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Message-ID: <95f324af-88de-4692-966f-588287305e09@gmail.com> Date: Fri, 27 Oct 2023 14:23:13 -0700 From: Florian Fainelli <f.fainelli@...il.com> To: Linus Walleij <linus.walleij@...aro.org>, Andrew Lunn <andrew@...n.ch>, Vladimir Oltean <olteanv@...il.com>, "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com> Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] dsa: tag_rtl4_a: Bump min packet size You would want your subject to be: net: dsa: tag_rtl4_a: Bump min packet size On 10/27/23 13:21, Linus Walleij wrote: > It was reported that the "LuCI" web UI was not working properly > with a device using the RTL8366RB switch. Disabling the egress > port tagging code made the switch work again, but this is not > a good solution as we want to be able to direct traffic to a > certain port. > > It turns out that sometimes, but not always, small packets are > dropped by the switch for no reason. And we are positive that the Ethernet MAC is also properly padding frames before having them ingress the switch? > > If we pad the ethernet frames to a minimum of ETH_FRAME_LEN + FCS > (1518 bytes) everything starts working fine. That is quite unprecedented, either the switch is very bogus or there is something else we do not fully understand... -- Florian
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