[openib-general] RDMA connection and address translation API

[Caitlin Bestler]

Good point. But that's about wire behavior, not what an application sees.

And yes, the RDMA device must behave as though its IP layer
were part of the host stack. That is a strong argument for
standardizing many of those interactions rather than relying
on fully compliant parallel processing.
 

-----Original Message-----
From: Christoph Hellwig [mailto:hch at lst.de] 
Sent: Thursday, August 25, 2005 1:52 AM
To: Caitlin Bestler
Cc: Christoph Hellwig; openib-general at openib.org
Subject: Re: [openib-general] RDMA connection and address translation API

On Wed, Aug 24, 2005 at 02:22:31PM -0700, Caitlin Bestler wrote:
> Not if the host connects two disjoint networks and does not route 
> between them. Such a host should/may be configured to reject any 
> packet that arrives with a destination address that does not match the 
> expected destination address for the port it arrives upon.

While you can configure a Linux system to reject such request through a bunch
of crude hacks, the default and fully RFC compliant behaviour is to always
reply to ARP requests for any IP address assigned to the system.  RDMA CM
implementations must work the same.