From: "Xia, Chenbo" <chenbo.xia@intel.com>
To: Maxime Coquelin <maxime.coquelin@redhat.com>,
"dev@dpdk.org" <dev@dpdk.org>,
"david.marchand@redhat.com" <david.marchand@redhat.com>,
"mkp@redhat.com" <mkp@redhat.com>,
"fbl@redhat.com" <fbl@redhat.com>,
"jasowang@redhat.com" <jasowang@redhat.com>,
"Liang, Cunming" <cunming.liang@intel.com>,
"Xie, Yongji" <xieyongji@bytedance.com>,
"echaudro@redhat.com" <echaudro@redhat.com>,
"eperezma@redhat.com" <eperezma@redhat.com>,
"amorenoz@redhat.com" <amorenoz@redhat.com>,
"lulu@redhat.com" <lulu@redhat.com>
Subject: RE: [PATCH v5 00/26] Add VDUSE support to Vhost library
Date: Wed, 7 Jun 2023 06:48:30 +0000 [thread overview]
Message-ID: <SN6PR11MB35041E06BE8EABADBE2117E19C53A@SN6PR11MB3504.namprd11.prod.outlook.com> (raw)
In-Reply-To: <20230606081852.71003-1-maxime.coquelin@redhat.com>
Hi Maxime,
> -----Original Message-----
> From: Maxime Coquelin <maxime.coquelin@redhat.com>
> Sent: Tuesday, June 6, 2023 4:18 PM
> To: dev@dpdk.org; Xia, Chenbo <chenbo.xia@intel.com>;
> david.marchand@redhat.com; mkp@redhat.com; fbl@redhat.com;
> jasowang@redhat.com; Liang, Cunming <cunming.liang@intel.com>; Xie, Yongji
> <xieyongji@bytedance.com>; echaudro@redhat.com; eperezma@redhat.com;
> amorenoz@redhat.com; lulu@redhat.com
> Cc: Maxime Coquelin <maxime.coquelin@redhat.com>
> Subject: [PATCH v5 00/26] Add VDUSE support to Vhost library
>
> This series introduces a new type of backend, VDUSE,
> to the Vhost library.
>
> VDUSE stands for vDPA device in Userspace, it enables
> implementing a Virtio device in userspace and have it
> attached to the Kernel vDPA bus.
>
> Once attached to the vDPA bus, it can be used either by
> Kernel Virtio drivers, like virtio-net in our case, via
> the virtio-vdpa driver. Doing that, the device is visible
> to the Kernel networking stack and is exposed to userspace
> as a regular netdev.
>
> It can also be exposed to userspace thanks to the
> vhost-vdpa driver, via a vhost-vdpa chardev that can be
> passed to QEMU or Virtio-user PMD.
>
> While VDUSE support is already available in upstream
> Kernel, a couple of patches are required to support
> network device type:
>
> https://gitlab.com/mcoquelin/linux/-/tree/vduse_networking_rfc
>
> In order to attach the created VDUSE device to the vDPA
> bus, a recent iproute2 version containing the vdpa tool is
> required.
>
> Benchmark results:
> ==================
>
> On this v2, PVP reference benchmark has been run & compared with
> Vhost-user.
>
> When doing macswap forwarding in the worload, no difference is seen.
> When doing io forwarding in the workload, we see 4% performance
> degradation with VDUSE, comapred to Vhost-user/Virtio-user. It is
> explained by the use of the IOTLB layer in the Vhost-library when using
> VDUSE, whereas Vhost-user/Virtio-user does not make use of it.
