linux-kernel - Re: [PATCH net-next] ethtool: ice: Support for RSS settings to GTP from ethtool

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Message-ID: <20231010123235.4a6498da@kernel.org>
Date:   Tue, 10 Oct 2023 12:32:35 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Takeru Hayasaka <hayatake396@...il.com>
Cc:     Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>,
        intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] ethtool: ice: Support for RSS settings to GTP
 from ethtool

On Sun,  8 Oct 2023 07:52:22 +0000 Takeru Hayasaka wrote:
> This is a patch that enables RSS functionality for GTP packets using
> ethtool.
> A user can include her TEID and make RSS work for GTP-U over IPv4 by
> doing the following:
> `ethtool -N ens3 rx-flow-hash gtpu4 sd`
> In addition to gtpu(4|6), we now support gtpc(4|6), gtpu(4|6)e,
> gtpu(4|6)u, and gtpu(4|6)d.

This is for tunneling, right? IDK much about GTP but we don't have flow
types for other tunneling protos. What makes this one special?