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-rw-r--r--test/test_policer_input.py146
1 files changed, 146 insertions, 0 deletions
diff --git a/test/test_policer_input.py b/test/test_policer_input.py
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+++ b/test/test_policer_input.py
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+#!/usr/bin/env python3
+# Copyright (c) 2021 Graphiant, Inc.
+
+import unittest
+import scapy.compat
+from scapy.layers.inet import IP, UDP
+from scapy.layers.l2 import Ether
+from scapy.packet import Raw
+from framework import VppTestCase, VppTestRunner
+from vpp_papi import VppEnum
+from vpp_policer import VppPolicer, PolicerAction
+
+NUM_PKTS = 67
+
+
+class TestPolicerInput(VppTestCase):
+ """ Policer on an input interface """
+ vpp_worker_count = 2
+
+ def setUp(self):
+ super(TestPolicerInput, self).setUp()
+
+ self.create_pg_interfaces(range(2))
+ for i in self.pg_interfaces:
+ i.admin_up()
+ i.config_ip4()
+ i.resolve_arp()
+
+ self.pkt = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) /
+ UDP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 100))
+
+ def tearDown(self):
+ for i in self.pg_interfaces:
+ i.unconfig_ip4()
+ i.admin_down()
+ super(TestPolicerInput, self).tearDown()
+
+ def test_policer_input(self):
+ """ Input Policing """
+ pkts = self.pkt * NUM_PKTS
+
+ action_tx = PolicerAction(
+ VppEnum.vl_api_sse2_qos_action_type_t.SSE2_QOS_ACTION_API_TRANSMIT,
+ 0)
+ policer = VppPolicer(self, "pol1", 80, 0, 1000, 0,
+ conform_action=action_tx,
+ exceed_action=action_tx,
+ violate_action=action_tx)
+ policer.add_vpp_config()
+
+ # Start policing on pg0
+ policer.apply_vpp_config(self.pg0.sw_if_index, True)
+
+ rx = self.send_and_expect(self.pg0, pkts, self.pg1, worker=0)
+ stats = policer.get_stats()
+
+ # Single rate, 2 colour policer - expect conform, violate but no exceed
+ self.assertGreater(stats['conform_packets'], 0)
+ self.assertEqual(stats['exceed_packets'], 0)
+ self.assertGreater(stats['violate_packets'], 0)
+
+ # Stop policing on pg0
+ policer.apply_vpp_config(self.pg0.sw_if_index, False)
+
+ rx = self.send_and_expect(self.pg0, pkts, self.pg1, worker=0)
+
+ statsnew = policer.get_stats()
+
+ # No new packets counted
+ self.assertEqual(stats, statsnew)
+
+ policer.remove_vpp_config()
+
+ def test_policer_handoff(self):
+ """ Worker thread handoff """
+ pkts = self.pkt * NUM_PKTS
+
+ action_tx = PolicerAction(
+ VppEnum.vl_api_sse2_qos_action_type_t.SSE2_QOS_ACTION_API_TRANSMIT,
+ 0)
+ policer = VppPolicer(self, "pol2", 80, 0, 1000, 0,
+ conform_action=action_tx,
+ exceed_action=action_tx,
+ violate_action=action_tx)
+ policer.add_vpp_config()
+
+ # Bind the policer to worker 1
+ policer.bind_vpp_config(1, True)
+
+ # Start policing on pg0
+ policer.apply_vpp_config(self.pg0.sw_if_index, True)
+
+ for worker in [0, 1]:
+ self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker)
+ self.logger.debug(self.vapi.cli("show trace max 100"))
+
+ stats = policer.get_stats()
+ stats0 = policer.get_stats(worker=0)
+ stats1 = policer.get_stats(worker=1)
+
+ # Worker 1, should have done all the policing
+ self.assertEqual(stats, stats1)
+
+ # Worker 0, should have handed everything off
+ self.assertEqual(stats0['conform_packets'], 0)
+ self.assertEqual(stats0['exceed_packets'], 0)
+ self.assertEqual(stats0['violate_packets'], 0)
+
+ # Unbind the policer from worker 1 and repeat
+ policer.bind_vpp_config(1, False)
+ for worker in [0, 1]:
+ self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker)
+ self.logger.debug(self.vapi.cli("show trace max 100"))
+
+ # The policer should auto-bind to worker 0 when packets arrive
+ stats = policer.get_stats()
+
+ # The 2 workers should now have policed the same amount
+ stats = policer.get_stats()
+ stats0 = policer.get_stats(worker=0)
+ stats1 = policer.get_stats(worker=1)
+
+ self.assertGreater(stats0['conform_packets'], 0)
+ self.assertEqual(stats0['exceed_packets'], 0)
+ self.assertGreater(stats0['violate_packets'], 0)
+
+ self.assertGreater(stats1['conform_packets'], 0)
+ self.assertEqual(stats1['exceed_packets'], 0)
+ self.assertGreater(stats1['violate_packets'], 0)
+
+ self.assertEqual(stats0['conform_packets'] + stats1['conform_packets'],
+ stats['conform_packets'])
+
+ self.assertEqual(stats0['violate_packets'] + stats1['violate_packets'],
+ stats['violate_packets'])
+
+ # Stop policing on pg0
+ policer.apply_vpp_config(self.pg0.sw_if_index, False)
+
+ policer.remove_vpp_config()
+
+if __name__ == '__main__':
+ unittest.main(testRunner=VppTestRunner)