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Date: Wed, 17 Sep 2008 15:03:36 -0400
From: David Schultz <das@FreeBSD.ORG>
To: Ian Freislich <ianf@clue.co.za>
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Cc: current@FreeBSD.ORG
Subject: Re: msk(4) issues
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On Wed, Sep 17, 2008, Ian Freislich wrote:
> Hi
> 
> I'm having an issue with the msk hardware in my laptop.  It stops
> transmitting or recieving sometimes, always triggered by periods
> of intense network load.
> 
> Sep 16 18:39:31 apple kernel: msk0: watchdog timeout (missed Tx interrupts) -- recovering
> Sep 16 18:40:35 apple kernel: msk0: watchdog timeout (missed Tx interrupts) -- recovering
> Sep 16 18:41:41 apple kernel: msk0: watchdog timeout (missed Tx interrupts) -- recovering
> 
> But it never recovers.

I have the same problem. Disabling MSI reduces the frequency with
which it occurs from once a day to once a month or so.

You can recover the card without rebooting by loading the msk
driver as a kld, then unloading and reloading it to reset the
card. Of course this is a hack, but I haven't bothered to look
into anything better yet.