busdma MFC broke ipfw fwd for RELENG_6

[John Baldwin]

On Thursday, September 15, 2011 12:44:32 pm Eugene Grosbein wrote:
> Hi!
> 
> I understand that it is "a bit" late for RELENG_6 reports as 6.4-RELEASE was out in 2008
> but the breakage had happened due to MFC so it's possible same problem exists in newer branches.
> 
> Long story short: I've updated my old 6.4-STABLE system for recent zoneinfo updates
> and found the update broke 'ipfw fwd' feature: forwarded packets get corrupted,
> routed packets go just fine.
> 
> The commit in question has been performed in 2010/08/06:
> http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/i386/i386/Attic/busdma_machdep.c.diff?r1=1.74.2.6;r2=1.74.2.7
> 
> I've rolled it back using recent RELENG_6 sources and packet corruption have disappeared.

It may be a bug in the rl(4) driver?  Perhaps this is a candidate to try?

http://svnweb.freebsd.org/base?view=revision&revision=184240

-- 
John Baldwin