vpp/test/test_l2_flood.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

360 lines
10 KiB
Python

#!/usr/bin/env python3
import unittest
import socket
from framework import VppTestCase, VppTestRunner
from vpp_ip_route import VppIpRoute, VppRoutePath
from vpp_l2 import L2_PORT_TYPE, BRIDGE_FLAGS
from scapy.packet import Raw
from scapy.layers.l2 import Ether
from scapy.layers.inet import IP, UDP
NUM_PKTS = 67
class TestL2Flood(VppTestCase):
"""L2-flood"""
@classmethod
def setUpClass(cls):
super(TestL2Flood, cls).setUpClass()
@classmethod
def tearDownClass(cls):
super(TestL2Flood, cls).tearDownClass()
def setUp(self):
super(TestL2Flood, self).setUp()
# 12 l2 interface and one l3
self.create_pg_interfaces(range(13))
self.create_bvi_interfaces(1)
for i in self.pg_interfaces:
i.admin_up()
for i in self.bvi_interfaces:
i.admin_up()
self.pg12.config_ip4()
self.pg12.resolve_arp()
self.bvi0.config_ip4()
def tearDown(self):
self.pg12.unconfig_ip4()
self.bvi0.unconfig_ip4()
for i in self.pg_interfaces:
i.admin_down()
for i in self.bvi_interfaces:
i.admin_down()
super(TestL2Flood, self).tearDown()
def test_flood(self):
"""L2 Flood Tests"""
#
# Create a single bridge Domain
#
self.vapi.bridge_domain_add_del(bd_id=1)
#
# add each interface to the BD. 3 interfaces per split horizon group
#
for i in self.pg_interfaces[0:4]:
self.vapi.sw_interface_set_l2_bridge(
rx_sw_if_index=i.sw_if_index, bd_id=1, shg=0
)
for i in self.pg_interfaces[4:8]:
self.vapi.sw_interface_set_l2_bridge(
rx_sw_if_index=i.sw_if_index, bd_id=1, shg=1
)
for i in self.pg_interfaces[8:12]:
self.vapi.sw_interface_set_l2_bridge(
rx_sw_if_index=i.sw_if_index, bd_id=1, shg=2
)
for i in self.bvi_interfaces:
self.vapi.sw_interface_set_l2_bridge(
rx_sw_if_index=i.sw_if_index, bd_id=1, shg=2, port_type=L2_PORT_TYPE.BVI
)
p = (
Ether(dst="ff:ff:ff:ff:ff:ff", src="00:00:de:ad:be:ef")
/ IP(src="10.10.10.10", dst="1.1.1.1")
/ UDP(sport=1234, dport=1234)
/ Raw(b"\xa5" * 100)
)
#
# input on pg0 expect copies on pg1->11
# this is in SHG=0 so its flooded to all, expect the pg0 since that's
# the ingress link
#
self.pg0.add_stream(p * NUM_PKTS)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
for i in self.pg_interfaces[1:12]:
rx0 = i.get_capture(NUM_PKTS, timeout=1)
#
# input on pg4 (SHG=1) expect copies on pg0->3 (SHG=0)
# and pg8->11 (SHG=2)
#
self.pg4.add_stream(p * NUM_PKTS)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
for i in self.pg_interfaces[:4]:
rx0 = i.get_capture(NUM_PKTS, timeout=1)
for i in self.pg_interfaces[8:12]:
rx0 = i.get_capture(NUM_PKTS, timeout=1)
for i in self.pg_interfaces[4:8]:
i.assert_nothing_captured(remark="Different SH group")
#
# An IP route so the packet that hits the BVI is sent out of pg12
#
ip_route = VppIpRoute(
self,
"1.1.1.1",
32,
[VppRoutePath(self.pg12.remote_ip4, self.pg12.sw_if_index)],
)
ip_route.add_vpp_config()
self.logger.info(self.vapi.cli("sh bridge 1 detail"))
#
# input on pg0 expect copies on pg1->12
# this is in SHG=0 so its flooded to all, expect the pg0 since that's
# the ingress link
#
self.pg0.add_stream(p * NUM_PKTS)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
for i in self.pg_interfaces[1:]:
rx0 = i.get_capture(NUM_PKTS, timeout=1)
#
# input on pg4 (SHG=1) expect copies on pg0->3 (SHG=0)
# and pg8->12 (SHG=2)
#
self.pg4.add_stream(p * NUM_PKTS)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
for i in self.pg_interfaces[:4]:
rx0 = i.get_capture(NUM_PKTS, timeout=1)
for i in self.pg_interfaces[8:13]:
rx0 = i.get_capture(NUM_PKTS, timeout=1)
for i in self.pg_interfaces[4:8]:
i.assert_nothing_captured(remark="Different SH group")
#
# cleanup
#
for i in self.pg_interfaces[:12]:
self.vapi.sw_interface_set_l2_bridge(
rx_sw_if_index=i.sw_if_index, bd_id=1, enable=0
)
for i in self.bvi_interfaces:
self.vapi.sw_interface_set_l2_bridge(
rx_sw_if_index=i.sw_if_index,
bd_id=1,
shg=2,
port_type=L2_PORT_TYPE.BVI,
enable=0,
)
