Messages in this thread | | | Date | Fri, 30 May 2008 00:00:09 -0700 (PDT) | Subject | Re: NIU - Sun Neptune 10g - Transmit timed out reset (2.6.24) | From | David Miller <> |
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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.
Thanks a lot.
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