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Message-ID: <5927FFAF.40301@aoifes.com>
Date: Fri, 26 May 2017 12:13:03 +0200
From: Rafa Corvillo <rafael.corvillo@...fes.com>
To: Andrew Lunn <andrew@...n.ch>
Cc: Stephen Hemminger <stephen@...workplumber.org>,
netdev@...r.kernel.org
Subject: Re: [ISSUE: sky2 - rx error] Link stops working under heavy traffic
load connected to a mv88e6176
As modifying sky2 code I have not could get any solution, then I have
modified some parameters on the ethernet interface and using a MTU =
1503 and disabling TSO (TCP Segmentation Offload) mechanism all
communication errors disappear, both the rx errors due to too long
packets and tx timeout errors. I have performed iperf tests during 1
hour (downstream and upstream) and the performance of the ethernet is
stable. Furthermore, disabling SG (scatter-gather) improves the
throughput of the ethernet interface with traffic upstream.
Is it possible that these offload mechanism don't work fine with the
sky2 driver?
Thanks,
Rafa
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