Hello,
I am trying to use Ryu against FlowForwarding.org LINC OpenFlow 1.2 switch.
I have written this very basic application which does not work. What am I
doing wrong? Any help is appreciated.
import logging
import struct
import array
from ryu.controller import handler
from ryu.controller import dpset
from ryu.controller import ofp_event
from ryu.ofproto import ofproto_v1_2
from ryu.ofproto import ofproto_v1_2_parser
from ryu.ofproto import inet
from ryu.ofproto import ether
from ryu.base import app_manager
from ryu.lib.packet import packet
from ryu.ofproto.ofproto_v1_2_parser import *
from ryu.controller.handler import MAIN_DISPATCHER, set_ev_cls
LOG = logging.getLogger('ryu.app.l2')
class L2Switch(app_manager.RyuApp):
OFP_VERSIONS = [ofproto_v1_2.OFP_VERSION]
def __init__(self, *args, **kwargs):
super(L2Switch, self).__init__(*args, **kwargs)
@set_ev_cls(ofp_event.EventOFPPacketIn, MAIN_DISPATCHER)
def packet_in_handler(self, ev):
pkt = packet.Packet(array.array('B', ev.msg.data))
print pkt.protocols
for p in pkt.protocols:
print p
msg = ev.msg
dp = msg.datapath
for f in msg.match.fields:
if f.header == ofproto_v1_2.OXM_OF_IN_PORT:
in_port = f.value
class Datapath(object):
ofproto = ofproto_v1_2
ofproto_parser = ofproto_v1_2_parser
### I am not sure if the below is correct
actions = [ofp_parser.OFPActionOutput(ofp.OFPP_FLOOD)]
out = ofp_parser.OFPPacketOut(
datapath=dp, buffer_id=msg.buffer_id, in_port=msg.in_port,
actions=actions)
LOG.debug("Sending message out %s", out)
dp.send_msg(out)
Thanks
/Shivaram
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