def get_packet_out(self, set_unbuffered=False):
"""Function to return flow_entry in terms of packet out
@param set_unbuffered set packet out to for unbuffered packet
@return ofp_packet_out
"""
po = pyof.ofp_packet_out()
if set_unbuffered:
po.buffer_id = UNBUFFERED_ID
else:
po.buffer_id = self.buffer_id
po.in_port = self.match.in_port
po.actions_len = 0
for a in self.actions:
po.actions_len += a.len
po.actions = self.actions[:]
return po
def __init__(self, server, ofconn,
sendinterval=10, linktimeout=30):
"""Initialize
@param server yapc core
"""
if (sendinterval > linktimeout):
output.warn("Probe interval of "+str(sendinterval)+\
"is smaller than timeout of "+str(linktimeout),
self.__class__.__name__)
##Interval to send LLDP per switch/port
self.interval = sendinterval
self.__minterval = sendinterval
##Time to wait before timing out link
self.link_maintain = link_maintain(server, linktimeout)
##Reference to core
self.server = server
##Reference to OpenFlow connections
self.conn = ofconn
##Current list of switch/port LLDP is sent
self.__sw_port = []
##Packet out template
self.__po = pyof.ofp_packet_out()
oao = pyof.ofp_action_output()
self.__po.in_port = pyof.OFPP_NONE
self.__po.actions_len = oao.len
self.__po.actions.append(oao)
mc.get_client()
server.register_event_handler(ofevents.pktin.name,
self)
server.register_event_handler(ofevents.port_status.name,
self)
server.register_event_handler(ofevents.features_reply.name,
self)
server.post_event(yapc.priv_callback(self, True),
self.interval)