self.vapi.bridge_domain_add_del(bd_id=1, is_add=0)
def test_flood_one(self):
"""L2 no-Flood Test"""
#
# Create a single bridge Domain
#
self.vapi.bridge_domain_add_del(bd_id=1)
#
# add 2 interfaces to the BD. this means a flood goes to only
# one member
#
for i in self.pg_interfaces[:2]:
self.vapi.sw_interface_set_l2_bridge(
rx_sw_if_index=i.sw_if_index, bd_id=1, shg=0
)
p = (
Ether(dst="ff:ff:ff:ff:ff:ff", src="00:00:de:ad:be:ef")
/ IP(src="10.10.10.10", dst="1.1.1.1")
/ UDP(sport=1234, dport=1234)
/ Raw(b"\xa5" * 100)
)
#
# input on pg0 expect copies on pg1
#
self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg1)
#
# cleanup
#
for i in self.pg_interfaces[:2]:
self.vapi.sw_interface_set_l2_bridge(
rx_sw_if_index=i.sw_if_index, bd_id=1, enable=0
)
self.vapi.bridge_domain_add_del(bd_id=1, is_add=0)
def test_uu_fwd(self):
"""UU Flood"""
#
# Create a single bridge Domain
#
self.vapi.bridge_domain_add_del(bd_id=1, uu_flood=1)
#
# add each interface to the BD. 3 interfaces per split horizon group
#
for i in self.pg_interfaces[0:4]:
self.vapi.sw_interface_set_l2_bridge(
rx_sw_if_index=i.sw_if_index, bd_id=1, shg=0
)
#
# an unknown unicast and broadcast packets
#
p_uu = (
Ether(dst="00:00:00:c1:5c:00", src="00:00:de:ad:be:ef")
/ IP(src="10.10.10.10", dst="1.1.1.1")
/ UDP(sport=1234, dport=1234)
/ Raw(b"\xa5" * 100)
)
p_bm = (
Ether(dst="ff:ff:ff:ff:ff:ff", src="00:00:de:ad:be:ef")
/ IP(src="10.10.10.10", dst="1.1.1.1")
/ UDP(sport=1234, dport=1234)
/ Raw(b"\xa5" * 100)
)
#
# input on pg0, expected copies on pg1->4
#
self.pg0.add_stream(p_uu * NUM_PKTS)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
for i in self.pg_interfaces[1:4]:
rx0 = i.get_capture(NUM_PKTS, timeout=1)
self.pg0.add_stream(p_bm * NUM_PKTS)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
for i in self.pg_interfaces[1:4]:
rx0 = i.get_capture(NUM_PKTS, timeout=1)
#
# use pg8 as the uu-fwd interface
#
self.vapi.sw_interface_set_l2_bridge(
rx_sw_if_index=self.pg8.sw_if_index,
bd_id=1,
shg=0,
port_type=L2_PORT_TYPE.UU_FWD,
)
#
# expect the UU packet on the uu-fwd interface and not be flooded
#
self.pg0.add_stream(p_uu * NUM_PKTS)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx0 = self.pg8.get_capture(NUM_PKTS, timeout=1)
for i in self.pg_interfaces[0:4]:
i.assert_nothing_captured(remark="UU not flooded")
self.pg0.add_stream(p_bm * NUM_PKTS)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
for i in self.pg_interfaces[1:4]:
rx0 = i.get_capture(NUM_PKTS, timeout=1)
#
# remove the uu-fwd interface and expect UU to be flooded again
#
self.vapi.sw_interface_set_l2_bridge(
rx_sw_if_index=self.pg8.sw_if_index,
bd_id=1,
shg=0,
port_type=L2_PORT_TYPE.UU_FWD,
enable=0,
)
self.pg0.add_stream(p_uu * NUM_PKTS)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
for i in self.pg_interfaces[1:4]:
rx0 = i.get_capture(NUM_PKTS, timeout=1)
#
# change the BD config to not support UU-flood
#
self.vapi.bridge_flags(bd_id=1, is_set=0, flags=BRIDGE_FLAGS.UU_FLOOD)
self.send_and_assert_no_replies(self.pg0, p_uu)
#
# re-add the uu-fwd interface
#
self.vapi.sw_interface_set_l2_bridge(
rx_sw_if_index=self.pg8.sw_if_index,
bd_id=1,
shg=0,
port_type=L2_PORT_TYPE.UU_FWD,
)
self.logger.info(self.vapi.cli("sh bridge 1 detail"))
self.pg0.add_stream(p_uu * NUM_PKTS)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx0 = self.pg8.get_capture(NUM_PKTS, timeout=1)
for i in self.pg_interfaces[0:4]:
i.assert_nothing_captured(remark="UU not flooded")
#
# remove the uu-fwd interface
#
self.vapi.sw_interface_set_l2_bridge(
rx_sw_if_index=self.pg8.sw_if_index,
bd_id=1,
shg=0,
port_type=L2_PORT_TYPE.UU_FWD,
enable=0,
)
self.send_and_assert_no_replies(self.pg0, p_uu)
#
# cleanup
#
for i in self.pg_interfaces[:4]:
self.vapi.sw_interface_set_l2_bridge(
rx_sw_if_index=i.sw_if_index, bd_id=1, enable=0
)
self.vapi.bridge_domain_add_del(bd_id=1, is_add=0)
if __name__ == "__main__":
unittest.main(testRunner=VppTestRunner)