| """ |
| Basic protocol and dataplane test cases |
| |
| It is recommended that these definitions be kept in their own |
| namespace as different groups of tests will likely define |
| similar identifiers. |
| |
| Current Assumptions: |
| |
| The function test_set_init is called with a complete configuration |
| dictionary prior to the invocation of any tests from this file. |
| |
| The switch is actively attempting to contact the controller at the address |
| indicated oin oft_config |
| |
| """ |
| |
| import time |
| import signal |
| import sys |
| import logging |
| |
| import unittest |
| import random |
| |
| import oftest.controller as controller |
| import oftest.cstruct as ofp |
| import oftest.message as message |
| import oftest.dataplane as dataplane |
| import oftest.action as action |
| |
| from testutils import * |
| |
| #@var basic_port_map Local copy of the configuration map from OF port |
| # numbers to OS interfaces |
| basic_port_map = None |
| #@var basic_logger Local logger object |
| basic_logger = None |
| #@var basic_config Local copy of global configuration data |
| basic_config = None |
| |
| test_prio = {} |
| |
| def test_set_init(config): |
| """ |
| Set up function for basic test classes |
| |
| @param config The configuration dictionary; see oft |
| """ |
| |
| global basic_port_map |
| global basic_logger |
| global basic_config |
| |
| basic_logger = logging.getLogger("basic") |
| basic_logger.info("Initializing test set") |
| basic_port_map = config["port_map"] |
| basic_config = config |
| |
| class SimpleProtocol(unittest.TestCase): |
| """ |
| Root class for setting up the controller |
| """ |
| |
| def sig_handler(self, v1, v2): |
| basic_logger.critical("Received interrupt signal; exiting") |
| print "Received interrupt signal; exiting" |
| self.clean_shutdown = False |
| self.tearDown() |
| raise KeyboardInterrupt |
| |
| def setUp(self): |
| self.logger = basic_logger |
| self.config = basic_config |
| signal.signal(signal.SIGINT, self.sig_handler) |
| basic_logger.info("** START TEST CASE " + str(self)) |
| self.controller = controller.Controller( |
| host=basic_config["controller_host"], |
| port=basic_config["controller_port"]) |
| # clean_shutdown should be set to False to force quit app |
| self.clean_shutdown = True |
| self.controller.start() |
| #@todo Add an option to wait for a pkt transaction to ensure version |
| # compatibilty? |
| self.controller.connect(timeout=20) |
| if not self.controller.active: |
| raise Exception("Controller startup failed") |
| if self.controller.switch_addr is None: |
| raise Exception("Controller startup failed (no switch addr)") |
| basic_logger.info("Connected " + str(self.controller.switch_addr)) |
| |
| def inheritSetup(self, parent): |
| """ |
| Inherit the setup of a parent |
| |
| This allows running at test from within another test. Do the |
| following: |
| |
| sub_test = SomeTestClass() # Create an instance of the test class |
| sub_test.inheritSetup(self) # Inherit setup of parent |
| sub_test.runTest() # Run the test |
| |
| Normally, only the parent's setUp and tearDown are called and |
| the state after the sub_test is run must be taken into account |
| by subsequent operations. |
| """ |
| self.logger = parent.logger |
| self.config = parent.config |
| basic_logger.info("** Setup " + str(self) + " inheriting from " |
| + str(parent)) |
| self.controller = parent.controller |
| |
| def tearDown(self): |
| basic_logger.info("** END TEST CASE " + str(self)) |
| self.controller.shutdown() |
| #@todo Review if join should be done on clean_shutdown |
| if self.clean_shutdown: |
| self.controller.join() |
| |
| def runTest(self): |
| # Just a simple sanity check as illustration |
| basic_logger.info("Running simple proto test") |
| self.assertTrue(self.controller.switch_socket is not None, |
| str(self) + 'No connection to switch') |
| |
| def assertTrue(self, cond, msg): |
| if not cond: |
| basic_logger.error("** FAILED ASSERTION: " + msg) |
| unittest.TestCase.assertTrue(self, cond, msg) |
| |
| test_prio["SimpleProtocol"] = 1 |
| |
| class SimpleDataPlane(SimpleProtocol): |
| """ |
| Root class that sets up the controller and dataplane |
| """ |
| def setUp(self): |
| SimpleProtocol.setUp(self) |
| self.dataplane = dataplane.DataPlane(self.config) |
