summaryrefslogtreecommitdiffstats
path: root/src/vnet/policer/test/test_policer_input.py
blob: 29ae58ad5de2fd106e8063647e48a762f3435e6c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
#!/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 """
    worker_config = "workers 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)