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vpp/test/test_qos.py
Klement Sekera d9b0c6fbf7 tests: replace pycodestyle with black 
Drop pycodestyle for code style checking in favor of black. Black is
much faster, stable PEP8 compliant code style checker offering also
automatic formatting. It aims to be very stable and produce smallest
diffs. It's used by many small and big projects.

Running checkstyle with black takes a few seconds with a terse output.
Thus, test-checkstyle-diff is no longer necessary.

Expand scope of checkstyle to all python files in the repo, replacing
test-checkstyle with checkstyle-python.

Also, fixstyle-python is now available for automatic style formatting.

Note: python virtualenv has been consolidated in test/Makefile,
test/requirements*.txt which will eventually be moved to a central
location.  This is required to simply the automated generation of
docker executor images in the CI.

Type: improvement
Change-Id: I022a326603485f58585e879ac0f697fceefbc9c8
Signed-off-by: Klement Sekera <klement.sekera@gmail.com>
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2022-05-10 18:52:08 +00:00

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#!/usr/bin/env python3
import unittest
from framework import VppTestCase, VppTestRunner
from vpp_sub_interface import VppDot1QSubint
from vpp_ip import DpoProto
from vpp_ip_route import (
VppIpRoute,
VppRoutePath,
VppMplsRoute,
VppMplsLabel,
VppMplsTable,
FibPathProto,
)
import scapy.compat
from scapy.packet import Raw
from scapy.layers.l2 import Ether, Dot1Q
from scapy.layers.inet import IP, UDP
from scapy.layers.inet6 import IPv6
from scapy.contrib.mpls import MPLS
from vpp_papi import VppEnum
from vpp_qos import VppQosRecord, VppQosEgressMap, VppQosMark, VppQosStore
NUM_PKTS = 67
class TestQOS(VppTestCase):
"""QOS Test Case"""
# Note: Since the enums aren't created dynamically until after
# the papi client attaches to VPP, we put it in a property to
# ensure it is the value at runtime, not at module load time.
@property
def QOS_SOURCE(self):
return VppEnum.vl_api_qos_source_t
@classmethod
def setUpClass(cls):
super(TestQOS, cls).setUpClass()
@classmethod
def tearDownClass(cls):
super(TestQOS, cls).tearDownClass()
def setUp(self):
super(TestQOS, self).setUp()
self.create_pg_interfaces(range(5))
tbl = VppMplsTable(self, 0)
tbl.add_vpp_config()
for i in self.pg_interfaces:
i.admin_up()
i.config_ip4()
i.resolve_arp()
i.config_ip6()
i.resolve_ndp()
i.enable_mpls()
def tearDown(self):
for i in self.pg_interfaces:
i.unconfig_ip4()
i.unconfig_ip6()
i.disable_mpls()
super(TestQOS, self).tearDown()
def test_qos_ip(self):
"""QoS Mark/Record/Store IP"""
#
# for table 1 map the n=0xff possible values of input QoS mark,
# n to 1-n
#
output = [scapy.compat.chb(0)] * 256
for i in range(0, 255):
output[i] = scapy.compat.chb(255 - i)
os = b"".join(output)
rows = [{"outputs": os}, {"outputs": os}, {"outputs": os}, {"outputs": os}]
qem1 = VppQosEgressMap(self, 1, rows).add_vpp_config()
#
# For table 2 (and up) use the value n for everything
#
output = [scapy.compat.chb(2)] * 256
os = b"".join(output)
rows = [{"outputs": os}, {"outputs": os}, {"outputs": os}, {"outputs": os}]
qem2 = VppQosEgressMap(self, 2, rows).add_vpp_config()