| for of_port, ifname in basic_port_map.items(): |
| self.dataplane.port_add(ifname, of_port) |
| |
| def inheritSetup(self, parent): |
| """ |
| Inherit the setup of a parent |
| |
| See SimpleProtocol.inheritSetup |
| """ |
| SimpleProtocol.inheritSetup(self, parent) |
| self.dataplane = parent.dataplane |
| |
| def tearDown(self): |
| basic_logger.info("Teardown for simple dataplane test") |
| SimpleProtocol.tearDown(self) |
| if hasattr(self, 'dataplane'): |
| self.dataplane.kill(join_threads=self.clean_shutdown) |
| basic_logger.info("Teardown done") |
| |
| def runTest(self): |
| self.assertTrue(self.controller.switch_socket is not None, |
| str(self) + 'No connection to switch') |
| # self.dataplane.show() |
| # Would like an assert that checks the data plane |
| |
| class DataPlaneOnly(unittest.TestCase): |
| """ |
| Root class that sets up only the dataplane |
| """ |
| |
| def sig_handler(self, v1, v2): |
| basic_logger.critical("Received interrupt signal; exiting") |
| print "Received interrupt signal; exiting" |
| self.clean_shutdown = False |
| self.tearDown() |
| raise KeyboardInterrupt |
| |
| def setUp(self): |
| self.clean_shutdown = False |
| self.logger = basic_logger |
| self.config = basic_config |
| signal.signal(signal.SIGINT, self.sig_handler) |
| basic_logger.info("** START DataPlaneOnly CASE " + str(self)) |
| self.dataplane = dataplane.DataPlane(self.config) |
| for of_port, ifname in basic_port_map.items(): |
| self.dataplane.port_add(ifname, of_port) |
| |
| def tearDown(self): |
| basic_logger.info("Teardown for simple dataplane test") |
| self.dataplane.kill(join_threads=self.clean_shutdown) |
| basic_logger.info("Teardown done") |
| |
| def runTest(self): |
| basic_logger.info("DataPlaneOnly") |
| # self.dataplane.show() |
| # Would like an assert that checks the data plane |
| |
| class Echo(SimpleProtocol): |
| """ |
| Test echo response with no data |
| """ |
| def runTest(self): |
| request = message.echo_request() |
| response, pkt = self.controller.transact(request) |
| self.assertEqual(response.header.type, ofp.OFPT_ECHO_REPLY, |
| 'response is not echo_reply') |
| self.assertEqual(request.header.xid, response.header.xid, |
| 'response xid != request xid') |
| self.assertEqual(len(response.data), 0, 'response data non-empty') |
| |
| class EchoWithData(SimpleProtocol): |
| """ |
| Test echo response with short string data |
| """ |
| def runTest(self): |
| request = message.echo_request() |
| request.data = 'OpenFlow Will Rule The World' |
| response, pkt = self.controller.transact(request) |
| self.assertEqual(response.header.type, ofp.OFPT_ECHO_REPLY, |
| 'response is not echo_reply') |
| self.assertEqual(request.header.xid, response.header.xid, |
| 'response xid != request xid') |
| self.assertEqual(request.data, response.data, |
| 'response data does not match request') |
| |
| class PacketIn(SimpleDataPlane): |
| """ |
| Test packet in function |
| |
| Send a packet to each dataplane port and verify that a packet |
| in message is received from the controller for each |
| """ |
| def runTest(self): |
| # Construct packet to send to dataplane |
| # Send packet to dataplane, once to each port |
| # Poll controller with expect message type packet in |
| |
| rc = delete_all_flows(self.controller, basic_logger) |
| self.assertEqual(rc, 0, "Failed to delete all flows") |
| self.assertEqual(do_barrier(self.controller), 0, "Barrier failed") |
| |
| for of_port in basic_port_map.keys(): |
| for pkt, pt in [ |
| (simple_tcp_packet(), "simple TCP packet"), |
| (simple_eth_packet(), "simple Ethernet packet"), |
| (simple_eth_packet(pktlen=40), "tiny Ethernet packet")]: |
| |
| basic_logger.info("PKT IN test with %s, port %s" % (pt, of_port)) |
| self.dataplane.send(of_port, str(pkt)) |
| #@todo Check for unexpected messages? |
| count = 0 |
| while True: |
| (response, raw) = self.controller.poll(ofp.OFPT_PACKET_IN, 2) |
| if not response: # Timeout |
| break |
| if dataplane.match_exp_pkt(pkt, response.data): # Got match |
| break |
| if not basic_config["relax"]: # Only one attempt to match |
| break |
| count += 1 |
| if count > 10: # Too many tries |
| break |
| |
| self.assertTrue(response is not None, |
| 'Packet in message not received on port ' + |
| str(of_port)) |
