linux-kernel - Re: [PATCH 1/2] stmmac: introduce flag to dynamically disable TX offload for rockchip devices

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Date:   Wed, 03 Apr 2019 01:48:16 +0300
From:   "Leonidas P. Papadakos" <papadakospan@...il.com>
To:     Robin Murphy <robin.murphy@....com>
Cc:     Jose Abreu <jose.abreu@...opsys.com>,
        Philipp Tomsich <philipp.tomsich@...obroma-systems.com>,
        Heiko Stübner <heiko@...ech.de>,
        Christoph Müllner 
        <christoph.muellner@...obroma-systems.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        netdev@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Klaus Goger <klaus.goger@...obroma-systems.com>
Subject: Re: [PATCH 1/2] stmmac: introduce flag to dynamically disable TX
 offload for rockchip devices

I can confirm that snps,no-pbl-x8, currently set by uboot for the fdt
basically fixes the tx-checksumming issue.
I get 700~800 Mbps myself but that might come down to the setup.
You could say it affects performance slightly, as I saw in a previous 
email.

Without the setting The rate consistently drops to 0.
ethtool reports tx-checksumming is on in both cases

Pretty cool!
Does that give you guys an idea on how to tackle it "officially"?