[openib-general] Re: [PATCH] sdp: replace ip_dev_find withdev_base scan (was Re: ip_dev_find resolution?)

[Sean Hefty]

>> I've never tested the CMA using an address of
>> 127.0.0.1, so I'm not sure what it would do in that case.  I'm also not
>> sure if it makes sense for the CMA to handle that case...
>
>At least for SDP its important: people are used to being able
>to specify 127.0.0.1 and get a loopback connection.
>And in some cases (zcopy), you actually can get good performance out of it.

I agree that this should be supported from the user's perspective, just not sure
if the CMA should perform this functionality.  A higher level ULP could map
127.0.0.1 to a specific IP address before calling the CMA, but I'm not sure
that's any better.  From the CMA's perspective, 127.0.0.1 could just as easily
map to an iWarp device as an Infiniband device.

- Sean