netdev - Re: [PATCH] r8169: add support for 16K jumbo frames on RTL8125B

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <ebe829ef-342a-4986-975a-62194a793697@gmail.com>
Date: Fri, 28 Feb 2025 21:23:33 +0100
From: Heiner Kallweit <hkallweit1@...il.com>
To: Rui Salvaterra <rsalvaterra@...il.com>, nic_swsd@...ltek.com
Cc: netdev@...r.kernel.org
Subject: Re: [PATCH] r8169: add support for 16K jumbo frames on RTL8125B

On 28.02.2025 18:30, Rui Salvaterra wrote:
> It's supported, according to the specifications.
> 
> Signed-off-by: Rui Salvaterra <rsalvaterra@...il.com>
> ---
> 
> It's very likely that other RTL8125x devices also support 16K jumbo frames, but
> I only have RTL8125B ones to test with. Additionally, I've only tested up to 12K
> (my switch's limit).
> 
This has been proposed and discussed before. Decision was to not increase
the max jumbo packet size, as vendor drivers r8125/r8126 also support max 9k.
And in general it's not clear whether you would gain anything from jumbo packets,
because hw TSO and c'summing aren't supported for jumbo packets.