From: Florian Westphal <fw@strlen.de>
To: Lynne <dev@lynne.ee>
Cc: Netdev <netdev@vger.kernel.org>, Kuniyu <kuniyu@amazon.com>,
Willemdebruijn Kernel <willemdebruijn.kernel@gmail.com>
Subject: Re: Regarding UDP-Lite deprecation and removal
Date: Mon, 18 Mar 2024 15:10:25 +0100 [thread overview]
Message-ID: <ZfhLUb_b_szay3GG@strlen.de> (raw)
In-Reply-To: <Nt8pHPQ--B-9@lynne.ee>
Lynne <dev@lynne.ee> wrote:
> UDP-Lite was scheduled to be removed in 2025 in commit
> be28c14ac8bbe1ff due to a lack of real-world users, and
> a long-outstanding security bug being left undiscovered.
>
> I would like to open a discussion to perhaps either avoid this,
> or delay it, conditionally.
Is there any evidence UDP-Lite works in practice?
I am not aware of any HW that will peek into L3/L4 payload to figure out
that the 'udplite' payload should be passed up even though it has bad csum.
So, AFAIU L2 FCS/CRC essentially renders entire 'partial csum' premise moot,
stack will never receive udplite frames that are damaged.
Did things change?
next prev parent reply other threads:[~2024-03-18 13:18 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-17 0:34 Regarding UDP-Lite deprecation and removal Lynne
2024-03-18 10:36 ` Paolo Abeni
2024-03-18 10:49 ` Denis Kirjanov
2024-03-18 14:10 ` Florian Westphal [this message]
2024-03-18 17:58 ` Lynne
2024-03-21 10:31 ` Paolo Abeni
2024-03-21 15:41 ` Jakub Kicinski
2024-03-21 8:29 ` Lynne
2024-03-21 11:43 ` Denis Kirjanov
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