On 9/10/2015 4:29 PM, Christoph Hellwig wrote:
On Thu, Sep 10, 2015 at 12:50:33PM +0300, Sagi Grimberg wrote:
What I'm more interested in is a way to tell the CM that I only
want routes that are using this ib_device that I got from the first
lookup as all others are useless for me.
I'm not sure I understand what you are aiming for? if you connect to
a single address multiple times you will get the same device because
it is the same route right?
In testing I do get the same all the time, but I don't see anything that
gurantees that in code or documentation.
I think it depends on the routing table.
Think about the case where the routing changes between the calls,
or we're using multipath TCP for example.
That indeed can happen, in fact, if a bond changes its primary iface
you can see different devices.
But I don't think you should support that anyway. Just fail the session
if you see different devices. I don't think that forcing the CM to a
single device would help you as they will probably fail anyway.
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