[ovs-discuss] packet message stats

Gray, Mark D mark.d.gray at intel.com
Tue Mar 11 17:58:40 UTC 2014


> 
> On Tue, Mar 11, 2014 at 02:51:59PM +0000, Gray, Mark D wrote:
> > After receiving a miss upcall for a flow, the flow entry is put into
> > the datapath flow table. Along with that flow entry, a number packet
> > messages may be sent to the datapath until the entry is put into the
> > table.
> >
> > DPIF allows clients to query flow entries using the dpif_flow_get()
> > function. This returns, among other things, dpif_flow_stats. Do these
> > stats only refer to the table entry or should they also include the
> > contribution from the packet message?  I realise that the extra
> > contribution due to the packet message is small but I would like to
> > confirm expected behaviour.
> 
> The initial message doesn't get directly processed by the flow (it's
> sent via a separate "execute" request) so it doesn't count in the
> datapath flow stats.

Great, Thanks for that Ben
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