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Message-ID: <Y+AM0VXW54YbvsRT@pop-os.localdomain>
Date: Sun, 5 Feb 2023 12:08:49 -0800
From: Cong Wang <xiyou.wangcong@...il.com>
To: Bobby Eshleman <bobby.eshleman@...edance.com>
Cc: Stefan Hajnoczi <stefanha@...hat.com>,
Stefano Garzarella <sgarzare@...hat.com>,
"Michael S. Tsirkin" <mst@...hat.com>,
Jason Wang <jasowang@...hat.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Andrii Nakryiko <andrii@...nel.org>,
Mykola Lysenko <mykolal@...com>,
Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
Martin KaFai Lau <martin.lau@...ux.dev>,
Song Liu <song@...nel.org>, Yonghong Song <yhs@...com>,
John Fastabend <john.fastabend@...il.com>,
KP Singh <kpsingh@...nel.org>,
Stanislav Fomichev <sdf@...gle.com>,
Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>,
Shuah Khan <shuah@...nel.org>,
Bobby Eshleman <bobbyeshleman@...il.com>,
linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
bpf@...r.kernel.org, linux-kselftest@...r.kernel.org,
jakub@...udflare.com, hdanton@...a.com, cong.wang@...edance.com
Subject: Re: [PATCH RFC net-next v2 0/3] vsock: add support for sockmap
On Mon, Jan 30, 2023 at 08:35:11PM -0800, Bobby Eshleman wrote:
> Add support for sockmap to vsock.
>
> We're testing usage of vsock as a way to redirect guest-local UDS requests to
> the host and this patch series greatly improves the performance of such a
> setup.
>
> Compared to copying packets via userspace, this improves throughput by 121% in
> basic testing.
>
> Tested as follows.
>
> Setup: guest unix dgram sender -> guest vsock redirector -> host vsock server
> Threads: 1
> Payload: 64k
> No sockmap:
> - 76.3 MB/s
> - The guest vsock redirector was
> "socat VSOCK-CONNECT:2:1234 UNIX-RECV:/path/to/sock"
> Using sockmap (this patch):
> - 168.8 MB/s (+121%)
> - The guest redirector was a simple sockmap echo server,
> redirecting unix ingress to vsock 2:1234 egress.
> - Same sender and server programs
>
> *Note: these numbers are from RFC v1
>
> Only the virtio transport has been tested. The loopback transport was used in
> writing bpf/selftests, but not thoroughly tested otherwise.
>
> This series requires the skb patch.
>
Looks good to me. Definitely good to go as non-RFC.
Thanks.
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