1 files changed, 126 insertions, 0 deletions
diff --git a/test/asf/test_policer.py b/test/asf/test_policer.py
new file mode 100644
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+++ b/test/asf/test_policer.py
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+#!/usr/bin/env python3
+# Copyright (c) 2021 Graphiant, Inc.
+
+import unittest
+
+from asfframework import VppAsfTestCase, VppTestRunner
+from vpp_policer import VppPolicer
+
+# Default for the tests is 10s of "Green" packets at 8Mbps, ie. 10M bytes.
+# The policer helper CLI "sends" 500 byte packets, so default is 20000.
+
+TEST_RATE = 8000  # kbps
+TEST_BURST = 10000  # ms
+
+CIR_OK = 8500  # CIR in kbps, above test rate
+CIR_LOW = 7000  # CIR in kbps, below test rate
+EIR_OK = 9000  # EIR in kbps, above test rate
+EIR_LOW = 7500  # EIR in kbps, below test rate
+
+NUM_PKTS = 20000
+
+CBURST = 100000  # Committed burst in bytes
+EBURST = 200000  # Excess burst in bytes
+
+
+class TestPolicer(VppAsfTestCase):
+    """Policer Test Case"""
+
+    def run_policer_test(
+        self, type, cir, cb, eir, eb, rate=8000, burst=10000, colour=0
+    ):
+        """
+        Configure a Policer and push traffic through it.
+        """
+        types = {
+            "1R2C": 0,
+            "1R3C": 1,
+            "2R3C": 3,
+        }
+
+        pol_type = types.get(type)
+        policer = VppPolicer(
+            self,
+            "pol1",
+            cir,
+            eir,
+            cb,
+            eb,
+            rate_type=0,
+            type=pol_type,
+            color_aware=colour,
+        )
+        policer.add_vpp_config()
+
+        error = self.vapi.cli(
+            f"test policing index {policer.policer_index} rate {rate} "
+            f"burst {burst} colour {colour}"
+        )
+
+        stats = policer.get_stats()
+        policer.remove_vpp_config()
+
+        return stats
+
+    def test_policer_1r2c(self):
+        """Single rate, 2 colour policer"""
+        stats = self.run_policer_test("1R2C", CIR_OK, CBURST, 0, 0)
+        self.assertEqual(stats["conform_packets"], NUM_PKTS)
+
+        stats = self.run_policer_test("1R2C", CIR_LOW, CBURST, 0, 0)
+        self.assertLess(stats["conform_packets"], NUM_PKTS)
+        self.assertEqual(stats["exceed_packets"], 0)
+        self.assertGreater(stats["violate_packets"], 0)
+
+        stats = self.run_policer_test("1R2C", CIR_LOW, CBURST, 0, 0, colour=2)
+        self.assertEqual(stats["violate_packets"], NUM_PKTS)
+
+    def test_policer_1r3c(self):
+        """Single rate, 3 colour policer"""
+        stats = self.run_policer_test("1R3C", CIR_OK, CBURST, 0, 0)
+        self.assertEqual(stats["conform_packets"], NUM_PKTS)
+
+        stats = self.run_policer_test("1R3C", CIR_LOW, CBURST, 0, EBURST)
+        self.assertLess(stats["conform_packets"], NUM_PKTS)
+        self.assertGreater(stats["exceed_packets"], 0)
+        self.assertGreater(stats["violate_packets"], 0)
+
+        stats = self.run_policer_test("1R3C", CIR_LOW, CBURST, 0, EBURST, colour=1)
+        self.assertEqual(stats["conform_packets"], 0)
+        self.assertGreater(stats["exceed_packets"], 0)
+        self.assertGreater(stats["violate_packets"], 0)
+
+        stats = self.run_policer_test("1R3C", CIR_LOW, CBURST, 0, EBURST, colour=2)
+        self.assertEqual(stats["violate_packets"], NUM_PKTS)
+
+    def test_policer_2r3c(self):
+        """Dual rate, 3 colour policer"""
+        stats = self.run_policer_test("2R3C", CIR_OK, CBURST, EIR_OK, EBURST)
+        self.assertEqual(stats["conform_packets"], NUM_PKTS)
+
+        stats = self.run_policer_test("2R3C", CIR_LOW, CBURST, EIR_OK, EBURST)
+        self.assertLess(stats["conform_packets"], NUM_PKTS)
+        self.assertGreater(stats["exceed_packets"], 0)
+        self.assertEqual(stats["violate_packets"], 0)
+
+        stats = self.run_policer_test("2R3C", CIR_LOW, CBURST, EIR_LOW, EBURST)
+        self.assertLess(stats["conform_packets"], NUM_PKTS)
+        self.assertGreater(stats["exceed_packets"], 0)
+        self.assertGreater(stats["violate_packets"], 0)
+
+        stats = self.run_policer_test("2R3C", CIR_LOW, CBURST, EIR_OK, EBURST, colour=1)
+        self.assertEqual(stats["exceed_packets"], NUM_PKTS)
+
+        stats = self.run_policer_test(
+            "2R3C", CIR_LOW, CBURST, EIR_LOW, EBURST, colour=1
+        )
+        self.assertEqual(stats["conform_packets"], 0)
+        self.assertGreater(stats["exceed_packets"], 0)
+        self.assertGreater(stats["violate_packets"], 0)
+
+        stats = self.run_policer_test("2R3C", CIR_LOW, CBURST, EIR_OK, EBURST, colour=2)
+        self.assertEqual(stats["violate_packets"], NUM_PKTS)
+
+
+if __name__ == "__main__":
+    unittest.main(testRunner=VppTestRunner)