[ed] link state constantly going down and up

[M. Warner Losh]

In message: <261c29700904300004k4bc02635m2729a0a54c09c135 at mail.gmail.com>
            Miki <miki.bsd at gmail.com> writes:
: 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.

Thanks.  I'll try to reproduce it here.  I noticed this on one of the
cards, but had trouble reproducing it, but I'll try harder.

Warner