output = [scapy.compat.chb(3)] * 256
os = b"".join(output)
rows = [{"outputs": os}, {"outputs": os}, {"outputs": os}, {"outputs": os}]
qem3 = VppQosEgressMap(self, 3, rows).add_vpp_config()
output = [scapy.compat.chb(4)] * 256
os = b"".join(output)
rows = [{"outputs": os}, {"outputs": os}, {"outputs": os}, {"outputs": os}]
qem4 = VppQosEgressMap(self, 4, rows).add_vpp_config()
qem5 = VppQosEgressMap(self, 5, rows).add_vpp_config()
qem6 = VppQosEgressMap(self, 6, rows).add_vpp_config()
qem7 = VppQosEgressMap(self, 7, rows).add_vpp_config()
self.assertTrue(qem7.query_vpp_config())
self.logger.info(self.vapi.cli("sh qos eg map"))
#
# Bind interface pgN to table n
#
qm1 = VppQosMark(
self, self.pg1, qem1, self.QOS_SOURCE.QOS_API_SOURCE_IP
).add_vpp_config()
qm2 = VppQosMark(
self, self.pg2, qem2, self.QOS_SOURCE.QOS_API_SOURCE_IP
).add_vpp_config()
qm3 = VppQosMark(
self, self.pg3, qem3, self.QOS_SOURCE.QOS_API_SOURCE_IP
).add_vpp_config()
qm4 = VppQosMark(
self, self.pg4, qem4, self.QOS_SOURCE.QOS_API_SOURCE_IP
).add_vpp_config()
self.assertTrue(qm3.query_vpp_config())
self.logger.info(self.vapi.cli("sh qos mark"))
#
# packets ingress on Pg0
#
p_v4 = (
Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
/ IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4, tos=1)
/ UDP(sport=1234, dport=1234)
/ Raw(scapy.compat.chb(100) * NUM_PKTS)
)
p_v6 = (
Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
/ IPv6(src=self.pg0.remote_ip6, dst=self.pg1.remote_ip6, tc=1)
/ UDP(sport=1234, dport=1234)
/ Raw(scapy.compat.chb(100) * NUM_PKTS)
)
#
# Since we have not yet enabled the recording of the input QoS
# from the input iP header, the egress packet's ToS will be unchanged
#
rx = self.send_and_expect(self.pg0, p_v4 * NUM_PKTS, self.pg1)
for p in rx:
self.assertEqual(p[IP].tos, 1)
rx = self.send_and_expect(self.pg0, p_v6 * NUM_PKTS, self.pg1)
for p in rx:
self.assertEqual(p[IPv6].tc, 1)
#
# Enable QoS recording on IP input for pg0
#
qr1 = VppQosRecord(self, self.pg0, self.QOS_SOURCE.QOS_API_SOURCE_IP)
qr1.add_vpp_config()
self.logger.info(self.vapi.cli("sh qos record"))
#
# send the same packets, this time expect the input TOS of 1
# to be mapped to pg1's egress value of 254
#
rx = self.send_and_expect(self.pg0, p_v4 * NUM_PKTS, self.pg1)
for p in rx:
self.assertEqual(p[IP].tos, 254)
rx = self.send_and_expect(self.pg0, p_v6 * NUM_PKTS, self.pg1)
for p in rx:
self.assertEqual(p[IPv6].tc, 254)
#
# different input ToS to test the mapping
#
p_v4[IP].tos = 127
rx = self.send_and_expect(self.pg0, p_v4 * NUM_PKTS, self.pg1)
for p in rx:
self.assertEqual(p[IP].tos, 128)
p_v6[IPv6].tc = 127
rx = self.send_and_expect(self.pg0, p_v6 * NUM_PKTS, self.pg1)
for p in rx:
self.assertEqual(p[IPv6].tc, 128)
p_v4[IP].tos = 254
rx = self.send_and_expect(self.pg0, p_v4 * NUM_PKTS, self.pg1)
for p in rx:
self.assertEqual(p[IP].tos, 1)
p_v6[IPv6].tc = 254
rx = self.send_and_expect(self.pg0, p_v6 * NUM_PKTS, self.pg1)
for p in rx:
self.assertEqual(p[IPv6].tc, 1)
#
# send packets out the other interfaces to test the maps are
# correctly applied
#
p_v4[IP].dst = self.pg2.remote_ip4
rx = self.send_and_expect(self.pg0, p_v4 * NUM_PKTS, self.pg2)
for p in rx:
self.assertEqual(p[IP].tos, 2)
p_v4[IP].dst = self.pg3.remote_ip4
