netdev - Re: stmmac/RTL8211F/Meson GXBB: TX throughput problems

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Date:   Sun, 13 Nov 2016 20:13:39 +0100
From:   André Roth <neolynx@...il.com>
To:     Jerome Brunet <jbrunet@...libre.com>
Cc:     Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Johnson Leung <r58129@...escale.com>,
        Giuseppe CAVALLARO <peppe.cavallaro@...com>,
        linux-amlogic@...ts.infradead.org,
        Alexandre Torgue <alexandre.torgue@...com>,
        netdev@...r.kernel.org
Subject: Re: stmmac/RTL8211F/Meson GXBB: TX throughput problems


> Andre, the 3.14 kernel you are talking, is it this one ? : 
> https://github.com/hardkernel/linux/tree/odroidc2-3.14.y

yes
 
> Because in drivers/net/phy/realtek.c, they disable EEE, but
> also 1000Base-T Full Duplex advertisement ?
> 
> +	/* disable 1000m adv*/
> +	val = phy_read(phydev, 0x9);
> +	phy_write(phydev, 0x9, val&(~(1<<9)));
> 
> If this is the kernel you are running, you should not be able to have
> ethernet at 1000MB/s ? Or is it in half duplex mode ?

ethtool shows 1000Mb/s Full-Duplex and the bandwith is around 300Mb/s
(as measured by scp). kernel version: 3.14.65-73