| if not dataplane.match_exp_pkt(pkt, response.data): |
| basic_logger.debug("Sent %s" % format_packet(pkt)) |
| basic_logger.debug("Resp %s" % format_packet(response.data)) |
| self.assertTrue(False, |
| 'Response packet does not match send packet' + |
| ' for port ' + str(of_port)) |
| |
| |
| class PacketInBroadcastCheck(SimpleDataPlane): |
| """ |
| Check if bcast pkts leak when no flows are present |
| |
| Clear the flow table |
| Send in a broadcast pkt |
| Look for the packet on other dataplane ports. |
| """ |
| def runTest(self): |
| # Need at least two ports |
| self.assertTrue(len(basic_port_map) > 1, "Too few ports for test") |
| |
| rc = delete_all_flows(self.controller, basic_logger) |
| self.assertEqual(rc, 0, "Failed to delete all flows") |
| self.assertEqual(do_barrier(self.controller), 0, "Barrier failed") |
| |
| of_ports = basic_port_map.keys() |
| d_port = of_ports[0] |
| pkt = simple_eth_packet(dl_dst='ff:ff:ff:ff:ff:ff') |
| |
| basic_logger.info("BCast Leak Test, send to port %s" % d_port) |
| self.dataplane.send(d_port, str(pkt)) |
| |
| (of_port, pkt_in, pkt_time) = self.dataplane.poll(exp_pkt=pkt) |
| self.assertTrue(pkt_in is None, |
| 'BCast packet received on port ' + str(of_port)) |
| |
| test_prio["PacketInBroadcastCheck"] = -1 |
| |
| class PacketOut(SimpleDataPlane): |
| """ |
| Test packet out function |
| |
| Send packet out message to controller for each dataplane port and |
| verify the packet appears on the appropriate dataplane port |
| """ |
| def runTest(self): |
| # Construct packet to send to dataplane |
| # Send packet to dataplane |
| # Poll controller with expect message type packet in |
| |
| rc = delete_all_flows(self.controller, basic_logger) |
| self.assertEqual(rc, 0, "Failed to delete all flows") |
| |
| # These will get put into function |
| of_ports = basic_port_map.keys() |
| of_ports.sort() |
| for dp_port in of_ports: |
| for outpkt, opt in [ |
| (simple_tcp_packet(), "simple TCP packet"), |
| (simple_eth_packet(), "simple Ethernet packet"), |
| (simple_eth_packet(pktlen=40), "tiny Ethernet packet")]: |
| |
| basic_logger.info("PKT OUT test with %s, port %s" % (opt, dp_port)) |
| msg = message.packet_out() |
| msg.data = str(outpkt) |
| act = action.action_output() |
| act.port = dp_port |
| self.assertTrue(msg.actions.add(act), 'Could not add action to msg') |
| |
| basic_logger.info("PacketOut to: " + str(dp_port)) |
| rv = self.controller.message_send(msg) |
| self.assertTrue(rv == 0, "Error sending out message") |
| |
| exp_pkt_arg = None |
| exp_port = None |
| if basic_config["relax"]: |
| exp_pkt_arg = outpkt |
| exp_port = dp_port |
| (of_port, pkt, pkt_time) = self.dataplane.poll(port_number=exp_port, |
| exp_pkt=exp_pkt_arg) |
| |
| self.assertTrue(pkt is not None, 'Packet not received') |
| basic_logger.info("PacketOut: got pkt from " + str(of_port)) |
| if of_port is not None: |
| self.assertEqual(of_port, dp_port, "Unexpected receive port") |
| if not dataplane.match_exp_pkt(outpkt, pkt): |
| basic_logger.debug("Sent %s" % format_packet(outpkt)) |
| basic_logger.debug("Resp %s" % format_packet( |
| str(pkt)[:len(str(outpkt))])) |
| self.assertEqual(str(outpkt), str(pkt)[:len(str(outpkt))], |
| 'Response packet does not match send packet') |
| |
| class PacketOutMC(SimpleDataPlane): |
| """ |
| Test packet out to multiple output ports |
| |
| Send packet out message to controller for 1 to N dataplane ports and |
| verify the packet appears on the appropriate ports |
| """ |
| def runTest(self): |
| # Construct packet to send to dataplane |
| # Send packet to dataplane |
| # Poll controller with expect message type packet in |
| |
| rc = delete_all_flows(self.controller, basic_logger) |
| self.assertEqual(rc, 0, "Failed to delete all flows") |
| |
| # These will get put into function |
| of_ports = basic_port_map.keys() |
| random.shuffle(of_ports) |
| for num_ports in range(1,len(of_ports)+1): |
| for outpkt, opt in [ |
| (simple_tcp_packet(), "simple TCP packet"), |
| (simple_eth_packet(), "simple Ethernet packet"), |
| (simple_eth_packet(pktlen=40), "tiny Ethernet packet")]: |
| |
| dp_ports = of_ports[0:num_ports] |
| basic_logger.info("PKT OUT test with " + opt + |
| ", ports " + str(dp_ports)) |
| msg = message.packet_out() |
| msg.data = str(outpkt) |
| act = action.action_output() |
