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SubjectRe: NIU - Sun Neptune 10g - Transmit timed out reset (2.6.24)
David Miller wrote:

>From: Matheos Worku <Matheos.Worku@Sun.COM>
>Date: Thu, 29 May 2008 17:14:29 -0700
>>Actually what I am suggesting was a workaround for the lack of "TX Ring
>>Empty" interrupt by not relying on the TX interrupt at all.
>Ahh I see.
>Some of the things I talked about in my presentation here in
>Berlin at LinuxTAG yesterday can help mitigate the effects.
>Most of it revolves around batching, and allowing the driver
>to manage the backlog of packets directly when the TX queue
>fills up.
>In such a case we could batch the TX queue refill, know how many more
>TX packets we will queue up to the chip right now, and therefore know
>that we can safely set periodic MARK bits and only need to force set
>the MARK bit at the very end.
>>As for the TX hang, I will try to reproduce the problem and look at
>>the registers for the clue.
Have been trying but not able to reproduce the timeout. I am using NFS
V3 with TCP. Are you using UDP by any chance?


>Thanks a lot.
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