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From: YongHyeon PYUN <pyunyh@gmail.com>
Date: Fri, 16 Sep 2011 12:13:55 -0700
To: Eugene Grosbein <egrosbein@rdtc.ru>
Message-ID: <20110916191355.GA9916@michelle.cdnetworks.com>
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Cc: stable@freebsd.org, John Baldwin <jhb@freebsd.org>, yongari@freebsd.org
Subject: Re: busdma MFC broke ipfw fwd for RELENG_6
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On Fri, Sep 16, 2011 at 11:45:25AM +0700, Eugene Grosbein wrote:
> 16.09.2011 02:19, YongHyeon PYUN пишет:
> > On Fri, Sep 16, 2011 at 02:02:37AM +0700, Eugene Grosbein wrote:
> >> 16.09.2011 01:15, YongHyeon PYUN пишет:
> >>
> >>> I remember re(4) in 6.x also have a couple of bus_dma(9) bugs. How
> >>> about applying the following revision?
> >>> http://svnweb.freebsd.org/base?view=revision&revision=175337
> >>> Not sure whether it shall apply cleanly.
> >>
> >> It does not and there is too much differences in the code for my skills to apply manually :-)
> >>
> >>> Alternatively try replacing BUS_DMA_ALLOCNOW to 0 in
> >>> bus_dma_tag_create(9).
> >>
> >> I'm not sure I undersdand this right... Do you mean this change?
> > 
> > No, change BUS_DMA_ALLOCNOW used in re(4).
> 
> With clean RELENG_6 sources and the only following patch,
> the problem still persists.
> 

:-(
I have back-ported re(4)/rl(4) for latest 6.x.
http://people.freebsd.org/~yongari/re/6.x/README.txt
Just compile tested and not sure whether it fixes the issue.