[openib-general] RDMA connection and address translation API

[Tom Tucker]

> -----Original Message-----
> From: Roland Dreier [mailto:rolandd at cisco.com] 
> Sent: Wednesday, August 24, 2005 11:27 AM
> To: Tom Tucker
> Cc: Roland Dreier; openib-general at openib.org
> Subject: Re: [openib-general] RDMA connection and address 
> translation API
> 
>     Tom> I think I understand, but the purpose of specifying the IP
>     Tom> address in the listen is not to filter incoming connect
>     Tom> requests, but rather to determine which devices I listen
>     Tom> on. I think this works for the IB case as well. So the
>     Tom> utility of the IP address specified in the listen is only to
>     Tom> determine which devices the sid is created on. Does this make
>     Tom> sense or am I missing something?
> 
> Well, that's not what I would expect.  Suppose I have a 
> device configured with local addresses 192.168.11.12 and 
> 192.168.98.99 and I start listening for some service at the 
> address 192.168.11.12.  I don't think I should see a 
> connection request if a remote system tries to connect to 
> 192.168.98.99 (even though it's the same network interface as 
> 192.168.11.12).
> 
>  - R.
> 
Good point, although for iWARP it will work that way that you expect.
For IB, admitedly it's more complex and would require ATS. There seems
to be significant reluctance around ATS and I don't understand the
issues. Can you provide a quick synopsis?