busdma MFC broke ipfw fwd for RELENG_6
YongHyeon PYUN
pyunyh at gmail.com
Thu Sep 15 19:19:50 UTC 2011
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).
> This is the only place in busdma_machdep.c where BUS_DMA_ALLOCNOW is used.
>
> --- busdma_machdep.c.orig 2011-09-16 01:56:52.000000000 +0700
> +++ busdma_machdep.c 2011-09-16 01:57:01.000000000 +0700
> @@ -284,7 +284,7 @@
> newtag->flags |= BUS_DMA_COULD_BOUNCE;
>
> if (((newtag->flags & BUS_DMA_COULD_BOUNCE) != 0) &&
> - (flags & BUS_DMA_ALLOCNOW) != 0) {
> + (flags & 0) != 0) {
> struct bounce_zone *bz;
>
> /* Must bounce */
>
> I'm going to lose control on this remote box if I apply wrong patch for re(4).
>
> Eugene Grosbein
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