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[RFC PATCH 0/3] Vhost-vdpa Shadow Virtqueue RSS Support
From: |
Hawkins Jiawei |
Subject: |
[RFC PATCH 0/3] Vhost-vdpa Shadow Virtqueue RSS Support |
Date: |
Fri, 11 Aug 2023 23:28:41 +0800 |
This series enables shadowed CVQ to intercept RSS command
through shadowed CVQ, update the virtio NIC device model
so qemu send it in a migration, and the restore of that
RSS state in the destination.
Note that this patch should be based on
patch "Vhost-vdpa Shadow Virtqueue Hash calculation Support" at [1].
[1]. cover.1691762906.git.yin31149@gmail.com/">https://lore.kernel.org/all/cover.1691762906.git.yin31149@gmail.com/
TestStep
========
1. test the migration using vp-vdpa device
- For L0 guest, boot QEMU with two virtio-net-pci net device with
`in-qemu` RSS, command line like:
-netdev tap,vhost=off...
-device virtio-net-pci,disable-legacy=on,disable-modern=off,
iommu_platform=on,mq=on,ctrl_vq=on,hash=on,rss=on,guest_announce=off,
indirect_desc=off,queue_reset=off,...
- For L1 guest, apply the relative patch series and compile the
source code, start QEMU with two vdpa device with svq mode on,
enable the `ctrl_vq`, `mq`, `rss` features on, command line like:
-netdev type=vhost-vdpa,x-svq=true,...
-device virtio-net-pci,mq=on,guest_announce=off,ctrl_vq=on,
rss=on,...
- For L2 source guest, run the following bash command:
```bash
#!/bin/sh
ethtool -K eth0 rxhash on
```
- Execute the live migration in L2 source monitor
- Result
* with this series, L2 QEMU can execute without
triggering any error or warning. L0 QEMU echo
"Can't load eBPF RSS - fallback to software RSS".
Hawkins Jiawei (3):
vdpa: Add SetSteeringEBPF method for NetClientState
vdpa: Restore receive-side scaling state
vdpa: Allow VIRTIO_NET_F_RSS in SVQ
net/vhost-vdpa.c | 62 ++++++++++++++++++++++++++++++++++--------------
1 file changed, 44 insertions(+), 18 deletions(-)
--
2.25.1
- [RFC PATCH 0/3] Vhost-vdpa Shadow Virtqueue RSS Support,
Hawkins Jiawei <=