Re: [PATCH] lanstreamer: IBM LanStreamer and failing multicast reception

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Bjørn Mork wrote:
Neil Horman <nhorman@xxxxxxxxxx> writes:


Have you been able to determine if the NIC is actually not receiving the functionally-address multicast frame, or if its discarding it in the driver?


I don't know how I would test that.  Any suggestions?  I tried
enabling the full packet debugging, but that didn't show any more
packets than tcpdump.  Which is what I'd expect.

I would suggest just putting printk in the driver interrupt handler. Just print out the dest mac of the frame that arrives when an interrupt is asserted. Of course, if you enabled full packet debug in the driver, that may already be there. I haven't looked.
There is of course also a possibility of a failing adapter.  This is
just a single PCI-card.  Allthough it appeares to have a PCI-bridge
with three copies of an ordinary lanstreamer I can't rule out the
possibility that there is some common hardware that make all three
fail.  I just don't know much about it.  Got the card brand new and
shrink-wrapped a few months ago for US$5 (yup, five bucks) on eBay :-)
But it has of course been stored somewhere for the 8 years since it
was produced...


I've got 2 lanstreamers and a MAU here. I'll set this up and try to re-create it. That should keep me from posting any bum fixes again. Sorry :). I'll let you know when I have a workable patch put together.


Thanks for your interest in this.  I must admit that I didn't really
expect anyone to put much work into it.  I just hope I haven't done
stupid, causing the failure myself.

No worries, but don't get your hopes up. I just happen to have the hardware laying about for this, and I respond to token ring issue mostly because people who use token ring still aren't in a rush to have things fixed :) I'll let you know when I have this recreated or working
Neil

Bjørn


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