netdev - Re: problems with e1000 and flow control

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Message-ID: <47C46332.7040403@intel.com>
Date:	Tue, 26 Feb 2008 11:06:26 -0800
From:	"Kok, Auke" <auke-jan.h.kok@...el.com>
To:	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>
CC:	Wolfgang Walter <wolfgang.walter@...dentenwerk.mhn.de>,
	netdev@...r.kernel.org, e1000-devel@...ts.sourceforge.net
Subject: Re: problems with e1000 and flow control

Brandeburg, Jesse wrote:
> Wolfgang Walter wrote:
>> it seems that e1000 enables flow-control (rx pause frames) even if
>> the switch does not advertise flow control. This seems to get a
>> problem as (at least some) switches then forward pause frames
>> directed to the card from other hosts. We think there are hosts which
>> indeed do this in the lans of our student halls.
>>
>> I think flow control should be completely disabled by default if the
>> switch does not advertise it. It still can be forced with ethtool.
> 
> We agree, and our latest standalone drivers have taken this into
> account, but the kernel drivers have not been updated all the way yet to
> fix this issue.

ok, that explains what is going on :)

I'll take a look into getting these changes upstream. Perhaps Wolfgang can confirm
that the driver on e1000.sf.net is properly working for him?

Auke
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