[ed] link state constantly going down and up

[Miki]

2009/4/29 M. Warner Losh <imp at bsdimp.com>

> : I have a problem with a D-Link DFE-670TXD which is handled by if_ed :
> : the link state is constantly going down and up :
> : Apr 28 14:21:33 iut-mir-o kernel: ed0: link state changed to DOWN
> : Apr 28 14:21:35 iut-mir-o kernel: ed0: link state changed to UP
> ...
> : the problem appear with the following commit :
> : SVN rev 190643 on 2009-04-02 16:58:45Z by imp (CVS rev 1.126)
> : I do not see any link state change if I revert the commit.
>
> Doh!
>
> I needed to force auto negotiation for other cards to work.  Let me
> see if I can dig up the DFE-670TXD and go from there...  Are you also
> seeing really horrible network performance as well?  Do you see this
> only under load, or just at idle?
>
> Warner
>

Yes network performance suffers from this. The problem only appears under
load
but not when idle.

Mikael