[ovs-dev] [PATCH 3/3] datapath: Renumber non-upstreamable interfaces.

Jesse Gross jesse at nicira.com
Tue Nov 8 00:00:55 UTC 2011

On Mon, Nov 7, 2011 at 11:01 AM, Ben Pfaff <blp at nicira.com> wrote:
> On Sun, Nov 06, 2011 at 12:34:25PM -0800, Jesse Gross wrote:
>> The interfaces related to tunneling aren't finalized enough to be
>> sent upstream but we also still want to retain them in the OVS
>> repository.  Since userspace should be compatible with both versions
>> of the kernel, this renumbers the tunnel interfaces to high numbers
>> so that we can continue to add new interfaces without conflict.
>> Signed-off-by: Jesse Gross <jesse at nicira.com>
> We have arrays sized on some of these values.  I have a series out
> that uses policy parsing for key attributes in userspace, so this is
> going to require changes in that series, and I was planning to do the
> same thing in the kernel.  However I don't see a better way to do it
> yet, so...

This definitely results in some unfortunate waste of space though I
don't see really see an alternative.  The thing that I was most
concerned about was kernel stack space, which at the moment, at least,
this doesn't affect.  What would you change in response to this?

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