Date: Fri, 16 Sep 2011 11:45:25 +0700 From: Eugene Grosbein <egrosbein@rdtc.ru> To: pyunyh@gmail.com Cc: stable@freebsd.org, John Baldwin <jhb@freebsd.org>, yongari@freebsd.org Subject: Re: busdma MFC broke ipfw fwd for RELENG_6 Message-ID: <4E72D465.8050900@rdtc.ru> In-Reply-To: <20110915191944.GB6557@michelle.cdnetworks.com> References: <4E722B70.9010201@rdtc.ru> <201109151314.50549.jhb@freebsd.org> <4E7238C3.1060008@rdtc.ru> <20110915181524.GA6557@michelle.cdnetworks.com> <4E724BCD.4040607@rdtc.ru> <20110915191944.GB6557@michelle.cdnetworks.com>
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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. --- if_re.c.orig 2008-03-02 21:54:48.000000000 +0700 +++ if_re.c 2011-09-16 11:37:30.000000000 +0700 @@ -1077,7 +1077,7 @@ nseg = 32; error = bus_dma_tag_create(sc->rl_parent_tag, ETHER_ALIGN, 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, - NULL, MCLBYTES * nseg, nseg, MCLBYTES, BUS_DMA_ALLOCNOW, + NULL, MCLBYTES * nseg, nseg, MCLBYTES, 0, NULL, NULL, &sc->rl_ldata.rl_mtag); if (error) { device_printf(dev, "could not allocate dma tag\n");
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