svn commit: r208995 - stable/7/sys/dev/bge

Pyun YongHyeon pyunyh at
Fri Jul 2 01:57:14 UTC 2010

On Thu, Jul 01, 2010 at 06:28:35PM -0700, Garrett Cooper wrote:
> On Thu, Jul 1, 2010 at 2:52 PM, Pyun YongHyeon <pyunyh at> wrote:
> > On Tue, Jun 29, 2010 at 10:13:45AM -0400, Ken Smith wrote:
> >> On Tue, 2010-06-29 at 09:48 +0200, Anders Nordby wrote:
> >> > Is it possible to get this fix into FreeBSD 7.3-RELEASE?
> >>
> >> We typically rely on developers to decide if fixes might warrant
> >> consideration as an Errata Notice and send email to re@ suggesting
> >> it. ?It's hard for us to judge on our own - factors include things
> >> like the individual developers' confidence level in the fix, etc.
> >>
> >
> > Even though I didn't receive positive feedback from jumbo frame
> > users I'm pretty sure the change set will fix regression introduced
> > in r199011. As you might know, the bug was not detected for a very
> > long time(about 6 months) so I think it's better to wait 2 or 3
> > weeks to get more confidence on the patch.
> If you have jumbo packet functional tests, I'll gladly run it on some
> r200 machines we have in the lab with bge(4) cards sometime in the
> next couple of weeks. If not, I'll have to produce the tests which
> will take longer. I'll see whether or not some of the test code in
> addresses this.

To reproduce the issue you should be able to generate very high
rate of PPS and make kernel resource shortage condition. It would
be hard to trigger the issue with self-clocking protocols like TCP.
Alternatively, patching driver to add intentional delays and
reducing number of available mbufs may help to trigger the issue.

> >> If someone(s) were to send mail to re@ suggesting this be an
> >> Errata Notice given your description here we would definitely
> >> consider it seriously. ?As far as the general process goes that's
> >> the first step.
> Thanks!
> -Garrett

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