[ovs-dev] Is there a way to get port status directly on kernel module?

Ben Pfaff blp at nicira.com
Wed Feb 19 20:48:23 UTC 2014


On Wed, Feb 19, 2014 at 05:12:22PM -0300, Rafael Duarte Vencioneck wrote:
> I'm thinking about the possibility of fast forwarding without upcalls. If
> the link is down, maybe the module could know someway for what port to
> forward.
> It's really impossible to do that?

It might be possible.  With the "megaflows" feature introduced in
1.11, it's probably not worthwhile, because only a small number of
datapath flows have to be updated, most of the time, to redirect all
of the traffic to the new port.



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