On Fri, Oct 22, 2004 at 01:29:55AM -0700, Eugene Surovegin wrote: > FWIW, I haven't seen any problems when testing my new EMAC driver with > 100Mb hub, maybe it's only 10Mb related. > > Anyway, this is first time I'm hearing about half duplex problems, > Matt just mentioned them on IRC to me. > > I'll try to do some tests this weekend, although I have to admit half > duplex doesn't seem very important these days, nevertheless, if this > can be fixed, we better do this :).
OK, I did some tests with 2.4.28-pre4, 2.6.9 & 2.6.9-emac (2.6.9 with my new EMAC driver). I used Ocotea rev.3 with 440GX rev.C (533MHz). I can confirm I see some problems in 10HDX mode - there is visible slow down during system boot up (NFS root). Just after logging into system, nfsstat shows around 350 retransmits. My 2.6.9-emac tree doesn't show this behavior, I see no visible slow-down and nfsstat shows 0 retransmits. I tried some quick hacks for 2.6.9 driver but was unable to find settings which could help (my new driver was almost re-written from scratch and I did a lot of things differently). For *adventurous*, this new EMAC driver is available as a patch against 2.6.9 BK tree at http://kernel.ebshome.net/. Please, note, it's still project in progress and it lacks support for all new 440GX features (GigE, TAH, jumbo frames, EMAC2/EMAC3). This is NAPI version with correct (I hope) error handling, chip access etc. On Ebony I was able to route around 144Kpps. I plan to implement support for _some_ 440GX new features soon (during next month, hopefully). If there is an interest, I can make a patch against current 2.4 BK tree, but this will take some time (I'm a little swamped right now). -- Eugene