rx = self.send_and_expect(self.pg0, p_v4 * NUM_PKTS, self.pg3)
for p in rx:
self.assertEqual(p[IP].tos, 3)
p_v6[IPv6].dst = self.pg3.remote_ip6
rx = self.send_and_expect(self.pg0, p_v6 * NUM_PKTS, self.pg3)
for p in rx:
self.assertEqual(p[IPv6].tc, 3)
#
# remove the map on pg2 and pg3, now expect an unchanged IP tos
#
qm2.remove_vpp_config()
qm3.remove_vpp_config()
self.logger.info(self.vapi.cli("sh qos mark"))
self.assertFalse(qm3.query_vpp_config())
self.logger.info(self.vapi.cli("sh int feat pg2"))
p_v4[IP].dst = self.pg2.remote_ip4
rx = self.send_and_expect(self.pg0, p_v4 * NUM_PKTS, self.pg2)
for p in rx:
self.assertEqual(p[IP].tos, 254)
p_v4[IP].dst = self.pg3.remote_ip4
rx = self.send_and_expect(self.pg0, p_v4 * NUM_PKTS, self.pg3)
for p in rx:
self.assertEqual(p[IP].tos, 254)
#
# still mapping out of pg1
#
p_v4[IP].dst = self.pg1.remote_ip4
rx = self.send_and_expect(self.pg0, p_v4 * NUM_PKTS, self.pg1)
for p in rx:
self.assertEqual(p[IP].tos, 1)
#
# disable the input recording on pg0
#
self.assertTrue(qr1.query_vpp_config())
qr1.remove_vpp_config()
#
# back to an unchanged TOS value
#
rx = self.send_and_expect(self.pg0, p_v4 * NUM_PKTS, self.pg1)
for p in rx:
self.assertEqual(p[IP].tos, 254)
#
# enable QoS stroe instead of record
#
qst1 = VppQosStore(
self, self.pg0, self.QOS_SOURCE.QOS_API_SOURCE_IP, 5
).add_vpp_config()
self.logger.info(self.vapi.cli("sh qos store"))
p_v4[IP].dst = self.pg1.remote_ip4
rx = self.send_and_expect(self.pg0, p_v4 * NUM_PKTS, self.pg1)
for p in rx:
self.assertEqual(p[IP].tos, 250)
#
# disable the input storing on pg0
#
self.assertTrue(qst1.query_vpp_config())
qst1.remove_vpp_config()
#
# back to an unchanged TOS value
#
rx = self.send_and_expect(self.pg0, p_v4 * NUM_PKTS, self.pg1)
for p in rx:
self.assertEqual(p[IP].tos, 254)
#
# disable the egress map on pg1 and pg4
#
qm1.remove_vpp_config()
qm4.remove_vpp_config()
#
# unchanged Tos on pg1
#
rx = self.send_and_expect(self.pg0, p_v4 * NUM_PKTS, self.pg1)
for p in rx:
self.assertEqual(p[IP].tos, 254)
def test_qos_mpls(self):
"""QoS Mark/Record MPLS"""
#
# 255 QoS for all input values
#
from_ext = 7
from_ip = 6
from_mpls = 5
from_vlan = 4
output = [scapy.compat.chb(from_ext)] * 256
os1 = b"".join(output)
output = [scapy.compat.chb(from_vlan)] * 256
os2 = b"".join(output)
output = [scapy.compat.chb(from_mpls)] * 256
os3 = b"".join(output)
output = [scapy.compat.chb(from_ip)] * 256
os4 = b"".join(output)
rows = [{"outputs": os1}, {"outputs": os2}, {"outputs": os3}, {"outputs": os4}]
qem1 = VppQosEgressMap(self, 1, rows).add_vpp_config()
#
# a route with 1 MPLS label
#
route_10_0_0_1 = VppIpRoute(
self,
"10.0.0.1",
32,
[VppRoutePath(self.pg1.remote_ip4, self.pg1.sw_if_index, labels=[32])],
)
route_10_0_0_1.add_vpp_config()
#
# a route with 3 MPLS labels
#
route_10_0_0_3 = VppIpRoute(
self,
"10.0.0.3",
32,
[
VppRoutePath(
self.pg1.remote_ip4, self.pg1.sw_if_index, labels=[63, 33, 34]
)
],
)
route_10_0_0_3.add_vpp_config()
#
# enable IP QoS recording on the input Pg0 and MPLS egress marking
# on Pg1
#
qr1 = VppQosRecord(
self, self.pg0, self.QOS_SOURCE.QOS_API_SOURCE_IP
).add_vpp_config()
qm1 = VppQosMark(
self, self.pg1, qem1, self.QOS_SOURCE.QOS_API_SOURCE_MPLS
).add_vpp_config()
