[ovs-dev] [PATCH] bridge: Don't update CFM on synthetic interfaces.

[Ben Pfaff]

On Tue, Sep 13, 2011 at 09:08:24AM -0700, Ethan Jackson wrote:
> > I'm pretty sure that it will always cause a segmentation fault, it's
> > just that it's pretty unusual to have to create a synthetic interface
> > (ovs-vsctl will never create a bridge that needs one.)
> 
> That's what you would think, but I tried it last night and couldn't
> get it to happen.  I have to look into it further.

The IDL optimizes out writes that don't actually change anything, so
you probably have to configure CFM to cause the fault.

OK, let me revise my statement to "I'm pretty sure that it will always
cause a segmentation fault if you configure CFM on a synthetic
interface, it's just that it's pretty unusual to have to create a
synthetic interface (ovs-vsctl will never create a bridge that needs
one)."

Come to think of it, why would anyone ever configure CFM on the local
port?  Maybe there *is* more at issue.