Re: [Announce] rxe dev tree available (soft RDMAoE)

Jason Gunthorpe
2009-12-17T23:30:25Z

On Thu, Dec 17, 2009 at 05:00:26PM -0600, Robert Pearson wrote:
> Of course we need to interoperate with ConnectX-en and it, as far as I know,
> only knows how to compute the VCRC as though the packet was going to get
> sent to IB including a phantom 12 byte LRH that is filled with 1's without
> any way to turn it off. It is also a requirement that UD work well too.
> Instead of connection setup if we could get a capability bit in a port info
> record we could handle the general case.

There is no IB management layer (so no port info record) for RDMAoE..

Another good choice might be to not use IPv6 ND and include a
capabilities struct of some sort in a RDMAoE specific ND packet, and,
say, define GRH.nextHeader = 0x2B as meaning 'BTH with no ICRC'

Jason