netdev - RE: Intel 82574L hang when sending short ethernet packets at 100BaseT

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Message-ID: <061C8A8601E8EE4CA8D8FD6990CEA89130DBB510@ORSMSX102.amr.corp.intel.com>
Date:	Wed, 5 Sep 2012 21:12:20 +0000
From:	"Dave, Tushar N" <tushar.n.dave@...el.com>
To:	Kelvie Wong <kelvie@...e.org>
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"e1000-devel@...ts.sourceforge.net" 
	<e1000-devel@...ts.sourceforge.net>,
	Kelvie Wong <kwong@...ldtech.com>
Subject: RE: Intel 82574L hang when sending short ethernet packets at
 100BaseT

>-----Original Message-----
>From: kelvie@...il.com [mailto:kelvie@...il.com] On Behalf Of Kelvie Wong
>Sent: Wednesday, August 29, 2012 1:46 PM
>To: Dave, Tushar N
>Cc: netdev@...r.kernel.org; e1000-devel@...ts.sourceforge.net; Kelvie Wong
>Subject: Re: Intel 82574L hang when sending short ethernet packets at
>100BaseT
>
>On Wed, Aug 29, 2012 at 1:29 PM, Dave, Tushar N <tushar.n.dave@...el.com>
>wrote:
>> I'm already aware of this issue on PCI/PCI-X parts and e1000 SF driver
>does have this WA implemented. The patch for upstream e1000 driver is
>submitted too which will be accepted soon.
>> I will check with team and see if we need similar WA for PCIe part(s)!
>
>Ah, I see. Thanks for the clarification.

Thanks for your patience.
It is confirmed that minimum 17 bytes of packet size is a HW requirement for all of our PCI/PCI-X/PCIe parts.
Next release of all our drivers (e1000, e1000e , igb and ixgbe)  will have this fixed.

-Tushar