| Brian Russell | 130680b | 2021-02-04 17:53:23 +0000 | [diff] [blame] | 1 | #!/usr/bin/env python3 |
| 2 | # Copyright (c) 2021 Graphiant, Inc. |
| 3 | |
| 4 | import unittest |
| 5 | |
| 6 | from framework import VppTestCase, VppTestRunner |
| 7 | from vpp_policer import VppPolicer, PolicerAction |
| 8 | |
| 9 | # Default for the tests is 10s of "Green" packets at 8Mbps, ie. 10M bytes. |
| 10 | # The policer helper CLI "sends" 500 byte packets, so default is 20000. |
| 11 | |
| 12 | TEST_RATE = 8000 # kbps |
| 13 | TEST_BURST = 10000 # ms |
| 14 | |
| 15 | CIR_OK = 8500 # CIR in kbps, above test rate |
| 16 | CIR_LOW = 7000 # CIR in kbps, below test rate |
| 17 | EIR_OK = 9000 # EIR in kbps, above test rate |
| 18 | EIR_LOW = 7500 # EIR in kbps, below test rate |
| 19 | |
| 20 | NUM_PKTS = 20000 |
| 21 | |
| 22 | CBURST = 100000 # Committed burst in bytes |
| 23 | EBURST = 200000 # Excess burst in bytes |
| 24 | |
| 25 | |
| 26 | class TestPolicer(VppTestCase): |
| 27 | """ Policer Test Case """ |
| 28 | |
| Brian Russell | 130680b | 2021-02-04 17:53:23 +0000 | [diff] [blame] | 29 | def run_policer_test(self, type, cir, cb, eir, eb, rate=8000, burst=10000, |
| 30 | colour=0): |
| 31 | """ |
| 32 | Configure a Policer and push traffic through it. |
| 33 | """ |
| 34 | types = { |
| 35 | '1R2C': 0, |
| 36 | '1R3C': 1, |
| 37 | '2R3C': 3, |
| 38 | } |
| 39 | |
| 40 | pol_type = types.get(type) |
| 41 | policer = VppPolicer(self, "pol1", cir, eir, cb, eb, rate_type=0, |
| 42 | type=pol_type, color_aware=colour) |
| 43 | policer.add_vpp_config() |
| 44 | |
| 45 | error = self.vapi.cli( |
| 46 | f"test policing index {policer.policer_index} rate {rate} " |
| 47 | f"burst {burst} colour {colour}") |
| 48 | |
| 49 | stats = policer.get_stats() |
| 50 | policer.remove_vpp_config() |
| 51 | |
| 52 | return stats |
| 53 | |
| 54 | def test_policer_1r2c(self): |
| 55 | """ Single rate, 2 colour policer """ |
| 56 | stats = self.run_policer_test("1R2C", CIR_OK, CBURST, 0, 0) |
| 57 | self.assertEqual(stats['conform_packets'], NUM_PKTS) |
| 58 | |
| 59 | stats = self.run_policer_test("1R2C", CIR_LOW, CBURST, 0, 0) |
| 60 | self.assertLess(stats['conform_packets'], NUM_PKTS) |
| 61 | self.assertEqual(stats['exceed_packets'], 0) |
| 62 | self.assertGreater(stats['violate_packets'], 0) |
| 63 | |
| 64 | stats = self.run_policer_test("1R2C", CIR_LOW, CBURST, 0, 0, colour=2) |
| 65 | self.assertEqual(stats['violate_packets'], NUM_PKTS) |
| 66 | |
| 67 | def test_policer_1r3c(self): |
| 68 | """ Single rate, 3 colour policer """ |
| 69 | stats = self.run_policer_test("1R3C", CIR_OK, CBURST, 0, 0) |
| 70 | self.assertEqual(stats['conform_packets'], NUM_PKTS) |
| 71 | |
| 72 | stats = self.run_policer_test("1R3C", CIR_LOW, CBURST, 0, EBURST) |
| 73 | self.assertLess(stats['conform_packets'], NUM_PKTS) |
| 74 | self.assertGreater(stats['exceed_packets'], 0) |
| 75 | self.assertGreater(stats['violate_packets'], 0) |
| 76 | |
| 77 | stats = self.run_policer_test("1R3C", CIR_LOW, CBURST, 0, EBURST, |
| 78 | colour=1) |
| 79 | self.assertEqual(stats['conform_packets'], 0) |
| 80 | self.assertGreater(stats['exceed_packets'], 0) |
| 81 | self.assertGreater(stats['violate_packets'], 0) |
| 82 | |
| 83 | stats = self.run_policer_test("1R3C", CIR_LOW, CBURST, 0, EBURST, |
| 84 | colour=2) |
| 85 | self.assertEqual(stats['violate_packets'], NUM_PKTS) |
| 86 | |
| 87 | def test_policer_2r3c(self): |
| 88 | """ Dual rate, 3 colour policer """ |
| 89 | stats = self.run_policer_test("2R3C", CIR_OK, CBURST, EIR_OK, EBURST) |
| 90 | self.assertEqual(stats['conform_packets'], NUM_PKTS) |
| 91 | |
| 92 | stats = self.run_policer_test("2R3C", CIR_LOW, CBURST, EIR_OK, EBURST) |
| 93 | self.assertLess(stats['conform_packets'], NUM_PKTS) |
| 94 | self.assertGreater(stats['exceed_packets'], 0) |
| 95 | self.assertEqual(stats['violate_packets'], 0) |
| 96 | |
| 97 | stats = self.run_policer_test("2R3C", CIR_LOW, CBURST, EIR_LOW, EBURST) |
| 98 | self.assertLess(stats['conform_packets'], NUM_PKTS) |
| 99 | self.assertGreater(stats['exceed_packets'], 0) |
| 100 | self.assertGreater(stats['violate_packets'], 0) |
| 101 | |
| 102 | stats = self.run_policer_test("2R3C", CIR_LOW, CBURST, EIR_OK, EBURST, |
| 103 | colour=1) |
| 104 | self.assertEqual(stats['exceed_packets'], NUM_PKTS) |
| 105 | |
| 106 | stats = self.run_policer_test("2R3C", CIR_LOW, CBURST, EIR_LOW, EBURST, |
| 107 | colour=1) |
| 108 | self.assertEqual(stats['conform_packets'], 0) |
| 109 | self.assertGreater(stats['exceed_packets'], 0) |
| 110 | self.assertGreater(stats['violate_packets'], 0) |
| 111 | |
| 112 | stats = self.run_policer_test("2R3C", CIR_LOW, CBURST, EIR_OK, EBURST, |
| 113 | colour=2) |
| 114 | self.assertEqual(stats['violate_packets'], NUM_PKTS) |
| 115 | |
| 116 | if __name__ == '__main__': |
| 117 | unittest.main(testRunner=VppTestRunner) |