[rds-devel] [ofa-general] [PATCH RFC] rds: add iwarp support

[Or Gerlitz]

Olaf Kirch wrote:
> Okay, there's a third way to fix this, which may even work with today's Oracle IPC code. The hack is to not submit the fastreg WR until we post a SEND that transmits the rkey to a peer. Then
>
>  -	we have a QP to post the WRs to
>  -	we post the fastreg and the SEND to the same QP,
> 	ensuring that the peer doesn't initiate the RDMA
> 	before we've set up the memory registration.
Yes, as Steve noted, using the same QP for the fastreg and send that 
carries the rkey/stag is a must since the send should be fenced on the 
fastreg completion to make sure the remote side uses a valid key.

Or.