---
ryu/topology/switches.py | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/ryu/topology/switches.py b/ryu/topology/switches.py
index 644a1fe..31584b6 100644
--- a/ryu/topology/switches.py
+++ b/ryu/topology/switches.py
@@ -249,6 +249,7 @@ class PortData(object):
self.lldp_data = lldp_data
self.timestamp = None
self.sent = 0
+ self.delay = 0
def lldp_sent(self):
self.timestamp = time.time()
@@ -766,6 +767,7 @@ class Switches(app_manager.RyuApp):
@set_ev_cls(ofp_event.EventOFPPacketIn, MAIN_DISPATCHER)
def lldp_packet_in_handler(self, ev):
+ recv_timestamp = time.time()
if not self.link_discovery:
return
@@ -786,6 +788,13 @@ class Switches(app_manager.RyuApp):
LOG.error('cannot accept LLDP. unsupported version. %x',
msg.datapath.ofproto.OFP_VERSION)
+ # get the lldp delay
+ for port in self.ports.keys():
+ if src_dpid == port.dpid and src_port_no == port.port_no:
+ send_timestamp = self.ports[port].timestamp
+ if send_timestamp:
+ self.ports[port].delay = recv_timestamp - send_timestamp
+
src = self._get_port(src_dpid, src_port_no)
if not src or src.dpid == dst_dpid:
return
--
1.7.9.5
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