Update controller.py
diff --git a/src/python/oftest/controller.py b/src/python/oftest/controller.py
index c59cfe8..df24c89 100644
--- a/src/python/oftest/controller.py
+++ b/src/python/oftest/controller.py
@@ -569,7 +569,7 @@
return
self.handlers[msg_type] = handler
- def poll(self, exp_msg=-1, timeout=-1):
+ def poll(self, exp_msg=None, timeout=-1):
"""
Wait for the next OF message received from the switch.
@@ -588,11 +588,11 @@
"""
exp_msg_str = "unspecified"
- if exp_msg!=-1:
+ if exp_msg is not None:
exp_msg_str = ofp.ofp_type_map.get(exp_msg, "unknown (%d)" %
exp_msg)
- if exp_msg!=-1:
+ if exp_msg is not None:
self.logger.debug("Poll for %s", exp_msg_str)
else:
self.logger.debug("Poll for any OF message")
@@ -600,7 +600,7 @@
# Take the packet from the queue
def grab():
if len(self.packets) > 0:
- if exp_msg==-1:
+ if exp_msg is None:
self.logger.debug("Looking for any packet")
(msg, pkt) = self.packets.pop(0)
return (msg, pkt)