[ofa-general] Loopback connection not working on Chelsio

Steve Wise swise at opengridcomputing.com
Tue Jul 7 06:49:05 PDT 2009


pandit ib wrote:
> Hi,
>
> I'm having trouble getting loopback rdma connections working on Chelsio.
>
> We were told that loopback connections are not supported.
>
> Is this an iWarp or Chelsio specific issue?
>
>   
Chelsio specific.  I don't know if the NES/Intel rnic supports it.

> What are the issues that is preventing it from working?
>
>   
Unfortunately, the Chelsio HW doesn't support RDMA loopback in HW.  And 
there is no software rdma loopback driver in Linux.

> Are there plans for supporting this capability?
>
>   

Although kinda painful, a SW loopback module could be developed.  Anyone 
interested in doing this?


Steve.



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