Re: ifconfig on re0 panics Toshiba Satellite M115-S3094 with RealTek 8101E chipset

["Sepherosa Ziehau" <sepherosa@xxxxxxxxx>]

On 12/20/06, Joe Talbott <josepht@cstone.net> wrote:
> On Tue, Dec 19, 2006 at 08:10:18PM +0800, Sepherosa Ziehau wrote:
> > On 12/19/06, Joe Talbott <josepht@cstone.net> wrote:
> > >
> > >I spent some time this weekend sprinkling if_printf's throughout
> > >re_init() and this is the line where I am having trouble:
> > >
> > >        CSR_WRITE_1(sc, RE_COMMAND, RE_CMD_TX_ENB|RE_CMD_RX_ENB);
> > >
> > >By using your re2.diff and moving this line near the end of re_init()
> > >I am able to get the interface up and functioning with out panics.  I
> > >don't have any documentation than the datasheet publicly available
> > >from Realtek's web page so I'm not sure why this works or if it will
> > >work for the other chips supported by the re(4) driver.  I have a
> > >patch here:
> > >
> > >http://leaf.dragonflybsd.org/~josepht/re.diff
> >
> > Matt's point should be correct here, RTL8101E may access descriptor
> > rings immediately after TX/RX are enabled.  In the current re(4), the
> > descriptor rings' addresses are set after TX/RX are enabled.  I tested
> > your patch on my 8169S, though it works, TX performance is only ~1/2
> > as before, so please test this one:
> > http://leaf.dragonflybsd.org/~sephe/re5.diff
> >
>
> This works.  How are you testing TX performance?

I usually use netperf to measure performance

Cheers,
sephe

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