This series tries to pick up the work on the virtio-net timestamping
feature from Willem de Bruijn.
Original series
Message-Id: [email protected]
Subject: [PATCH RFC v2 0/4] virtio-net: add tx-hash, rx-tstamp,
tx-tstamp and tx-time
From: Willem de Bruijn <[email protected]>
RFC for four new features to the virtio network device:
1. pass tx flow state to host, for routing + telemetry
2. pass rx tstamp to guest, for better RTT estimation
3. pass tx tstamp to guest, idem
3. pass tx delivery time to host, for accurate pacing
All would introduce an extension to the virtio spec.
The changes in this series are to the driver side. For the changes to qemu see:
https://github.com/strumtrar/qemu/tree/v10.2.0/virtio-rx-stamps
Currently only virtio-net is supported. Performance was tested with
pktgen which doesn't show a decrease in transfer speeds.
As these patches are now mostly different from the initial patchset, I removed
the Signed-off-bys from Willem, so he mustn't be ashamed of what his work
evolved to ;)
Signed-off-by: Steffen Trumtrar <[email protected]>
---
Changes in v2:
- rework patches to use flow filter instead of feature flag
- Link to v1:
https://lore.kernel.org/r/20231218-v6-7-topic-virtio-net-ptp-v1-0-cac92b2d8...@pengutronix.de
---
Steffen Trumtrar (2):
tun: support rx-tstamp
virtio-net: support receive timestamp
drivers/net/tun.c | 30 +++++----
drivers/net/virtio_net.c | 136 ++++++++++++++++++++++++++++++++++++----
include/uapi/linux/virtio_net.h | 9 +++
3 files changed, 151 insertions(+), 24 deletions(-)
---
base-commit: 8f0b4cce4481fb22653697cced8d0d04027cb1e8
change-id: 20231218-v6-7-topic-virtio-net-ptp-3df023bc4f4d
Best regards,
--
Steffen Trumtrar <[email protected]>