| for i in range(0,num_ports): |
| act.port = dp_ports[i] |
| self.assertTrue(msg.actions.add(act), |
| 'Could not add action to msg') |
| |
| basic_logger.info("PacketOut to: " + str(dp_ports)) |
| rv = self.controller.message_send(msg) |
| self.assertTrue(rv == 0, "Error sending out message") |
| |
| receive_pkt_check(self.dataplane, outpkt, dp_ports, |
| set(of_ports).difference(dp_ports), |
| self, basic_logger, basic_config) |
| |
| class FlowStatsGet(SimpleProtocol): |
| """ |
| Get stats |
| |
| Simply verify stats get transaction |
| """ |
| def runTest(self): |
| basic_logger.info("Running StatsGet") |
| basic_logger.info("Inserting trial flow") |
| request = flow_mod_gen(basic_port_map, True) |
| rv = self.controller.message_send(request) |
| self.assertTrue(rv != -1, "Failed to insert test flow") |
| |
| basic_logger.info("Sending flow request") |
| request = message.flow_stats_request() |
| request.out_port = ofp.OFPP_NONE |
| request.table_id = 0xff |
| request.match.wildcards = 0 # ofp.OFPFW_ALL |
| response, pkt = self.controller.transact(request) |
| self.assertTrue(response is not None, "Did not get response") |
| basic_logger.debug(response.show()) |
| |
| test_prio["FlowStatsGet"] = -1 |
| |
| class TableStatsGet(SimpleProtocol): |
| """ |
| Get table stats |
| |
| Simply verify table stats get transaction |
| """ |
| def runTest(self): |
| basic_logger.info("Running TableStatsGet") |
| basic_logger.info("Inserting trial flow") |
| request = flow_mod_gen(basic_port_map, True) |
| rv = self.controller.message_send(request) |
| self.assertTrue(rv != -1, "Failed to insert test flow") |
| |
| basic_logger.info("Sending table stats request") |
| request = message.table_stats_request() |
| response, pkt = self.controller.transact(request) |
| self.assertTrue(response is not None, "Did not get response") |
| basic_logger.debug(response.show()) |
| |
| class DescStatsGet(SimpleProtocol): |
| """ |
| Get stats |
| |
| Simply verify stats get transaction |
| """ |
| def runTest(self): |
| basic_logger.info("Running DescStatsGet") |
| |
| basic_logger.info("Sending stats request") |
| request = message.desc_stats_request() |
| response, pkt = self.controller.transact(request) |
| self.assertTrue(response is not None, "Did not get response") |
| basic_logger.debug(response.show()) |
| |
| class FlowMod(SimpleProtocol): |
| """ |
| Insert a flow |
| |
| Simple verification of a flow mod transaction |
| """ |
| |
| def runTest(self): |
| basic_logger.info("Running " + str(self)) |
| request = flow_mod_gen(basic_port_map, True) |
| rv = self.controller.message_send(request) |
| self.assertTrue(rv != -1, "Error installing flow mod") |
| |
| class PortConfigMod(SimpleProtocol): |
| """ |
| Modify a bit in port config and verify changed |
| |
| Get the switch configuration, modify the port configuration |
| and write it back; get the config again and verify changed. |
| Then set it back to the way it was. |
| """ |
| |
| def runTest(self): |
| basic_logger.info("Running " + str(self)) |
| for of_port, ifname in basic_port_map.items(): # Grab first port |
| break |
| |
| (hw_addr, config, advert) = \ |
| port_config_get(self.controller, of_port, basic_logger) |
| self.assertTrue(config is not None, "Did not get port config") |
| |
| basic_logger.debug("No flood bit port " + str(of_port) + " is now " + |
| str(config & ofp.OFPPC_NO_FLOOD)) |
| |
| rv = port_config_set(self.controller, of_port, |
| config ^ ofp.OFPPC_NO_FLOOD, ofp.OFPPC_NO_FLOOD, |
| basic_logger) |
| self.assertTrue(rv != -1, "Error sending port mod") |
| |
| # Verify change took place with same feature request |
| (hw_addr, config2, advert) = \ |
| port_config_get(self.controller, of_port, basic_logger) |
| basic_logger.debug("No flood bit port " + str(of_port) + " is now " + |
| str(config2 & ofp.OFPPC_NO_FLOOD)) |
| self.assertTrue(config2 is not None, "Did not get port config2") |
| self.assertTrue(config2 & ofp.OFPPC_NO_FLOOD != |
| config & ofp.OFPPC_NO_FLOOD, |
| "Bit change did not take") |
| # Set it back |
| rv = port_config_set(self.controller, of_port, config, |
| ofp.OFPPC_NO_FLOOD, basic_logger) |
| self.assertTrue(rv != -1, "Error sending port mod") |
| |
| if __name__ == "__main__": |
| print "Please run through oft script: ./oft --test_spec=basic" |