[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-Id: <20201228162233.2032571-1-willemdebruijn.kernel@gmail.com>
Date: Mon, 28 Dec 2020 11:22:30 -0500
From: Willem de Bruijn <willemdebruijn.kernel@...il.com>
To: virtualization@...ts.linux-foundation.org
Cc: netdev@...r.kernel.org, mst@...hat.com, jasowang@...hat.com,
Willem de Bruijn <willemb@...gle.com>
Subject: [PATCH rfc 0/3] virtio-net: add tx-hash, rx-tstamp and tx-tstamp
From: Willem de Bruijn <willemb@...gle.com>
RFC for three new features to the virtio network device:
1. pass tx flow hash and state to host, for routing + telemetry
2. pass rx tstamp to guest, for better RTT estimation
3. pass tx tstamp to host, for accurate pacing
All three would introduce an extension to the virtio spec.
I assume this would require opening three ballots against v1.2 at
https://www.oasis-open.org/committees/ballots.php?wg_abbrev=virtio
This RFC is to informally discuss the proposals first.
The patchset is against v5.10. Evaluation additionally requires
changes to qemu and at least one back-end. I implemented preliminary
support in Linux vhost-net. Both patches available through github at
https://github.com/wdebruij/linux/tree/virtio-net-txhash-1
https://github.com/wdebruij/qemu/tree/virtio-net-txhash-1
Willem de Bruijn (3):
virtio-net: support transmit hash report
virtio-net: support receive timestamp
virtio-net: support transmit timestamp
drivers/net/virtio_net.c | 52 +++++++++++++++++++++++++++++++--
include/uapi/linux/virtio_net.h | 23 ++++++++++++++-
2 files changed, 71 insertions(+), 4 deletions(-)
--
2.29.2.729.g45daf8777d-goog
Powered by blists - more mailing lists