From: David Miller <davem@davemloft.net>
To: shemminger@vyatta.com
Cc: jarkao2@gmail.com, netdev@vger.kernel.org
Subject: Re: [PATCH 02/11] sky2: fix DMA sync_single length error
Date: Wed, 20 Jan 2010 16:15:34 -0800 (PST) [thread overview]
Message-ID: <20100120.161534.173867444.davem@davemloft.net> (raw)
In-Reply-To: <20100120160407.3a365a92@nehalam>
From: Stephen Hemminger <shemminger@vyatta.com>
Date: Wed, 20 Jan 2010 16:04:07 -0800
> The usage of jumbo frames on the Marvell Yukon-2 chip version that
> Michael has is suspect. In order to do Jumbo frames, the driver has
> turns off the store-forward buffer; this reduces the window for transmit
> underrun, and triggers a problem. I suspect the unwind logic for
> transmit underrun is broken and may not be fixable without more hardware
> information. Turning off jumbo frame support for that chip type
> is probably the safest solution.
So let's do that.
Meanwhile I think the DMA debugging patch you posted earlier today
need a little work, will reply there.
next prev parent reply other threads:[~2010-01-21 0:15 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-20 20:44 [PATCH 00/11] DMA sync errors Stephen Hemminger
2010-01-20 20:45 ` [PATCH 01/11] tg3: fix DMA sync_single length error Stephen Hemminger
2010-01-20 20:45 ` [PATCH 02/11] sky2: " Stephen Hemminger
2010-01-20 21:32 ` Jarek Poplawski
2010-01-20 22:52 ` David Miller
2010-01-20 23:21 ` Jarek Poplawski
2010-01-20 23:34 ` David Miller
2010-01-20 23:41 ` David Miller
2010-01-20 23:59 ` Jarek Poplawski
2010-01-21 0:04 ` Stephen Hemminger
2010-01-21 0:15 ` David Miller [this message]
2010-01-20 23:52 ` Jarek Poplawski
2010-01-20 23:56 ` David Miller
2010-01-20 20:45 ` [PATCH 03/11] skge: " Stephen Hemminger
2010-01-20 20:45 ` [PATCH 04/11] r8169: " Stephen Hemminger
2010-01-20 20:45 ` [PATCH 05/11] rrunner: " Stephen Hemminger
2010-01-20 20:45 ` [PATCH 06/11] de2104x: " Stephen Hemminger
2010-01-22 1:02 ` Grant Grundler
2010-01-22 1:12 ` Stephen Hemminger
2010-01-20 20:45 ` [PATCH 07/11] sungem: " Stephen Hemminger
2010-01-20 20:45 ` [PATCH 08/11] sunhme: " Stephen Hemminger
2010-01-20 20:45 ` [PATCH 09/11] cassini: " Stephen Hemminger
2010-01-20 20:45 ` [PATCH 10/11] cxgb3: " Stephen Hemminger
2010-01-20 20:45 ` [PATCH 11/11] ipoib: " Stephen Hemminger
2010-01-20 22:46 ` [PATCH 00/11] DMA sync errors David Miller
2010-01-20 23:28 ` Stephen Hemminger
2010-01-21 0:18 ` David Miller
2010-01-21 0:34 ` Stephen Hemminger
2010-01-21 0:36 ` David Miller
2010-01-21 12:44 ` Jarek Poplawski
2010-01-21 13:12 ` David Miller
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