Re: [PATCH v5 15/21] virtio-net: Do not clear VIRTIO_NET_F_HASH_REPORT

[Akihiko Odaki]

On 2023/10/30 6:56, Yuri Benditovich wrote:
> This patch allows  VIRTIO_NET_F_HASH_REPORT feature to the adapter whose 
> backend does not have a virtio header and does not have offload features 
> that depend on it.
> The migration between such different systems is very problematic even if 
> it seems successful, such setups are not performance-oriented and 
> especially supporting the hash delivery for them is (IMHO) redundant, it 
> just requires more testing and does not bring any advantage.

Whether the peer has virtio headers or not is irrelevant if 
VIRTIO_NET_F_HASH_REPORT is offloaded or not. Currently QEMU always 
implements hash reporting by itself and does not offload at all.