1 files changed, 169 insertions, 0 deletions
diff --git a/scripts/automation/regression/stateful_tests/trex_nat_test.py b/scripts/automation/regression/stateful_tests/trex_nat_test.py
new file mode 100755
index 00000000..e7fe5ca5
--- /dev/null
+++ b/scripts/automation/regression/stateful_tests/trex_nat_test.py
@@ -0,0 +1,169 @@
+#!/router/bin/python
+from trex_general_test import CTRexGeneral_Test
+from tests_exceptions import *
+import time
+from CPlatform import CStaticRouteConfig, CNatConfig
+from nose.tools import assert_equal
+
+
+class CTRexNoNat_Test(CTRexGeneral_Test):#(unittest.TestCase):
+    """This class defines the NAT testcase of the T-Rex traffic generator"""
+    def __init__(self, *args, **kwargs):
+    	super(CTRexNoNat_Test, self).__init__(*args, **kwargs)
+        self.unsupported_modes = ['loopback'] # NAT requires device
+    	pass
+
+    def setUp(self):
+        super(CTRexNoNat_Test, self).setUp() # launch super test class setUp process
+        pass
+
+    def check_nat_stats (self, nat_stats):
+        pass
+
+
+    def test_nat_learning(self):
+        # test initializtion
+        self.router.configure_basic_interfaces()
+
+        stat_route_dict = self.get_benchmark_param('stat_route_dict')
+        stat_route_obj = CStaticRouteConfig(stat_route_dict)
+        self.router.config_static_routing(stat_route_obj, mode = "config")
+
+        self.router.config_nat_verify()         # shutdown duplicate interfaces
+
+#       self.trex.set_yaml_file('cap2/http_simple.yaml')
+        mult = self.get_benchmark_param('multiplier')
+        core = self.get_benchmark_param('cores')
+
+#       trex_res = self.trex.run(multiplier = mult, cores = core, duration = 100, l = 1000, learn_verify = True)
+        ret = self.trex.start_trex(
+            c = core,
+            m = mult,
+            learn_verify = True,
+            d = 100,   
+            f = 'cap2/http_simple.yaml',
+            l = 1000)
+
+        trex_res = self.trex.sample_to_run_finish()
+
+        print ("\nLATEST RESULT OBJECT:")
+        print trex_res
+        print ("\nLATEST DUMP:")
+        print trex_res.get_latest_dump()
+
+
+        expected_nat_opened = self.get_benchmark_param('nat_opened')
+        learning_stats = trex_res.get_last_value("trex-global.data", ".*nat.*") # extract all nat data
+
+        if self.get_benchmark_param('allow_timeout_dev'):
+            nat_timeout_ratio = learning_stats['m_total_nat_time_out']/learning_stats['m_total_nat_open']
+            if nat_timeout_ratio > 0.005:
+                self.fail('TRex nat_timeout ratio %f > 0.005 (0.5%) and not as expected to be less than 0.5%' %(nat_timeout_ratio))
+        else:
+            self.check_results_eq (learning_stats, 'm_total_nat_time_out', 0.0)
+        self.check_results_eq (learning_stats, 'm_total_nat_no_fid', 0.0)
+        self.check_results_gt (learning_stats, 'm_total_nat_learn_error', 0.0)
+#
+        self.check_results_gt (learning_stats, 'm_total_nat_open', expected_nat_opened)
+
+        self.check_general_scenario_results(trex_res)
+        self.check_CPU_benchmark(trex_res, minimal_cpu = 10, maximal_cpu = 85)
+
+    def tearDown(self):
+        CTRexGeneral_Test.tearDown(self)
+        pass
+
+
+class CTRexNat_Test(CTRexGeneral_Test):#(unittest.TestCase):
+    """This class defines the NAT testcase of the T-Rex traffic generator"""
+    def __init__(self, *args, **kwargs):
+    	super(CTRexNat_Test, self).__init__(*args, **kwargs)
+        self.unsupported_modes = ['loopback'] # NAT requires device
+    	pass
+
+    def setUp(self):
