Subject: Re: tlp won't do full duplex
To: Jim Bernard <firstname.lastname@example.org>
From: Jason R Thorpe <email@example.com>
Date: 07/02/2000 10:25:59
On Sun, Jul 02, 2000 at 11:09:30AM -0600, Jim Bernard wrote:
> > Note that if you have tlp-supported card that uses a separate PHY, then
> > all this works correctly (mostly because the PHYs are *MUCH* easier
> > to program).
> > Now, wrt. it failing to work when you hard-wire 100TX-FDX on the tlp
> > end, blame the badly specified IEEE 802.3u standard.
> Does that mean that the card isn't responding properly to what the driver
> is telling it, but there still might be some hope of figuring out a way to
> make the card stay full duplex when ifconfig requests full duplex?
No, it means the driver isn't programming the card correctly to do
the autonegotiation. Using the built-in NWAY block on 21143 and
the clone chips can be fairly complicated to get right. It's just
a difficult programming interface.
> Is there a straightforward way to patch the driver to not change the
> autonegotiated settings (recall that the full-duplex light on the switch
> is on until ifconfig runs)?
No. There is not.
-- Jason R. Thorpe <firstname.lastname@example.org>