From: Thomas Monjalon <thomas.monjalon@6wind.com>
To: Jianfeng Tan <jianfeng.tan@intel.com>
Cc: dev@dpdk.org, yuanhan.liu@linux.intel.com,
ferruh.yigit@intel.com, cunming.liang@intel.com
Subject: Re: [PATCH 0/3] virtio_user as an alternative exception path
Date: Fri, 02 Dec 2016 15:44:26 +0100 [thread overview]
Message-ID: <1690999.5JB2ccKKLB@xps13> (raw)
In-Reply-To: <1480689075-66977-1-git-send-email-jianfeng.tan@intel.com>
2016-12-02 14:31, Jianfeng Tan:
> In v16.07, we upstreamed a virtual device, virtio_user (with vhost-user
> as the backend). The path to go with a vhost-kernel backend has been
> dropped for bad performance comparing to vhost-user and code simplicity.
>
> But after a second thought, virtio_user + vhost-kernel is a good
> candidate as an exceptional path, such as KNI, which exchanges packets
> with kernel networking stack.
> - maintenance: vhost-net (kernel) is upstreamed and extensively used
> kernel module. We don't need any out-of-tree module like KNI.
> - performance: as with KNI, this solution would use one or more
> kthreads to send/receive packets from user space DPDK applications,
> which has little impact on user space polling thread (except that
> it might enter into kernel space to wake up those kthreads if
> necessary.
> - features: vhost-net is born to be a networking solution, which has
> lots of networking related featuers, like multi queue, tso, multi-seg
> mbuf, etc.
That's a really interesting trial.
Have I already said that I don't like KNI? ;)
> Known issues for current version:
> - Multiqueue not supported yet.
> - Offloading is completely enabled yet; to enhance, we will translate
Is a "not" missing in this sentence?
> the virtio header info into mbuf metadata when receiving packets
> from kernel; and translate mbuf metadata info into virtio header
> when sending packets to kernel.
So what is the ambition for 17.02?
Do you think it could be integrated?
next prev parent reply other threads:[~2016-12-02 14:44 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-02 14:31 [PATCH 0/3] virtio_user as an alternative exception path Jianfeng Tan
2016-12-02 14:31 ` [PATCH 1/3] net/virtio_user: add vhost layer Jianfeng Tan
2016-12-08 7:21 ` Yuanhan Liu
2016-12-02 14:31 ` [PATCH 2/3] net/virtio_user: add vhost kernel support Jianfeng Tan
2016-12-02 14:31 ` [PATCH 3/3] net/virtio_user: fix wrongly set features Jianfeng Tan
2016-12-08 8:32 ` Yuanhan Liu
2016-12-02 14:44 ` Thomas Monjalon [this message]
2016-12-23 7:14 ` [PATCH v2 0/7] virtio_user as an alternative exception path Jianfeng Tan
2016-12-23 7:14 ` [PATCH v2 1/7] net/virtio_user: fix wrongly set features Jianfeng Tan
2016-12-23 7:14 ` [PATCH v2 2/7] net/virtio_user: postpone DRIVER OK notification Jianfeng Tan
2016-12-26 6:27 ` Yuanhan Liu
2016-12-26 6:55 ` Tan, Jianfeng
2016-12-26 8:02 ` Yuanhan Liu
2016-12-26 8:26 ` Tan, Jianfeng
2016-12-23 7:14 ` [PATCH v2 3/7] net/virtio_user: move vhost user specific code Jianfeng Tan
2016-12-26 6:28 ` Yuanhan Liu
2016-12-26 6:58 ` Tan, Jianfeng
2016-12-26 7:57 ` Yuanhan Liu
2016-12-29 9:40 ` Tan, Jianfeng
