linux-kernel - Re: [PATCH v4] virtio_net: Support RX hash XDP hint

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Message-ID: <CACGkMEuaGiH4H3pvjTK5rUh0DmL9ZMsLRaVQ3+5GOfnrj8OxPA@mail.gmail.com>
Date: Thu, 1 Feb 2024 13:37:42 +0800
From: Jason Wang <jasowang@...hat.com>
To: Liang Chen <liangchen.linux@...il.com>
Cc: mst@...hat.com, hengqi@...ux.alibaba.com, xuanzhuo@...ux.alibaba.com, 
	virtualization@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4] virtio_net: Support RX hash XDP hint

On Wed, Jan 31, 2024 at 11:55 AM Liang Chen <liangchen.linux@...il.com> wrote:
>
> The RSS hash report is a feature that's part of the virtio specification.
> Currently, virtio backends like qemu, vdpa (mlx5), and potentially vhost
> (still a work in progress as per [1]) support this feature. While the
> capability to obtain the RSS hash has been enabled in the normal path,
> it's currently missing in the XDP path. Therefore, we are introducing
> XDP hints through kfuncs to allow XDP programs to access the RSS hash.
>
> 1.
> https://lore.kernel.org/all/20231015141644.260646-1-akihiko.odaki@daynix.com/#r
>
> Signed-off-by: Liang Chen <liangchen.linux@...il.com>
> Reviewed-by: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>

Acked-by: Jason Wang <jasowang@...hat.com>

Thanks