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Message-ID: <Y8gL2PjGZltS1Zqg@bullseye>
Date: Wed, 18 Jan 2023 15:10:16 +0000
From: Bobby Eshleman <bobbyeshleman@...il.com>
To: Stefano Garzarella <sgarzare@...hat.com>
Cc: Bobby Eshleman <bobby.eshleman@...edance.com>,
Cong Wang <cong.wang@...edance.com>, kvm@...r.kernel.org,
"Michael S. Tsirkin" <mst@...hat.com>,
Alexei Starovoitov <ast@...nel.org>,
virtualization@...ts.linux-foundation.org,
Song Liu <song@...nel.org>, Eric Dumazet <edumazet@...gle.com>,
Stanislav Fomichev <sdf@...gle.com>,
linux-kselftest@...r.kernel.org, Shuah Khan <shuah@...nel.org>,
Mykola Lysenko <mykolal@...com>,
Daniel Borkmann <daniel@...earbox.net>,
John Fastabend <john.fastabend@...il.com>,
Andrii Nakryiko <andrii@...nel.org>,
Yonghong Song <yhs@...com>, Paolo Abeni <pabeni@...hat.com>,
KP Singh <kpsingh@...nel.org>,
Stefan Hajnoczi <stefanha@...hat.com>,
Jakub Kicinski <kuba@...nel.org>, Hao Luo <haoluo@...gle.com>,
netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
Jiri Olsa <jolsa@...nel.org>, bpf@...r.kernel.org,
Martin KaFai Lau <martin.lau@...ux.dev>,
"David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH RFC 0/3] vsock: add support for sockmap
On Thu, Jan 19, 2023 at 11:49:02AM +0100, Stefano Garzarella wrote:
> Hi Bobby,
>
> On Wed, Jan 18, 2023 at 12:27:39PM -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 221% in
> > basic testing.
>
> Cool, nice series!
>
> >
> > 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 (+221%)
>
> Assuming the absolute value is correct, there is a typo here, it would be
> +121% right?
>
Lol, yes.
> > - The guest redirector was a simple sockmap echo server,
> > redirecting unix ingress to vsock 2:1234 egress.
> > - Same sender and server programs
> >
> > Only the virtio transport has been tested.
>
> I think is fine for now.
>
> > The loopback transport was used in
> > writing bpf/selftests, but not thoroughly tested otherwise.
>
> I did a quick review mainly for vsock stuff.
> Hoping others can take a better look at net/vmw_vsock/vsock_bpf.c, since I'm
> not very familiar with that subsystem.
>
> FYI I will be off the next two weeks (till Feb 7) with limited internet
> access.
>
Roger that.
Thanks,
Bobby
> Thanks,
> Stefano
>
> >
> > This series requires the skb patch.
> >
> > To: Stefan Hajnoczi <stefanha@...hat.com>
> > To: Stefano Garzarella <sgarzare@...hat.com>
> > To: "Michael S. Tsirkin" <mst@...hat.com>
> > To: Jason Wang <jasowang@...hat.com>
> > To: "David S. Miller" <davem@...emloft.net>
> > To: Eric Dumazet <edumazet@...gle.com>
> > To: Jakub Kicinski <kuba@...nel.org>
> > To: Paolo Abeni <pabeni@...hat.com>
> > To: Andrii Nakryiko <andrii@...nel.org>
> > To: Mykola Lysenko <mykolal@...com>
> > To: Alexei Starovoitov <ast@...nel.org>
> > To: Daniel Borkmann <daniel@...earbox.net>
> > To: Martin KaFai Lau <martin.lau@...ux.dev>
> > To: Song Liu <song@...nel.org>
> > To: Yonghong Song <yhs@...com>
> > To: John Fastabend <john.fastabend@...il.com>
> > To: KP Singh <kpsingh@...nel.org>
> > To: Stanislav Fomichev <sdf@...gle.com>
> > To: Hao Luo <haoluo@...gle.com>
> > To: Jiri Olsa <jolsa@...nel.org>
> > To: Shuah Khan <shuah@...nel.org>
> > Cc: linux-kernel@...r.kernel.org
> > Cc: kvm@...r.kernel.org
> > Cc: virtualization@...ts.linux-foundation.org
> > Cc: netdev@...r.kernel.org
> > Cc: bpf@...r.kernel.org
> > Cc: linux-kselftest@...r.kernel.org
> > Signed-off-by: Bobby Eshleman <bobby.eshleman@...edance.com>
> >
> > ---
> > Bobby Eshleman (3):
> > vsock: support sockmap
> > selftests/bpf: add vsock to vmtest.sh
> > selftests/bpf: Add a test case for vsock sockmap
> >
> > drivers/vhost/vsock.c | 1 +
> > include/linux/virtio_vsock.h | 1 +
> > include/net/af_vsock.h | 17 ++
> > net/vmw_vsock/Makefile | 1 +
> > net/vmw_vsock/af_vsock.c | 59 ++++++-
> > net/vmw_vsock/virtio_transport.c | 2 +
> > net/vmw_vsock/virtio_transport_common.c | 22 +++
> > net/vmw_vsock/vsock_bpf.c | 180 +++++++++++++++++++++
> > net/vmw_vsock/vsock_loopback.c | 2 +
> > tools/testing/selftests/bpf/config.x86_64 | 4 +
> > .../selftests/bpf/prog_tests/sockmap_listen.c | 163 +++++++++++++++++++
> > tools/testing/selftests/bpf/vmtest.sh | 1 +
> > 12 files changed, 447 insertions(+), 6 deletions(-)
> > ---
> > base-commit: f12f4326c6a75a74e908714be6d2f0e2f0fd0d76
> > change-id: 20230118-support-vsock-sockmap-connectible-2e1297d2111a
> >
> > Best regards,
> > --
> > Bobby Eshleman <bobby.eshleman@...edance.com>
> >
>
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