[ovs-discuss] packet message stats

Ben Pfaff blp at nicira.com
Tue Mar 11 16:05:57 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.

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