def verify_no_packet_in(test, data, in_port, controller=None):
"""
Assert that the controller does not receive a packet_in message matching
data 'data' from port 'in_port'.
@param test Instance of base_tests.SimpleProtocol
@param pkt String to expect as the packet_in data
@param in_port OpenFlow port number to expect as the packet_in in_port
@param controller Controller instance, defaults to test.controller
"""
if controller == None:
controller = test.controller
# Negative test, need to wait a short amount of time before checking we
# didn't receive the message.
time.sleep(0.5)
# Check every packet_in queued in the controller
while True:
msg, _ = controller.poll(ofp.OFPT_PACKET_IN, timeout=0)
if msg == None:
# No more queued packet_in messages
break
elif packet_in_match(msg, data, in_port, None):
# Found a matching message
break
test.assertTrue(msg == None, "Did not expect a packet-in message on port %d" % in_port)
def verify_packet_in(test, data, in_port, reason, controller=None):
"""
Assert that the controller receives a packet_in message matching data 'data'
from port 'in_port' with reason 'reason'. Does not trigger the packet_in
itself, that's up to the test case.
@param test Instance of base_tests.SimpleProtocol
@param pkt String to expect as the packet_in data
@param in_port OpenFlow port number to expect as the packet_in in_port
@param reason One of OFPR_* to expect as the packet_in reason
@param controller Controller instance, defaults to test.controller
@returns The received packet-in message
"""
if controller == None:
controller = test.controller
end_time = time.time() + oftest.ofutils.default_timeout
while True:
msg, _ = controller.poll(ofp.OFPT_PACKET_IN, end_time - time.time())
if not msg:
# Timeout
break
elif packet_in_match(msg, data, in_port, reason):
# Found a matching message
break
test.assertTrue(msg is not None, 'Packet in message not received on port %d' % in_port)
return msg
