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

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Message-Id: <1555409017.1234.0@gmail.com>
Date:   Tue, 16 Apr 2019 13:03:37 +0300
From:   "Leonidas P. Papadakos" <papadakospan@...il.com>
To:     Jose Abreu <jose.abreu@...opsys.com>
Cc:     Robin Murphy <robin.murphy@....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

txpbl <0x4> (without the no-pbl-x8 option) is the last value where I 
can change the MTU without a timeout.
I've also tried <0x20> with and without no-pbl-x8 but in that area MTU 
is a hot potato.

Seems pretty good though, I'll keep poking to see if it's stable.
currently at txbpl <0x4> by iself I get tx max 934 average 916 Mbps

IT does fluctuate at times but mostly there.