On Thu, Mar 05, 2015 at 04:58:40PM +0000, Deena Mukundan wrote:
> In one of the test scenarios, it was observed that OVS switch send
> buffer_id as 1247 in the packet_in message towards controller And
> Controller responded with Flow_mOd to add flows with buffer_id as
> 0xfffffff. And it was observed that packet was not forwarded To the
> destination. What does OVS interpret buffer_id as 0xfffffff ?
The OpenFlow spec is clear on the meaning here:
The buffer_id refers to a packet buffered at the switch and sent to
the controller by a packet-in message. If no buffered packet is
associated with the flow mod, it must be set to OFP_NO_BUFFER.
when you realize that OFP_NO_BUFFER has value 0xffffffff.
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