linux-kernel - Re: [PATCH v3 net] net: phylink: add missing supported link modes for the fixed-link

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] [day] [month] [year] [list]

Message-Id: 
 <176358540651.954142.2378639100953364508.git-patchwork-notify@kernel.org>
Date: Wed, 19 Nov 2025 20:50:06 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Wei Fang <wei.fang@....com>
Cc: linux@...linux.org.uk, andrew@...n.ch, hkallweit1@...il.com,
 davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
 eric@...int.com, maxime.chevallier@...tlin.com, imx@...ts.linux.dev,
 netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 net] net: phylink: add missing supported link modes for
 the
 fixed-link

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@...nel.org>:

On Mon, 17 Nov 2025 18:29:43 +0800 you wrote:
> Pause, Asym_Pause and Autoneg bits are not set when pl->supported is
> initialized, so these link modes will not work for the fixed-link. This
> leads to a TCP performance degradation issue observed on the i.MX943
> platform.
> 
> The switch CPU port of i.MX943 is connected to an ENETC MAC, this link
> is a fixed link and the link speed is 2.5Gbps. And one of the switch
> user ports is the RGMII interface, and its link speed is 1Gbps. If the
> flow-control of the fixed link is not enabled, we can easily observe
> the iperf performance of TCP packets is very low. Because the inbound
> rate on the CPU port is greater than the outbound rate on the user port,
> the switch is prone to congestion, leading to the loss of some TCP
> packets and requiring multiple retransmissions.
> 
> [...]

Here is the summary with links:
  - [v3,net] net: phylink: add missing supported link modes for the fixed-link
    https://git.kernel.org/netdev/net/c/e31a11be41cd

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html