netdev - Re: [PATCH v2 net-next] r8169: work around an irq coalescing related tx timeout

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Message-Id: <20200518.174647.36183883217230643.davem@davemloft.net>
Date:   Mon, 18 May 2020 17:46:47 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     hkallweit1@...il.com
Cc:     nic_swsd@...ltek.com, kuba@...nel.org, netdev@...r.kernel.org
Subject: Re: [PATCH v2 net-next] r8169: work around an irq coalescing
 related tx timeout

From: Heiner Kallweit <hkallweit1@...il.com>
Date: Mon, 18 May 2020 22:47:16 +0200

> In [0] a user reported reproducible tx timeouts on RTL8168f except
> PktCntrDisable is set and irq coalescing is enabled.
> Realtek told me that they are not aware of any related hw issue on
> this chip version, therefore root cause is still unknown. It's not
> clear whether the issue affects one or more chip versions in general,
> or whether issue is specific to reporter's system.
> Due to this level of uncertainty, and due to the fact that I'm aware
> of this one report only, let's apply the workaround on net-next only.
> After this change setting irq coalescing via ethtool can reliably
> avoid the issue on the affected system.
> 
> [0] https://bugzilla.kernel.org/show_bug.cgi?id=207205
> 
> Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
> ---
> - remove orphaned Reported-by from commit message

Applied.