netdev - RE: ucc_geth: Fix the wrong the Rx/Tx FIFO size

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Message-ID: <D7CCA83BB0796C49BC0BB53B6AB120898BDC0E@zch01exm21.fsl.freescale.net>
Date:	Mon, 4 Jan 2010 11:42:30 +0800
From:	"Liu Dave-R63238" <r63238@...escale.com>
To:	"David Miller" <davem@...emloft.net>
Cc:	<linuxppc-dev@...abs.org>, <netdev@...r.kernel.org>,
	"Kumar Gala" <galak@...nel.crashing.org>,
	<avorontsov@...mvista.com>
Subject: RE: ucc_geth: Fix the wrong the Rx/Tx FIFO size

> On Fri, Nov 27, 2009 at 04:16:43PM +0800, Dave Liu wrote:
> > current the Rx/Tx FIFO size settings cause problem
> > when four UEC ethernets work simultaneously.
> > 
> > eg: GETH1, UEM-J15, GETH2, UEC-J5 on 8569MDS board
> > 
> >  $ ifconfig eth0 10.193.20.166
> >  $ ifconfig eth1 10.193.20.167
> >  $ ifconfig eth2 10.193.20.168
> >  then
> >  $ ifconfig eth3 10.193.20.169
> > 
> > The fourth ethernet will cause all of interface broken,
> > you cann't ping successfully any more.
> > The patch fix this issue for MPC8569 Rev1.0 and Rev2.0
> > 
> > Signed-off-by: Dave Liu <daveliu@...escale.com>
> 
> Acked-by: Anton Vorontsov <avorontsov@...mvista.com>
> 
> Thanks Dave! I see that the new values actually match the QEIWRM
> spec (except UTFS... spec recommends 2048, but it also says that
> it might differ for different memory setups, though that's a
> separate issue).
> 
> And FWIW, I did some quick netperf tests on MPC8360, and the
> patch doesn't cause any problems.

David,

How about this patch? Please consider to pick it up to your tree.

Thanks, Dave
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