Call for testers: Atheros AR8121(L1E)/AR8113/AR8114(L2E)
ethernet
Pyun YongHyeon
pyunyh at gmail.com
Thu Dec 11 19:56:33 PST 2008
On Thu, Dec 11, 2008 at 10:51:23PM -0500, Josh Carroll wrote:
> > I guess it's caused by flow-control frames.
> > The flow-control feature is disabled in most drivers as mii(4)
> > layer still lacks the feture. ale(4) has flow-control support code
> > but it is in disabled state. When mii(4) is ready to handle
> > flow-controls ale(4) may work better.
> > em(4) does not rely on mii(4) layer so it implemented flow-controls
> > in driver. You can check flow-control satus of em(4) with
> > "sysctl dev.em.0.stats=1"(See XON/XOFF).
>
> Hmm, any idea why my previous motherboard (P5K-E) which had an msk(4)
> worked ok without the stuttering for this streaming? I believe it
> relies on mii as well, right?
>
Yes, but msk(4) had hacks in e100phy(4) to enable flow-controls.
I don't want to add these hacks to all other drivers in tree.
> Thanks, I guess I'll stick with the em(4) PCI card, at least until I
> can get a PCI-E em(4). :)
>
> Josh
--
Regards,
Pyun YongHyeon
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