Hi all,
I want to know for the application eg l2_learning. If we run this component,
l2_learning is single thread or multi-thread?
My simple test:
def _handle_PacketIn (event):
packet = event.parsed
msg = of.ofp_flow_mod()
msg.match = of.ofp_match.from_packet(packet, event.port);
msg.buffer_id = event.ofp.buffer_id
log.info("buffer_id %i", msg.buffer_id);
msg.idle_timeout = 10
msg.hard_timeout = 30
msg.actions.append(of.ofp_action_output(port = 0))
msg.data = event.ofp
event.connection.send(msg)
When I print out the buffer_id message, sometimes it is not sequence. I got the
result like that:
INFO:packet:(udp parse) warning UDP packet data shorter than UDP len: 96 < 962
INFO:misc.test_flow_miss:buffer_id 0
INFO:openflow.of_01:[00-00-00-00-00-01 2] connected
INFO:packet:(udp parse) warning UDP packet data shorter than UDP len: 96 < 962
INFO:misc.test_flow_miss:buffer_id 2
This makes me very confused. At first, I thought just one single thread for the
app. app processed the requests according to FIFO mode. Can anybody give some
help and explain some reason for my result?
Another question:
In pox wiki, when we want to install a flow entry: if the tcp port is 8080, why
in python code, we do not need to do htons translation. However, the switch
side receives the port is network endian.