>
> Usage:
> ======
>
> 1. Probe required Kernel modules
> # modprobe vdpa
> # modprobe vduse
> # modprobe virtio-vdpa
>
> 2. Build (require vduse kernel headers to be available)
> # meson build
> # ninja -C build
>
> 3. Create a VDUSE device (vduse0) using Vhost PMD with
> testpmd (with 4 queue pairs in this example)
> # ./build/app/dpdk-testpmd --no-pci --
> vdev=net_vhost0,iface=/dev/vduse/vduse0,queues=4 --log-level=*:9 -- -i --
> txq=4 --rxq=4
>
> 4. Attach the VDUSE device to the vDPA bus
> # vdpa dev add name vduse0 mgmtdev vduse
> => The virtio-net netdev shows up (eth0 here)
> # ip l show eth0
> 21: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP
> mode DEFAULT group default qlen 1000
> link/ether c2:73:ea:a7:68:6d brd ff:ff:ff:ff:ff:ff
>
> 5. Start/stop traffic in testpmd
> testpmd> start
> testpmd> show port stats 0
> ######################## NIC statistics for port 0
> ########################
> RX-packets: 11 RX-missed: 0 RX-bytes: 1482
> RX-errors: 0
> RX-nombuf: 0
> TX-packets: 1 TX-errors: 0 TX-bytes: 62
>
> Throughput (since last show)
> Rx-pps: 0 Rx-bps: 0
> Tx-pps: 0 Tx-bps: 0
>
> ##########################################################################
> ##
> testpmd> stop
>
> 6. Detach the VDUSE device from the vDPA bus
> # vdpa dev del vduse0
>
> 7. Quit testpmd
> testpmd> quit
>
> Known issues & remaining work:
> ==============================
> - Fix issue in FD manager (still polling while FD has been removed)
> - Add Netlink support in Vhost library
> - Support device reconnection
> -> a temporary patch to support reconnection via a tmpfs file is
> available,
> upstream solution would be in-kernel and is being developed.
> -> https://gitlab.com/mcoquelin/dpdk-next-virtio/-
> /commit/5ad06ce14159a9ce36ee168dd13ef389cec91137
> - Support packed ring
> - Provide more performance benchmark results
>
> Changes in v5:
> ==============
> - Delay starting/stopping the device to after having replied to the VDUSE
> event in order to avoid a deadlock encountered when testing with OVS.
Could you explain more to help me understand the deadlock issue?
Thanks,
Chenbo
> - Mention reconnection support lack in the release note.
>
> Changes in v4:
> ==============
> - Applied patch 1 and patch 2 from v3
> - Rebased on top of Eelco series
> - Fix coredump clear in IOTLB cache removal (David)
> - Remove uneeded ret variable in vhost_vring_inject_irq (David)
> - Fixed release note (David, Chenbo)
>
> Changes in v2/v3:
> =================
> - Fixed mem_set_dump() parameter (patch 4)
> - Fixed accidental comment change (patch 7, Chenbo)
> - Change from __builtin_ctz to __builtin_ctzll (patch 9, Chenbo)
> - move change from patch 12 to 13 (Chenbo)
> - Enable locks annotation for control queue (Patch 17)
> - Send control queue notification when used descriptors enqueued (Patch 17)
> - Lock control queue IOTLB lock (Patch 17)
> - Fix error path in virtio_net_ctrl_pop() (Patch 17, Chenbo)
> - Set VDUSE dev FD as NONBLOCK (Patch 18)
> - Enable more Virtio features (Patch 18)
> - Remove calls to pthread_setcancelstate() (Patch 22)
> - Add calls to fdset_pipe_notify() when adding and deleting FDs from a set
> (Patch 22)
> - Use RTE_DIM() to get requests string array size (Patch 22)
> - Set reply result for IOTLB update message (Patch 25, Chenbo)
> - Fix queues enablement with multiqueue (Patch 26)
> - Move kickfd creation for better logging (Patch 26)
> - Improve logging (Patch 26)
> - Uninstall cvq kickfd in case of handler installation failure (Patch 27)
> - Enable CVQ notifications once handler is installed (Patch 27)
> - Don't advertise multiqueue and control queue if app only request single
> queue pair (Patch 27)
> - Add release notes
>
> Maxime Coquelin (26):
> vhost: fix IOTLB entries overlap check with previous entry
> vhost: add helper of IOTLB entries coredump
> vhost: add helper for IOTLB entries shared page check
> vhost: don't dump unneeded pages with IOTLB
> vhost: change to single IOTLB cache per device
> vhost: add offset field to IOTLB entries
> vhost: add page size info to IOTLB entry
> vhost: retry translating IOVA after IOTLB miss
> vhost: introduce backend ops
> vhost: add IOTLB cache entry removal callback
> vhost: add helper for IOTLB misses
> vhost: add helper for interrupt injection
> vhost: add API to set max queue pairs
> net/vhost: use API to set max queue pairs
> vhost: add control virtqueue support
> vhost: add VDUSE device creation and destruction
> vhost: add VDUSE callback for IOTLB miss
> vhost: add VDUSE callback for IOTLB entry removal
> vhost: add VDUSE callback for IRQ injection
> vhost: add VDUSE events handler
> vhost: add support for virtqueue state get event
