linux-kernel - Re: [PATCH net] net: stmmac: dwmac-socfpga: Set RX watchdog interrupt as broken

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Message-Id: 
 <173261942880.352444.541353075631044825.git-patchwork-notify@kernel.org>
Date: Tue, 26 Nov 2024 11:10:28 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Maxime Chevallier <maxime.chevallier@...tlin.com>
Cc: alexandre.torgue@...s.st.com, joabreu@...opsys.com, andrew+netdev@...n.ch,
 davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
 mcoquelin.stm32@...il.com, alexis.lothore@...tlin.com,
 thomas.petazzoni@...tlin.com, netdev@...r.kernel.org,
 linux-stm32@...md-mailman.stormreply.com,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net] net: stmmac: dwmac-socfpga: Set RX watchdog interrupt as
 broken

Hello:

This patch was applied to netdev/net.git (main)
by Paolo Abeni <pabeni@...hat.com>:

On Fri, 22 Nov 2024 15:12:55 +0100 you wrote:
> On DWMAC3 and later, there's a RX Watchdog interrupt that's used for
> interrupt coalescing. It's known to be buggy on some platforms, and
> dwmac-socfpga appears to be one of them. Changing the interrupt
> coalescing from ethtool doesn't appear to have any effect here.
> 
> Without disabling RIWT (Received Interrupt Watchdog Timer, I
> believe...), we observe latencies while receiving traffic that amount to
> around ~0.4ms. This was discovered with NTP but can be easily reproduced
> with a simple ping. Without this patch :
> 
> [...]

Here is the summary with links:
  - [net] net: stmmac: dwmac-socfpga: Set RX watchdog interrupt as broken
    https://git.kernel.org/netdev/net/c/407618d66dba

You are awesome, thank you!
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