2016-12-23 7:14 ` [PATCH v2 4/7] net/virtio_user: abstract virtio user backend ops Jianfeng Tan
2016-12-26 6:41 ` Yuanhan Liu
2016-12-23 7:14 ` [PATCH v2 5/7] net/virtio_user: add vhost kernel support Jianfeng Tan
2016-12-26 7:44 ` Yuanhan Liu
2017-01-04 7:22 ` Tan, Jianfeng
2017-01-04 7:46 ` Yuanhan Liu
2017-01-09 4:51 ` Jason Wang
2017-01-09 4:39 ` Jason Wang
2017-01-10 6:11 ` Tan, Jianfeng
2017-01-10 8:46 ` Thomas Monjalon
2017-01-10 9:11 ` Tan, Jianfeng
2017-01-11 2:42 ` Jason Wang
2017-01-11 3:13 ` Tan, Jianfeng
2017-01-11 3:23 ` Jason Wang
2017-01-12 9:40 ` Tan, Jianfeng
2017-01-13 2:27 ` Jason Wang
2017-01-11 2:30 ` Tan, Jianfeng
2017-01-11 2:45 ` Jason Wang
2016-12-23 7:14 ` [PATCH v2 6/7] net/virtio_user: enable offloading Jianfeng Tan
2016-12-26 7:53 ` Yuanhan Liu
2016-12-23 7:14 ` [PATCH v2 7/7] net/virtio_user: enable multiqueue with vhost kernel Jianfeng Tan
2017-01-04 3:59 ` [PATCH v3 0/7] virtio_user as an alternative exception path Jianfeng Tan
2017-01-04 3:59 ` [PATCH v3 1/7] net/virtio_user: fix wrongly set features Jianfeng Tan
2017-01-04 3:59 ` [PATCH v3 2/7] net/virtio_user: fix not properly reset device Jianfeng Tan
2017-01-04 5:46 ` Yuanhan Liu
2017-01-04 3:59 ` [PATCH v3 3/7] net/virtio_user: move vhost user specific code Jianfeng Tan
2017-01-04 6:02 ` Yuanhan Liu
2017-01-04 6:46 ` Tan, Jianfeng
2017-01-04 7:08 ` Yuanhan Liu
2017-01-04 3:59 ` [PATCH v3 4/7] net/virtio_user: abstract virtio user backend ops Jianfeng Tan
2017-01-04 6:11 ` Yuanhan Liu
2017-01-04 3:59 ` [PATCH v3 5/7] net/virtio_user: add vhost kernel support Jianfeng Tan
2017-01-04 6:13 ` Yuanhan Liu
2017-01-04 3:59 ` [PATCH v3 6/7] net/virtio_user: enable offloading Jianfeng Tan
2017-01-04 3:59 ` [PATCH v3 7/7] net/virtio_user: enable multiqueue with vhost kernel Jianfeng Tan
2017-01-09 14:06 ` [PATCH v3 0/7] virtio_user as an alternative exception path Bruce Richardson
2017-01-10 8:46 ` Tan, Jianfeng
2017-01-13 12:18 ` [PATCH v4 0/8] " Jianfeng Tan
2017-01-13 12:18 ` [PATCH v4 1/8] net/virtio_user: fix wrongly get/set features Jianfeng Tan
2017-01-13 12:18 ` [PATCH v4 2/8] net/virtio_user: fix not properly reset device Jianfeng Tan
2017-01-13 12:18 ` [PATCH v4 3/8] net/virtio_user: move vhost user specific code Jianfeng Tan
2017-01-13 12:18 ` [PATCH v4 4/8] net/virtio_user: abstract virtio user backend ops Jianfeng Tan
2017-01-13 12:18 ` [PATCH v4 5/8] net/virtio_user: add vhost kernel support Jianfeng Tan
2017-01-13 12:18 ` [PATCH v4 6/8] net/virtio_user: enable offloading Jianfeng Tan
2017-01-13 12:18 ` [PATCH v4 7/8] net/virtio_user: enable multiqueue with vhost kernel Jianfeng Tan
2017-01-13 12:18 ` [PATCH v4 8/8] doc: add guide to use virtio_user as exceptional path Jianfeng Tan
2017-01-16 6:00 ` Yuanhan Liu
2017-01-16 6:04 ` Yuanhan Liu
2017-01-16 9:44 ` Thomas Monjalon
2017-01-16 9:49 ` Yuanhan Liu
2017-01-16 14:45 ` Thomas Monjalon
2017-01-22 0:46 ` Aws Ismail
2017-01-22 7:16 ` Tan, Jianfeng
2017-01-16 15:05 ` [PATCH v4 0/8] virtio_user as an alternative exception path Yuanhan Liu
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