[openib-general] [PATCH 1/2] rdma_cm: add support to join IPOIB multicast groups

[Or Gerlitz]

On 1/24/07, Or Gerlitz <or.gerlitz at gmail.com> wrote:
> On 1/24/07, Sean Hefty <mshefty at ichips.intel.com> wrote:

> > > However, it is possible that an RDMA_PS_IPOIB consumer would want to
> > > talk over ---one-- UD QP with two peers:
> > > 1) IPoIB - multicast traffic
> > > 2) --another-- RDMA CM consumer - unicast traffic

> > After the user joins the multicast group, unicast traffic is still supported.

> no! it is broken since the PS_IPOIB ID/QP that joined/attached the
> multicast group is now using the ipoib broadcast qkey where the PS_UDP
> ID/QP is using the RDMA_UDP_QKEY

OK, i have managed to confuse myself... with the patch you have sent
PS_IPOIB ID does not does support unicast traffic so this all use
scanrio is not possible from the first place.

But, my preferation is not to block RDMA CM use patterns of UD unicast
to UD unicast and UD unicast to UD unicast/multicast etc.

Or.