[openib-general] [PATCHv2] IPoIB CM Experimental support

[Shirley Ma]

"Michael S. Tsirkin" <mst at mellanox.co.il> wrote on 12/14/2006 09:14:38 PM:

> > Hi, Michael,
> >
> > Tried this patch, it didn't work on ehca. I couldn't change the mode
from
> > datagram to connected from /sys/class.
>
> It's wroking as designed in that respect.  ehca does not implement
> srq - without
> srq, there is no way to prepost receive buffers for a resonable number of
> connections without running out of memory.
>
> So it is falling back on datagram mode.
> Talk to ehca guys to implement srq and connected mode will be enabled.
Don't remember SRQ is a MUST for UC mode. Does this patch support devices
with SRQ in RC mode?

> > And when unloading ib_ipoib module, all the connections to that node
gone,
> > rmmod ib_ipoib hung. The kernel is 2.6.19.
>
> Probably a bug in error handling somewhere.
> Post the sysrq t trace and I'll take a look.

I will recreate the problem and post stack trace later.

Thanks
Shirley Ma
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