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<p><tt>"Michael S. Tsirkin" <mst@mellanox.co.il> wrote on 12/14/2006 09:14:38 PM:<br>
<br>
> > Hi, Michael,<br>
> > <br>
> > Tried this patch, it didn't work on ehca. I couldn't change the mode from<br>
> > datagram to connected from /sys/class.<br>
> <br>
> It's wroking as designed in that respect. ehca does not implement <br>
> srq - without<br>
> srq, there is no way to prepost receive buffers for a resonable number of<br>
> connections without running out of memory.<br>
> <br>
> So it is falling back on datagram mode.<br>
> Talk to ehca guys to implement srq and connected mode will be enabled.<br>
Don't remember SRQ is a MUST for UC mode. Does this patch support devices with SRQ in RC mode?</tt><br>
<tt><br>
> > And when unloading ib_ipoib module, all the connections to that node gone,<br>
> > rmmod ib_ipoib hung. The kernel is 2.6.19.<br>
> <br>
> Probably a bug in error handling somewhere.<br>
> Post the sysrq t trace and I'll take a look.<br>
<br>
I will recreate the problem and post stack trace later.</tt><br>
<br>
Thanks<br>
Shirley Ma</body></html>