Date:   Sun, 5 Feb 2023 12:08:49 -0800
From:   Cong Wang <xiyou.wangcong@gmail.com>
To:     Bobby Eshleman <bobby.eshleman@bytedance.com>
Cc:     Stefan Hajnoczi <stefanha@redhat.com>,
        Stefano Garzarella <sgarzare@redhat.com>,
        "Michael S. Tsirkin" <mst@redhat.com>,
        Jason Wang <jasowang@redhat.com>,
        "David S. Miller" <davem@davemloft.net>,
        Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Andrii Nakryiko <andrii@kernel.org>,
        Mykola Lysenko <mykolal@fb.com>,
        Alexei Starovoitov <ast@kernel.org>,
        Daniel Borkmann <daniel@iogearbox.net>,
        Martin KaFai Lau <martin.lau@linux.dev>,
        Song Liu <song@kernel.org>, Yonghong Song <yhs@fb.com>,
        John Fastabend <john.fastabend@gmail.com>,
        KP Singh <kpsingh@kernel.org>,
        Stanislav Fomichev <sdf@google.com>,
        Hao Luo <haoluo@google.com>, Jiri Olsa <jolsa@kernel.org>,
        Shuah Khan <shuah@kernel.org>,
        Bobby Eshleman <bobbyeshleman@gmail.com>,
        linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
        virtualization@lists.linux-foundation.org, netdev@vger.kernel.org,
        bpf@vger.kernel.org, linux-kselftest@vger.kernel.org,
        jakub@cloudflare.com, hdanton@sina.com, cong.wang@bytedance.com
Subject: Re: [PATCH RFC net-next v2 0/3] vsock: add support for sockmap
Message-ID: <Y+AM0VXW54YbvsRT@pop-os.localdomain>
References: <20230118-support-vsock-sockmap-connectible-v2-0-58ffafde0965@bytedance.com>
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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.