netdev - RE: problems with e1000 and flow control

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Message-ID: <36D9DB17C6DE9E40B059440DB8D95F52047FCD70@orsmsx418.amr.corp.intel.com>
Date:	Tue, 26 Feb 2008 10:10:09 -0800
From:	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>
To:	"Wolfgang Walter" <wolfgang.walter@...dentenwerk.mhn.de>,
	<netdev@...r.kernel.org>
Cc:	<e1000-devel@...ts.sourceforge.net>
Subject: RE: problems with e1000 and flow control

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.

Thanks for the input, 
 Jesse
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