netdev - Re: vxlan: how to expose opt-in RFC conformity with unprocessed header flags

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Message-ID: <20240116082357.22daf549@kernel.org>
Date: Tue, 16 Jan 2024 08:23:57 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: Thomas Lamprecht <t.lamprecht@...xmox.com>
Cc: "David S. Miller" <davem@...emloft.net>, Eric Dumazet
 <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>,
 netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: vxlan: how to expose opt-in RFC conformity with unprocessed
 header flags

On Fri, 12 Jan 2024 16:13:22 +0100 Thomas Lamprecht wrote:
> What would be the accepted way to add a switch of making this RFC conform in
> an opt-in way? A module parameter? A sysfs entry? Through netlink?

Thru netlink. My intuition would be to try to add a "ignore
bits" mask, rather than "RFC compliance knob" because RFCs
may have shorter lifespan than kernel's uAPI guarantees..