Re: [ewg] broken support for UC in rdma_cm

2010-03-15 Thread Eli Cohen
On Mon, Mar 15, 2010 at 08:38:00AM -0700, Sean Hefty wrote: > > This is really a new feature request, which I may not have time to address. > It > depends on the scope of the changes that are needed. > > If both sides try using UC QPs, do you know what specific setting causes the > connection t

Re: [ewg] broken support for UC in rdma_cm

2010-03-15 Thread Sean Hefty
>I just noticed that Vlad already opened a bugzilla bug (1874) on this. >I quote Sean's response: > >RDMA CM supports UD and RC QPs (port spaces UDP/TCP) only. Support >for UC QPs should come from another port space. > >This makes sense to me. Still we need to address the issues I raised >below. S

Re: [ewg] broken support for UC in rdma_cm

2010-03-15 Thread Eli Cohen
I just noticed that Vlad already opened a bugzilla bug (1874) on this. I quote Sean's response: RDMA CM supports UD and RC QPs (port spaces UDP/TCP) only. Support for UC QPs should come from another port space. This makes sense to me. Still we need to address the issues I raised below. Sean, are

[ewg] broken support for UC in rdma_cm

2010-03-15 Thread Eli Cohen
We got failing tests in our regression that use UC transport from userspace. Looking at cma_connect_ib(), I see that it uses IB_QPT_RC in the CM request instead of using whatever the transport type of the requesting QP. There is no easy way to retrieve that information too since the QP is created i