[ofa-general] cmatose fails whereas rping passes on iWarp

[pandit ib]

I'm still seeing the hang.

> I debugged this to see why it hangs.  The problem, as I see it, is in the server side.  The problem is shown in the diagram below (connection set up and tear down are omitted).  Both sides post 10 receive buffers.
>
> 1.                                              Server sends ten messages (not signaled)
> 2.      Client polls recv cq and
>          receives 10 messages
> 3.      Client sends 10 messages
> 4.                                              Server polls the send cq for completions
> 5.                                              Server polls the recv cq for completions
>
> The server hangs in step 4 where it is looking for send completions but there will not be any because the signaled flag was not set in step 1.
>
> ucmatose completes when I change the following line:
>        send_wr.send_flags = 0;
> to
>        send_wr.send_flags = IBV_SEND_SIGNALED;
>
> Don Wood
>
>