Subject: Re: [PATCH ethtool] ethtool: add support for RSS input transformation

From: Jakub Kicinski <[email-masked]>
Date: Fri, 2 Feb 2024 11:06:14 -0800

On Thu,  1 Feb 2024 13:41:04 -0700 Ahmed Zaki wrote:
> +Sets the RSS input transformation. Currently, only the
> +.B symmetric-xor
> +transformation is supported where the NIC XORs the L3 and/or L4 source and
> +destination fields (as selected by
> +.B --config-nfc rx-flow-hash
> +) before passing them to the hash algorithm. The RSS hash function will
> +then yield the same hash for the other flow direction where the source and
> +destination fields are swapped (i.e. Symmetric RSS). Switch off (default) by
> +.B xfrm none.

Wasn't there supposed to be a warning somewhere saying that it loses
entropy?