netdev - Re: [PATCH 2/2] at803x: double check SGMII side autoneg

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Date:   Fri, 28 Oct 2016 17:24:10 -0500
From:   Timur Tabi <timur@...eaurora.org>
To:     Zefir Kurtisi <zefir.kurtisi@...atec.com>, netdev@...r.kernel.org
Subject: Re: [PATCH 2/2] at803x: double check SGMII side autoneg

Zefir Kurtisi wrote:
> +	/* check if the SGMII link is OK. */
> +	if (!(phy_read(phydev, AT803X_PSSR) & AT803X_PSSR_MR_AN_COMPLETE)) {
> +		pr_warn("803x_aneg_done: SGMII link is not ok\n");
> +		aneg_done = 0;

I see this message appear sometimes when bring up the interface via 
ifup.  However, contrary to your patch description, everything seems to 
work:

$ iperf3 -c 192.168.1.1 -t 3600
Connecting to host 192.168.1.1, port 5201
[  4] local 192.168.1.2 port 52640 connected to 192.168.1.1 port 5201
[ ID] Interval           Transfer     Bandwidth       Retr  Cwnd
[  4]   0.00-1.00   sec   109 MBytes   909 Mbits/sec    0    485 KBytes
[  4]   1.00-2.00   sec   108 MBytes   902 Mbits/sec    0    622 KBytes

I wonder if you're impacted with all of the pause frame problems I'm having.

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