[ofa-general] Re: oops in cxgb3:t3_l2t_get

[Steve Wise]

Roland Dreier wrote:
>  > The Chelsio RNIC doesn't support loopback rdma connections.  I guess
>  > we'll have to fail addr/route resolution for local addresses.  I
>  > believe other rdma devices do support loopback, so maybe this needs to
>  > be some sort of ib_device attribute or something so the rdma-cma can
>  > fail the resolution based on what the device supports...
> 
> That's unfortunate.  Setting up loopback connections does work at
> least with IB adapters (not sure about nes, don't have HW yet), so yes
> this needs to be something that fails specifically for cxgb3.
> 
>  - R.

Have you ever thought about a SW rdma loopback device?  (call me crazy :)

I mean, can linux map memory from one process to another to do direct 
copies of data for rdma read/write operations?