinux.org
> > > > Cc: Wang, Wei W <wei.w.wang@intel.com>; Tan, Jianfeng
> > > > <jianfeng.tan@intel.com>
> > > > Subject: Re: [PATCH 00/11] net/vhostpci: A new vhostpci PMD
> > > > supporting VM2VM scenario
> > > >
> > >
> > > <snip>
> > >
> > > > Thanks for the RFC.
> > > > It seems there is a lot of code duplication between this series
> > > > and
> > > > libvhost-
> > > user.
> > > >
> > > > Does the non-RFC would make reuse of libvhost-user? I'm thinking
> > > > of all
> > > the
> > > > code copied from virtio-net.c for example.
> > > >
> > > > If not, I think this is problematic as it will double the maintenance cost.
> > >
> > > Thank you for paying attention to the patchset . TX/RX logic
> > > basically comes from vhost user code.
> > > but some function interfaces and data structures are different, So
> > > can not reuse them directly, code duplicate should be removed, I'm
> > > aware of this point too, when I was writing the vhostpci PMD.
> > > But We should modify the libvhost-user firstly, let libvhostuser
> > > become more generic.
> > > It looks like that more and more PMDs are becoming the member of
> > > virtio family or are on the road.
> >
> > Trying to draw a conclusion here, there are two kinds of code
> > duplication in net/vhost-pci.
> > - For pci operations in guest driver, it has some duplicated code with
> > virtio-net pmd.
> > - For the enqueue/dequeuer operations, it has some duplicated code
> > with vhost- user lib.
> >
> > Right?
>
> Right. If the existing code in DPDK can become more generic, we can avoid the
> duplication.
>
BTW, wonder why vhost user enqueue/dequeue are put in lib layer,not in driver/net/vhost like virtio PMD?
> Thanks
> Zhiyong
>
> > Thanks,
> > Jianfeng
> >
> > > >
> > > > Cheers,
> > > > Maxime
next prev parent reply other threads:[~2017-12-21 6:26 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-30 9:46 Zhiyong Yang
2017-11-30 9:46 ` [dpdk-dev] [PATCH 01/11] drivers/net: add vhostpci PMD base files Zhiyong Yang
2017-11-30 9:46 ` [dpdk-dev] [PATCH 02/11] net/vhostpci: public header files Zhiyong Yang
2017-11-30 9:46 ` [dpdk-dev] [PATCH 03/11] net/vhostpci: add debugging log macros Zhiyong Yang
2017-11-30 9:46 ` [dpdk-dev] [PATCH 04/11] net/vhostpci: add basic framework Zhiyong Yang
2017-11-30 9:46 ` [dpdk-dev] [PATCH 05/11] net/vhostpci: add queue setup Zhiyong Yang
2017-11-30 9:46 ` [dpdk-dev] [PATCH 06/11] net/vhostpci: add support for link status change Zhiyong Yang
2017-11-30 9:46 ` [dpdk-dev] [PATCH 07/11] net/vhostpci: get remote memory region and vring info Zhiyong Yang
2017-11-30 9:46 ` [dpdk-dev] [PATCH 08/11] net/vhostpci: add RX function Zhiyong Yang
2017-11-30 9:46 ` [dpdk-dev] [PATCH 09/11] net/vhostpci: add TX function Zhiyong Yang
2017-11-30 9:46 ` [dpdk-dev] [PATCH 10/11] net/vhostpci: support RX/TX packets statistics Zhiyong Yang
2017-11-30 9:46 ` [dpdk-dev] [PATCH 11/11] net/vhostpci: update release note Zhiyong Yang
2017-12-05 6:59 ` [dpdk-dev] [PATCH 00/11] net/vhostpci: A new vhostpci PMD supporting VM2VM scenario Yang, Zhiyong
2017-12-05 14:08 ` Yuanhan Liu
2017-12-06 3:00 ` Wei Wang
2017-12-07 6:07 ` Yang, Zhiyong
2017-12-19 11:14 ` Maxime Coquelin
2017-12-20 1:51 ` Yang, Zhiyong
2017-12-21 5:52 ` Tan, Jianfeng
2017-12-21 6:21 ` Yang, Zhiyong
2017-12-21 6:26 ` Yang, Zhiyong [this message]
2017-12-21 8:26 ` Maxime Coquelin
2017-12-21 8:40 ` Yang, Zhiyong
2018-01-11 11:13 ` Yang, Zhiyong
2018-01-18 9:04 ` Maxime Coquelin
2018-01-19 1:56 ` Yang, Zhiyong
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