From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Hemminger <shemminger@vyatta.com>
Subject: Re: sky2 still badly broken
Date: Thu, 3 May 2012 08:23:52 -0700
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To: =?ISO-8859-1?B?TmljY29s8g==?= Belli <darkbasic@linuxsystems.it>
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On Thu, 03 May 2012 11:40:10 +0200
Niccol=F2 Belli <darkbasic@linuxsystems.it> wrote:

> Il 02/05/2012 20:56, Stephen Hemminger ha scritto:
> > It could be that your switch doesn't do autonegotiation or flow
> > control. You are getting receive fifo overflow errors.
>=20
> I don't have this problem with other NICs. Also transfer rate is very=
=20
> low (even 2 MB/s sometimes) while I get ~110MB/s with other NICs (and=
=20
> the same switch of course).
>=20
> Niccol=F2

The receiver on some versions of the chip can't keep up with full speed
of 1G bit/sec. The receive  FIFO has hardware issues, and since I don't
work for Marvell, working around the problem is guesswork. Without exac=
t
information all that can be done is have a timeout and blunt force rese=
t
logic. The vendor driver sk98lin has the same brute force logic, but ma=
y
just not print the message.