On Thu, Sep 1, 2011 at 20:02, Jesse Gross <je...@nicira.com> wrote: > That's the cause of the problem. OVS is rejecting the packet out > because it is being sent from an out-of-range port. It's not entirely > clear to me whether this is allowed by the OpenFlow spec and should be > supported. In this case, I believe that OFPP_NONE is the correct port > to use, although OVS will not like that either. >
Other datapath implementations definitely allow the in_port on a packet_out to be set to OFPP_CONTROLLER. The spec is silent on valid in_port values, which I take to mean that anything is legal - this is especially important when you want to make sure the output: IN_PORT action works properly on other flows that might be in your table (e.g. if an output action is set to IN_PORT, I would expect this packet back at the controller - with the appropriate reason field set - and more importantly, I would expect to NOT get a packet back due to another output: OFPP_CONTROLLER action). -- Nick
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