[ofa-general] [RFP] support for iWARP requirement - active connect side MUST send first FPDU

[Steve Wise]

Roland Dreier wrote:
>  > iWARP, has a requirement that the active side of the connection MUST
>  > be the first to send the first FPDU (SEND or RDMA operation). This
>  > presents a problem with applications written for uDAPL and OFA verbs
>  > given that there is no such restriction. So, short of requiring every
>  > OFA application/ULP to adhere to this restriction, we need the iWARP
>  > vendors to come up with a standard method to remove the restriction.
> 
> I actually don't see a problem with just documenting that verbs
> consumers that want to work on top of iWARP must follow the documented
> iWARP rules.
> 

That is what I've been trying to push.  Both MVAPICH2 and OMPI have been 
open to adjusting their transports to adhere to this requirement.

I wouldn't mind implementing something to enforce this in the IWCM or 
the iWARP drivers IF there was a clean way to do it.  So far there 
hasn't been a clean way proposed.