QE tested this RFC series of patches with virtio-net regression tests,
everything works fine.
Tested-by: Lei Yang <leiyang@redhat.com>
On Thu, Mar 13, 2025 at 2:56 PM Akihiko Odaki <akihiko.odaki@daynix.com> wrote:
>
> I'm proposing to add a feature to offload virtio-net RSS/hash report to
> Linux. This series contain patches to utilize the proposed Linux feature.
> The patches for Linux are available at:
> https://lore.kernel.org/r/20250307-rss-v9-0-df76624025eb@daynix.com/
>
> This work was presented at LPC 2024:
> https://lpc.events/event/18/contributions/1963/
>
> Patch "docs/devel/ebpf_rss.rst: Update for peer RSS" provides comparion
> of existing RSS mechanism and the new one (called "peer RSS") and
> explains how QEMU selects one.
>
> ---
> Changes in v4:
> - Rebased.
> - Added a reference to the documentation to the cover letter.
> - Link to v3: https://lore.kernel.org/r/20240915-hash-v3-0-79cb08d28647@daynix.com
>
> ---
> Akihiko Odaki (11):
> qdev-properties: Add DEFINE_PROP_ON_OFF_AUTO_BIT64()
> net/vhost-vdpa: Report hashing capability
> virtio-net: Move virtio_net_get_features() down
> virtio-net: Retrieve peer hashing capability
> net/vhost-vdpa: Remove dummy SetSteeringEBPF
> virtio-net: Add hash type options
> net: Allow configuring virtio hashing
> virtio-net: Use qemu_set_vnet_hash()
> virtio-net: Offload hashing without vhost
> tap: Report virtio-net hashing support on Linux
> docs/devel/ebpf_rss.rst: Update for peer RSS
>
> docs/devel/ebpf_rss.rst | 23 ++-
> include/hw/qdev-properties.h | 18 +++
> include/hw/virtio/virtio-net.h | 6 +-
> include/net/net.h | 20 +++
> net/tap-linux.h | 2 +
> net/tap_int.h | 3 +
> hw/core/qdev-properties.c | 67 ++++++++-
> hw/net/virtio-net.c | 331 +++++++++++++++++++++++++++++------------
> net/net.c | 14 ++
> net/tap-bsd.c | 10 ++
> net/tap-linux.c | 18 +++
> net/tap-solaris.c | 10 ++
> net/tap-stub.c | 10 ++
> net/tap.c | 15 ++
> net/vhost-vdpa.c | 41 ++++-
> 15 files changed, 478 insertions(+), 110 deletions(-)
> ---
> base-commit: 825b96dbcee23d134b691fc75618b59c5f53da32
> change-id: 20240828-hash-628329a45d4d
>
> Best regards,
> --
> Akihiko Odaki <akihiko.odaki@daynix.com>
>
>