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.
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%)
- 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. The loopback transport was used in
writing bpf/selftests, but not thoroughly tested otherwise.
This series requires the skb patch.
To: Stefan Hajnoczi <stefanha@xxxxxxxxxx>
To: Stefano Garzarella <sgarzare@xxxxxxxxxx>
To: "Michael S. Tsirkin" <mst@xxxxxxxxxx>
To: Jason Wang <jasowang@xxxxxxxxxx>
To: "David S. Miller" <davem@xxxxxxxxxxxxx>
To: Eric Dumazet <edumazet@xxxxxxxxxx>
To: Jakub Kicinski <kuba@xxxxxxxxxx>
To: Paolo Abeni <pabeni@xxxxxxxxxx>
To: Andrii Nakryiko <andrii@xxxxxxxxxx>
To: Mykola Lysenko <mykolal@xxxxxx>
To: Alexei Starovoitov <ast@xxxxxxxxxx>
To: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
To: Martin KaFai Lau <martin.lau@xxxxxxxxx>
To: Song Liu <song@xxxxxxxxxx>
To: Yonghong Song <yhs@xxxxxx>
To: John Fastabend <john.fastabend@xxxxxxxxx>
To: KP Singh <kpsingh@xxxxxxxxxx>
To: Stanislav Fomichev <sdf@xxxxxxxxxx>
To: Hao Luo <haoluo@xxxxxxxxxx>
To: Jiri Olsa <jolsa@xxxxxxxxxx>
To: Shuah Khan <shuah@xxxxxxxxxx>
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: kvm@xxxxxxxxxxxxxxx
Cc: virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx
Cc: netdev@xxxxxxxxxxxxxxx
Cc: bpf@xxxxxxxxxxxxxxx
Cc: linux-kselftest@xxxxxxxxxxxxxxx
Signed-off-by: Bobby Eshleman <bobby.eshleman@xxxxxxxxxxxxx>
---
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@xxxxxxxxxxxxx>