> vhost: add support for VDUSE status set event
> vhost: add support for VDUSE IOTLB update event
> vhost: add VDUSE device startup
> vhost: add multiqueue support to VDUSE
> vhost: add VDUSE device stop
>
> doc/guides/prog_guide/vhost_lib.rst | 4 +
> doc/guides/rel_notes/release_23_07.rst | 12 +
> drivers/net/vhost/rte_eth_vhost.c | 3 +
> lib/vhost/iotlb.c | 333 +++++++------
> lib/vhost/iotlb.h | 45 +-
> lib/vhost/meson.build | 5 +
> lib/vhost/rte_vhost.h | 17 +
> lib/vhost/socket.c | 72 ++-
> lib/vhost/vduse.c | 646 +++++++++++++++++++++++++
> lib/vhost/vduse.h | 33 ++
> lib/vhost/version.map | 1 +
> lib/vhost/vhost.c | 70 ++-
> lib/vhost/vhost.h | 57 ++-
> lib/vhost/vhost_user.c | 51 +-
> lib/vhost/vhost_user.h | 2 +-
> lib/vhost/virtio_net_ctrl.c | 286 +++++++++++
> lib/vhost/virtio_net_ctrl.h | 10 +
> 17 files changed, 1409 insertions(+), 238 deletions(-)
> create mode 100644 lib/vhost/vduse.c
> create mode 100644 lib/vhost/vduse.h
> create mode 100644 lib/vhost/virtio_net_ctrl.c
> create mode 100644 lib/vhost/virtio_net_ctrl.h
>
> --
> 2.40.1
next prev parent reply other threads:[~2023-06-07 6:48 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-06 8:18 Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 01/26] vhost: fix IOTLB entries overlap check with previous entry Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 02/26] vhost: add helper of IOTLB entries coredump Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 03/26] vhost: add helper for IOTLB entries shared page check Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 04/26] vhost: don't dump unneeded pages with IOTLB Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 05/26] vhost: change to single IOTLB cache per device Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 06/26] vhost: add offset field to IOTLB entries Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 07/26] vhost: add page size info to IOTLB entry Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 08/26] vhost: retry translating IOVA after IOTLB miss Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 09/26] vhost: introduce backend ops Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 10/26] vhost: add IOTLB cache entry removal callback Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 11/26] vhost: add helper for IOTLB misses Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 12/26] vhost: add helper for interrupt injection Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 13/26] vhost: add API to set max queue pairs Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 14/26] net/vhost: use " Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 15/26] vhost: add control virtqueue support Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 16/26] vhost: add VDUSE device creation and destruction Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 17/26] vhost: add VDUSE callback for IOTLB miss Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 18/26] vhost: add VDUSE callback for IOTLB entry removal Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 19/26] vhost: add VDUSE callback for IRQ injection Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 20/26] vhost: add VDUSE events handler Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 21/26] vhost: add support for virtqueue state get event Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 22/26] vhost: add support for VDUSE status set event Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 23/26] vhost: add support for VDUSE IOTLB update event Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 24/26] vhost: add VDUSE device startup Maxime Coquelin
2023-06-08 2:10 ` Xia, Chenbo
2023-06-06 8:18 ` [PATCH v5 25/26] vhost: add multiqueue support to VDUSE Maxime Coquelin
2023-06-06 8:18 ` [PATCH v5 26/26] vhost: add VDUSE device stop Maxime Coquelin
2023-06-08 2:11 ` Xia, Chenbo
2023-06-07 6:48 ` Xia, Chenbo [this message]
2023-06-07 14:58 ` [PATCH v5 00/26] Add VDUSE support to Vhost library Maxime Coquelin
2023-06-08 1:53 ` Xia, Chenbo
2023-06-07 8:05 ` David Marchand
2023-06-08 9:17 ` Maxime Coquelin
2023-06-08 12:44 ` David Marchand
2023-06-08 14:29 ` Maxime Coquelin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=SN6PR11MB35041E06BE8EABADBE2117E19C53A@SN6PR11MB3504.namprd11.prod.outlook.com \
--to=chenbo.xia@intel.com \
--cc=amorenoz@redhat.com \
--cc=cunming.liang@intel.com \
--cc=david.marchand@redhat.com \
--cc=dev@dpdk.org \
--cc=echaudro@redhat.com \
--cc=eperezma@redhat.com \
--cc=fbl@redhat.com \
--cc=jasowang@redhat.com \
--cc=lulu@redhat.com \
--cc=maxime.coquelin@redhat.com \
--cc=mkp@redhat.com \
--cc=xieyongji@bytedance.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).