#
# packet that will get one label added and 3 labels added resp.
#
p_1 = (
Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
/ IP(src=self.pg0.remote_ip4, dst="10.0.0.1", tos=1)
/ UDP(sport=1234, dport=1234)
/ Raw(scapy.compat.chb(100) * NUM_PKTS)
)
p_3 = (
Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
/ IP(src=self.pg0.remote_ip4, dst="10.0.0.3", tos=1)
/ UDP(sport=1234, dport=1234)
/ Raw(scapy.compat.chb(100) * NUM_PKTS)
)
rx = self.send_and_expect(self.pg0, p_1 * NUM_PKTS, self.pg1)
#
# only 3 bits of ToS value in MPLS make sure tos is correct
# and the label and EOS bit have not been corrupted
#
for p in rx:
self.assertEqual(p[MPLS].cos, from_ip)
self.assertEqual(p[MPLS].label, 32)
self.assertEqual(p[MPLS].s, 1)
rx = self.send_and_expect(self.pg0, p_3 * NUM_PKTS, self.pg1)
for p in rx:
self.assertEqual(p[MPLS].cos, from_ip)
self.assertEqual(p[MPLS].label, 63)
self.assertEqual(p[MPLS].s, 0)
h = p[MPLS].payload
self.assertEqual(h[MPLS].cos, from_ip)
self.assertEqual(h[MPLS].label, 33)
self.assertEqual(h[MPLS].s, 0)
h = h[MPLS].payload
self.assertEqual(h[MPLS].cos, from_ip)
self.assertEqual(h[MPLS].label, 34)
self.assertEqual(h[MPLS].s, 1)
#
# enable MPLS QoS recording on the input Pg0 and IP egress marking
# on Pg1
#
qr2 = VppQosRecord(
self, self.pg0, self.QOS_SOURCE.QOS_API_SOURCE_MPLS
).add_vpp_config()
qm2 = VppQosMark(
self, self.pg1, qem1, self.QOS_SOURCE.QOS_API_SOURCE_IP
).add_vpp_config()
#
# MPLS x-connect - COS according to pg1 map
#
route_32_eos = VppMplsRoute(
self,
32,
1,
[
VppRoutePath(
self.pg1.remote_ip4, self.pg1.sw_if_index, labels=[VppMplsLabel(33)]
)
],
)
route_32_eos.add_vpp_config()
p_m1 = (
Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
/ MPLS(label=32, cos=3, ttl=2)
/ IP(src=self.pg0.remote_ip4, dst="10.0.0.1", tos=1)
/ UDP(sport=1234, dport=1234)
/ Raw(scapy.compat.chb(100) * NUM_PKTS)
)
rx = self.send_and_expect(self.pg0, p_m1 * NUM_PKTS, self.pg1)
for p in rx:
self.assertEqual(p[MPLS].cos, from_mpls)
self.assertEqual(p[MPLS].label, 33)
self.assertEqual(p[MPLS].s, 1)
#
# MPLS deag - COS is copied from MPLS to IP
#
route_33_eos = VppMplsRoute(
self, 33, 1, [VppRoutePath("0.0.0.0", 0xFFFFFFFF, nh_table_id=0)]
)
route_33_eos.add_vpp_config()
route_10_0_0_4 = VppIpRoute(
self,
"10.0.0.4",
32,
[VppRoutePath(self.pg1.remote_ip4, self.pg1.sw_if_index)],
)
route_10_0_0_4.add_vpp_config()
p_m2 = (
Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
/ MPLS(label=33, ttl=2, cos=3)
/ IP(src=self.pg0.remote_ip4, dst="10.0.0.4", tos=1)
/ UDP(sport=1234, dport=1234)
/ Raw(scapy.compat.chb(100) * NUM_PKTS)
)
rx = self.send_and_expect(self.pg0, p_m2 * NUM_PKTS, self.pg1)
for p in rx:
self.assertEqual(p[IP].tos, from_mpls)
def test_qos_vlan(self):
"""QoS mark/record VLAN"""
#
# QoS for all input values
#
output = [scapy.compat.chb(0)] * 256
for i in range(0, 255):
output[i] = scapy.compat.chb(255 - i)
os = b"".join(output)
rows = [{"outputs": os}, {"outputs": os}, {"outputs": os}, {"outputs": os}]
