| #!/usr/bin/env python3 |
| # Copyright (c) 2021 Graphiant, Inc. |
| |
| import unittest |
| |
| from framework import VppTestCase, VppTestRunner |
| from vpp_policer import VppPolicer, PolicerAction |
| |
| # 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(VppTestCase): |
| """ 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) |