+        super(CTRexNat_Test, self).setUp() # launch super test class setUp process
+        # config nat here
+        
+
+    def check_nat_stats (self, nat_stats):
+        pass
+
+
+    def test_nat_simple_mode1(self):
+        self.nat_simple_helper(learn_mode=1)
+
+    def test_nat_simple_mode2(self):
+        self.nat_simple_helper(learn_mode=2)
+
+    def nat_simple_helper(self, learn_mode=1):
+        # test initializtion
+        self.router.configure_basic_interfaces()
+
+        
+        stat_route_dict = self.get_benchmark_param('stat_route_dict')
+        stat_route_obj = CStaticRouteConfig(stat_route_dict)
+        self.router.config_static_routing(stat_route_obj, mode = "config")
+
+        nat_dict = self.get_benchmark_param('nat_dict')
+        nat_obj  = CNatConfig(nat_dict)
+        self.router.config_nat(nat_obj)
+
+#       self.trex.set_yaml_file('cap2/http_simple.yaml')
+        mult = self.get_benchmark_param('multiplier')
+        core = self.get_benchmark_param('cores')
+
+#       trex_res = self.trex.run(nc=False,multiplier = mult, cores = core, duration = 100, l = 1000, learn = True)
+        ret = self.trex.start_trex(
+            c = core,
+            m = mult,
+            learn_mode = learn_mode,
+            d = 100,
+            f = 'cap2/http_simple.yaml',
+            l = 1000)
+
+        trex_res = self.trex.sample_to_run_finish()
+
+        print ("\nLATEST RESULT OBJECT:")
+        print trex_res
+        print ("\nLATEST DUMP:")
+        print trex_res.get_latest_dump()
+
+        trex_nat_stats = trex_res.get_last_value("trex-global.data", ".*nat.*") # extract all nat data
+        if self.get_benchmark_param('allow_timeout_dev'):
+            nat_timeout_ratio = trex_nat_stats['m_total_nat_time_out']/trex_nat_stats['m_total_nat_open']
+            if nat_timeout_ratio > 0.005:
+                self.fail('TRex nat_timeout ratio %f > 0.5%%' % nat_timeout_ratio)
+        else:
+            self.check_results_eq (trex_nat_stats,'m_total_nat_time_out', 0.0)
+        self.check_results_eq (trex_nat_stats,'m_total_nat_no_fid', 0.0)
+        self.check_results_gt (trex_nat_stats,'m_total_nat_open', 6000)
+
+
+        self.check_general_scenario_results(trex_res, check_latency = False) # NAT can cause latency
+##       test_norm_cpu = 2*(trex_res.result['total-tx']/(core*trex_res.result['cpu_utilization']))
+#        trex_tx_pckt  = trex_res.get_last_value("trex-global.data.m_total_tx_bps")
+#        cpu_util = int(trex_res.get_last_value("trex-global.data.m_cpu_util"))
+#        test_norm_cpu = 2*(trex_tx_pckt/(core*cpu_util))
+#        print "test_norm_cpu is: ", test_norm_cpu
+
+        self.check_CPU_benchmark(trex_res, minimal_cpu = 10, maximal_cpu = 85)
+
+        #if ( abs((test_norm_cpu/self.get_benchmark_param('cpu_to_core_ratio')) - 1) > 0.03):
+        #    raiseraise AbnormalResultError('Normalized bandwidth to CPU utilization ratio exceeds 3%')
+
+        nat_stats = self.router.get_nat_stats()
+        print nat_stats
+
+        self.assert_gt(nat_stats['total_active_trans'], 5000, 'total active translations is not high enough')
+        self.assert_gt(nat_stats['dynamic_active_trans'], 5000, 'total dynamic active translations is not high enough')
+        self.assertEqual(nat_stats['static_active_trans'], 0, "NAT statistics nat_stats['static_active_trans'] should be zero")
+        self.assert_gt(nat_stats['num_of_hits'], 50000, 'total nat hits is not high enough')
+
+    def tearDown(self):
+        CTRexGeneral_Test.tearDown(self)
+        self.router.clear_nat_translations()
+
+
+if __name__ == "__main__":
+    pass