qem1 = VppQosEgressMap(self, 1, rows).add_vpp_config()
sub_if = VppDot1QSubint(self, self.pg0, 11)
sub_if.admin_up()
sub_if.config_ip4()
sub_if.resolve_arp()
sub_if.config_ip6()
sub_if.resolve_ndp()
#
# enable VLAN QoS recording/marking on the input Pg0 subinterface and
#
qr_v = VppQosRecord(
self, sub_if, self.QOS_SOURCE.QOS_API_SOURCE_VLAN
).add_vpp_config()
qm_v = VppQosMark(
self, sub_if, qem1, self.QOS_SOURCE.QOS_API_SOURCE_VLAN
).add_vpp_config()
#
# IP marking/recording on pg1
#
qr_ip = VppQosRecord(
self, self.pg1, self.QOS_SOURCE.QOS_API_SOURCE_IP
).add_vpp_config()
qm_ip = VppQosMark(
self, self.pg1, qem1, self.QOS_SOURCE.QOS_API_SOURCE_IP
).add_vpp_config()
#
# a routes to/from sub-interface
#
route_10_0_0_1 = VppIpRoute(
self, "10.0.0.1", 32, [VppRoutePath(sub_if.remote_ip4, sub_if.sw_if_index)]
)
route_10_0_0_1.add_vpp_config()
route_10_0_0_2 = VppIpRoute(
self,
"10.0.0.2",
32,
[VppRoutePath(self.pg1.remote_ip4, self.pg1.sw_if_index)],
)
route_10_0_0_2.add_vpp_config()
route_2001_1 = VppIpRoute(
self, "2001::1", 128, [VppRoutePath(sub_if.remote_ip6, sub_if.sw_if_index)]
)
route_2001_1.add_vpp_config()
route_2001_2 = VppIpRoute(
self,
"2001::2",
128,
[VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)],
)
route_2001_2.add_vpp_config()
p_v1 = (
Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
/ Dot1Q(vlan=11, prio=1)
/ IP(src="1.1.1.1", dst="10.0.0.2", tos=1)
/ UDP(sport=1234, dport=1234)
/ Raw(scapy.compat.chb(100) * NUM_PKTS)
)
p_v2 = (
Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
/ IP(src="1.1.1.1", dst="10.0.0.1", tos=1)
/ UDP(sport=1234, dport=1234)
/ Raw(scapy.compat.chb(100) * NUM_PKTS)
)
p_v3 = (
Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
/ Dot1Q(vlan=11, prio=1, id=1)
/ IP(src="1.1.1.1", dst="10.0.0.2", tos=2)
/ UDP(sport=1234, dport=1234)
/ Raw(scapy.compat.chb(100) * NUM_PKTS)
)
rx = self.send_and_expect(self.pg1, p_v2 * NUM_PKTS, self.pg0)
for p in rx:
self.assertEqual(p[Dot1Q].prio, 7)
self.assertEqual(p[Dot1Q].id, 0)
rx = self.send_and_expect(self.pg0, p_v3 * NUM_PKTS, self.pg1)
for p in rx:
self.assertEqual(p[IP].tos, 252)
rx = self.send_and_expect(self.pg0, p_v1 * NUM_PKTS, self.pg1)
for p in rx:
self.assertEqual(p[IP].tos, 253)
p_v1 = (
Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
/ Dot1Q(vlan=11, prio=2)
/ IPv6(src="2001::1", dst="2001::2", tc=1)
/ UDP(sport=1234, dport=1234)
/ Raw(scapy.compat.chb(100) * NUM_PKTS)
)
p_v2 = (
Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
/ IPv6(src="3001::1", dst="2001::1", tc=1)
/ UDP(sport=1234, dport=1234)
/ Raw(scapy.compat.chb(100) * NUM_PKTS)
)
rx = self.send_and_expect(self.pg1, p_v2 * NUM_PKTS, self.pg0)
for p in rx:
self.assertEqual(p[Dot1Q].prio, 7)
self.assertEqual(p[Dot1Q].id, 0)
rx = self.send_and_expect(self.pg0, p_v1 * NUM_PKTS, self.pg1)
for p in rx:
self.assertEqual(p[IPv6].tc, 251)
#
# cleanup
#
sub_if.unconfig_ip4()
sub_if.unconfig_ip6()
if __name__ == "__main__":
unittest.main(testRunner=VppTestRunner)
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