# Set up the OpenFlow stats request packet.
request = ofp_stats_request()
request.header.xid = c_htonl(long(25))
request.type = OFPST_FLOW
request.flags = 0
body = ofp_flow_stats_request()
body.port_no = OFPP_NONE
body.table_id = 0xff # All flow tables
body.match.wildcards = OFPFW_ALL
request.header.length = len(request.pack()) + len(body.pack())
# Send the request.
logger.info("Requesting flows from switch id: %d." % dpid)
self.send_openflow_command(dpid, request.pack() + body.pack())
On 12/01/2010 10:55 AM, Kyriakos Zarifis wrote:
can you paste the code where you build and send your stats request?
On Tue, Nov 30, 2010 at 5:48 PM, Derek Cormier
<derek.corm...@lab.ntt.co.jp <mailto:derek.corm...@lab.ntt.co.jp>> wrote:
Interesting. I used Open vSwitch's ovs-ofctl dump-flows and I can
see the flow. I am waiting three seconds after installing the flow
before requesting the flow stats, so that should be enough time...
-Derek
On 12/01/2010 10:40 AM, Kyriakos Zarifis wrote:
Can you look at the flowtable using dpctl to verify that it is
empty?
( could it be the timing? are you sending the request right after
you send the flowmod?)
On Tue, Nov 30, 2010 at 5:33 PM, Derek Cormier
<derek.corm...@lab.ntt.co.jp
<mailto:derek.corm...@lab.ntt.co.jp>> wrote:
Oh, and I forgot to mention that I am sending a flow stats
request.
On 12/01/2010 10:30 AM, Derek Cormier wrote:
Hello,
I am trying to add a flow to a switch in my Nox
component. After the switch joins the datapath, I create
a simple flow to test that it works:
flow = dict()
flow[NW_PROTO] = UDP_PROTOCOL
self.install_datapath_flow(dpid, flow,
OFP_FLOW_PERMANENT, OFP_FLOW_PERMANENT, [[OFPAT_OUTPUT,
[0, OFPP_CONTROLLER]]])
I then receive a flow stats reply event in my handler,
but event.flows = [] and event.flowcount = 0. Do you know
what I am doing wrong?
Thank you,
Derek
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