[ovs-discuss] mf_value and mf_subvalue size restrictions
jesse at nicira.com
Thu Nov 6 23:03:34 UTC 2014
On Thu, Nov 6, 2014 at 2:51 PM, Ben Pfaff <blp at nicira.com> wrote:
> On Thu, Nov 06, 2014 at 02:49:55PM -0800, Ben Pfaff wrote:
>> On Thu, Nov 06, 2014 at 02:37:01PM -0800, Jesse Gross wrote:
>> > I'm curious how you ended up laying this out. The OpenFlow spec says
>> > that the extra space should be used as an vendor ID in the form of an
>> > OUI. How did you reconcile this?
>> You can probably get away with a lot if you make the most significant
>> byte of the extra 32 bits nonzero, because OpenFlow only specifies the
>> format of the other 24 bits if that byte is zero and leaves the rest of
>> the space reserved for future standardization.
>> But that's kind of a nasty thing to do.
>> Have you considered allowing database configuration to specify what kind
>> of attributes are expected and how to parse them? The configuration
>> could be P4-based, for example.
> By the way, did you realize that you've been frozen?
And even worse, they misspelled my name.
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