[ewg] RE: [ofa-general] [PATCH 0/9] RDMAoE - RDMA over Ethernet

[Liran Liss]

>Let's just say that at this point I completely disagree with where
these patches try to abstract the differences, which are many.

>RDMA apps that want to use this and IB without going through an
abstraction will need different code -- just like they would for iWarp,
which also provides RDMA over Ethernet, and is a standard.  IB mad and
SA query modules are not 
>appropriate places for abstracting the differences between IB, iWarp,
and whatever name we give this.

>This could change depending on whether this is really trying to be IB
with a different L2, or is just another RDMA protocol that runs on
Ethernet.

>- Sean

Sean,

These are indeed real concerns; I know that the cma is the natural place
for abstracting transport differences, but I am worried about non-cma
Infiniband ULPs which can work just as well with RDMAoE (perhaps we can
specifically expose RDMAoE "path queries" as a simple library function).

We will rethink our approach to SA queries and post new patches shortly.
Note that without SA query emulation, the RDMAoE patches really amount
to just a few cosmetic changes to ib_core...:)

Thanks for the feedback.
--Liran