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* [dpdk-dev] [PATCH 0/3] virtio_user as an alternative exception path
@ 2016-12-02 14:31 Jianfeng Tan
  2016-12-02 14:31 ` [dpdk-dev] [PATCH 1/3] net/virtio_user: add vhost layer Jianfeng Tan
                   ` (6 more replies)
  0 siblings, 7 replies; 72+ messages in thread
From: Jianfeng Tan @ 2016-12-02 14:31 UTC (permalink / raw)
  To: dev; +Cc: yuanhan.liu, ferruh.yigit, cunming.liang, 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.

Known issues for current version:
  - Multiqueue not supported yet.
  - Offloading is completely enabled yet; to enhance, we will translate
    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.

Signed-off-by: Jianfeng Tan <jianfeng.tan@intel.com>

Jianfeng Tan (3):
  net/virtio_user: add vhost layer
  net/virtio_user: add vhost kernel support
  net/virtio_user: fix wrongly set features

 drivers/net/virtio/Makefile                      |   2 +
 drivers/net/virtio/virtio_user/vhost.c           | 181 ++++++++++
 drivers/net/virtio/virtio_user/vhost.h           |  73 ++--
 drivers/net/virtio/virtio_user/vhost_kernel.c    | 413 +++++++++++++++++++++++
 drivers/net/virtio/virtio_user/vhost_user.c      |  81 +++--
 drivers/net/virtio/virtio_user/virtio_user_dev.c |  49 ++-
 drivers/net/virtio/virtio_user/virtio_user_dev.h |   3 +-
 drivers/net/virtio/virtio_user_ethdev.c          |   4 +-
 8 files changed, 708 insertions(+), 98 deletions(-)
 create mode 100644 drivers/net/virtio/virtio_user/vhost.c
 create mode 100644 drivers/net/virtio/virtio_user/vhost_kernel.c

-- 
2.7.4

^ permalink raw reply	[flat|nested] 72+ messages in thread

end of thread, other threads:[~2017-01-22  7:17 UTC | newest]

Thread overview: 72+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-12-02 14:31 [dpdk-dev] [PATCH 0/3] virtio_user as an alternative exception path Jianfeng Tan
2016-12-02 14:31 ` [dpdk-dev] [PATCH 1/3] net/virtio_user: add vhost layer Jianfeng Tan
2016-12-08  7:21   ` Yuanhan Liu
2016-12-02 14:31 ` [dpdk-dev] [PATCH 2/3] net/virtio_user: add vhost kernel support Jianfeng Tan
2016-12-02 14:31 ` [dpdk-dev] [PATCH 3/3] net/virtio_user: fix wrongly set features Jianfeng Tan
2016-12-08  8:32   ` Yuanhan Liu
2016-12-02 14:44 ` [dpdk-dev] [PATCH 0/3] virtio_user as an alternative exception path Thomas Monjalon
2016-12-23  7:14 ` [dpdk-dev] [PATCH v2 0/7] " Jianfeng Tan
2016-12-23  7:14   ` [dpdk-dev] [PATCH v2 1/7] net/virtio_user: fix wrongly set features Jianfeng Tan
2016-12-23  7:14   ` [dpdk-dev] [PATCH v2 2/7] net/virtio_user: postpone DRIVER OK notification Jianfeng Tan
     [not found]     ` <20161226062719.GA19288@yliu-dev.sh.intel.com>
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   ` [dpdk-dev] [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   ` [dpdk-dev] [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   ` [dpdk-dev] [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   ` [dpdk-dev] [PATCH v2 6/7] net/virtio_user: enable offloading Jianfeng Tan
2016-12-26  7:53     ` Yuanhan Liu
2016-12-23  7:14   ` [dpdk-dev] [PATCH v2 7/7] net/virtio_user: enable multiqueue with vhost kernel Jianfeng Tan
2017-01-04  3:59 ` [dpdk-dev] [PATCH v3 0/7] virtio_user as an alternative exception path Jianfeng Tan
2017-01-04  3:59   ` [dpdk-dev] [PATCH v3 1/7] net/virtio_user: fix wrongly set features Jianfeng Tan
2017-01-04  3:59   ` [dpdk-dev] [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   ` [dpdk-dev] [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   ` [dpdk-dev] [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   ` [dpdk-dev] [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   ` [dpdk-dev] [PATCH v3 6/7] net/virtio_user: enable offloading Jianfeng Tan
2017-01-04  3:59   ` [dpdk-dev] [PATCH v3 7/7] net/virtio_user: enable multiqueue with vhost kernel Jianfeng Tan
2017-01-09 14:06   ` [dpdk-dev] [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 ` [dpdk-dev] [PATCH v4 0/8] " Jianfeng Tan
2017-01-13 12:18   ` [dpdk-dev] [PATCH v4 1/8] net/virtio_user: fix wrongly get/set features Jianfeng Tan
2017-01-13 12:18   ` [dpdk-dev] [PATCH v4 2/8] net/virtio_user: fix not properly reset device Jianfeng Tan
2017-01-13 12:18   ` [dpdk-dev] [PATCH v4 3/8] net/virtio_user: move vhost user specific code Jianfeng Tan
2017-01-13 12:18   ` [dpdk-dev] [PATCH v4 4/8] net/virtio_user: abstract virtio user backend ops Jianfeng Tan
2017-01-13 12:18   ` [dpdk-dev] [PATCH v4 5/8] net/virtio_user: add vhost kernel support Jianfeng Tan
2017-01-13 12:18   ` [dpdk-dev] [PATCH v4 6/8] net/virtio_user: enable offloading Jianfeng Tan
2017-01-13 12:18   ` [dpdk-dev] [PATCH v4 7/8] net/virtio_user: enable multiqueue with vhost kernel Jianfeng Tan
2017-01-13 12:18   ` [dpdk-dev] [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   ` [dpdk-dev] [PATCH v4 0/8] virtio_user as an alternative exception path Yuanhan Liu

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