[PATCH 1/3] ethdev: add send to kernel action

[Thomas Monjalon]

Hi,

Please don't split ethdev, testpmd and doc in different patches.
They are all very related and may come together in a single patch.

12/09/2022 14:59, Michael Savisko:
> In some cases application may receive a packet that should have been
> received by the kernel. In this case application uses KNI or other means
> to transfer the packet to the kernel.

You should mention bifurcated driver capability:
in isolated mode, with mlx5, we can receive directly in the kernel.
Are we able to do the same with Linux TC rules?

> This commit introduces rte flow action that the application may use
> to route the packet to the kernel while still in the HW.

Should we understand it is the opposite of isolated mode?

[...]
> +	/*
> +	 * Send traffic to kernel.
> +	 */

You should make explicit that the traffic is directed to the kernel,
without going to userspace at all.
A reference to the isolated mode would be worthwhile as well.

> +	RTE_FLOW_ACTION_TYPE_SEND_TO_KERNEL,