[openfabrics-ewg] [openib-general] OFED 1.2 features update - RDMA CM etc

[Sean Hefty]

>>>I gather the ucma bits are in rdma_ucm?

Yes.

Basically, I reworked changes that were in svn into separate branches based off 
of 2.6.19.

> 1st is probably to fix the mcast bits so that they don't crash the machine.
> OFED will be based on whatever is merged by Linus by that time + any number of patches
> and out of kernel modules.

Even if the kernel multicast support could make it into 2.6.20, I won't have the 
multicast changes to the rdma_cm done by then.

>>3rd have Sean decide how he wants the multicast support to be integrated 
>>into OFED 1.2, my guess would be as a patch set over the 
>>ib_sa/ipoib/rdma_cm and rdma_ucm but its left for him to decide

Does OFED want the multicast support in 1.2?

> Maybe the right thing is to split the multicast stuff in a separate library,
> or have a separate ABI version for multicast, I don't really know.

My anticipation is that the multicast support will bump the ABI, but will allow 
backwards compatibility.  The break from librdmacm ABI 2 to ABI 3 is a result of 
changing the event reporting.

- Sean