Messages in this thread |  | | Date | Sat, 31 Jul 2004 11:51:13 -0300 | | From | Marcelo Tosatti <> | | Subject | Re: Natsemi ethernet 'cable magic' fix can cause problems |
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On Thu, May 13, 2004 at 10:03:58AM -0700, Tim Hockin wrote: > On Thu, May 13, 2004 at 11:35:03AM +0100, Colin Paton wrote: > > The problem was strange - about 30% packet loss was experienced during > > pings. Moving the box to a different ethernet wall outlet (but still > > using the same port on the switch) cured the problem. The problem > > therefore appeared to be cable dependant. > > > > It would appear that the call to 'do_cable_magic()' in > > drivers/net/natsemi.c causes the problem to occur. > > > > It looks as though this was added in to actually *fix* such problems... > > but in our case it made things worse. > > I'm the responsible party on that one. do_cable_magic() was a direct > result of a significant amount of work with National's engineers to > root-cause some major problems we had had. > > If I recall, the problem we experienced was when the cable was "short" > (where short was < 30m, I think). What can you tell me about your cabling > setup? > > Willing to test? Ping me back.
Hi Tim, Collin,
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