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Date: Thu, 10 Dec 2009 02:00:15 +0300 From: Anton Vorontsov <avorontsov@...mvista.com> To: Dave Liu <daveliu@...escale.com> Cc: David Miller <davem@...emloft.net>, linuxppc-dev@...abs.org, netdev@...r.kernel.org, Kumar Gala <galak@...nel.crashing.org> 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. -- Anton Vorontsov email: cbouatmailru@...il.com irc://irc.freenode.net/bd2 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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