vpp/test/test_mdata.py
Dave Wallace 8800f732f8 tests: refactor asf framework code
- Make framework.py classes a subset of asfframework.py classes
- Remove all packet related code from asfframework.py
- Add test class and test case set up debug output to log
- Repatriate packet tests from asf to test directory
- Remove non-packet related code from framework.py and
  inherit them from asfframework.py classes
- Clean up unused import variables
- Re-enable BFD tests on Ubuntu 22.04 and fix
  intermittent test failures in echo_looped_back
  testcases (where # control packets verified but
  not guaranteed to be received during test)
- Re-enable Wireguard tests on Ubuntu 22.04 and fix
  intermittent test failures in handshake ratelimiting
  testcases and event testcase
- Run Wiregard testcase suites solo
- Improve debug output in log.txt
- Increase VCL/LDP post sleep timeout to allow iperf server
  to finish cleanly.
- Fix pcap history files to be sorted by suite and testcase
  and ensure order/timestamp is correct based on creation
  in the testcase.
- Decode pcap files for each suite and testcase for all
  errors or if configured via comandline option / env var
- Improve vpp corefile detection to allow complete corefile
  generation
- Disable vm vpp interfaces testcases on debian11
- Clean up failed unittest dir when retrying failed testcases
  and unify testname directory and failed linknames into
  framwork functions

Type: test

Change-Id: I0764f79ea5bb639d278bf635ed2408d4d5220e1e
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2023-11-03 05:06:43 +00:00

126 lines
4.4 KiB
Python

from asfframework import VppTestRunner
from framework import VppTestCase
import unittest
from config import config
from scapy.layers.l2 import Ether
from scapy.packet import Raw
from scapy.layers.inet import IP, UDP
from random import randint
from util import ppp
@unittest.skipIf("mdata" in config.excluded_plugins, "Exclude mdata plugin tests")
class TestMdataCli(VppTestCase):
"""mdata plugin test"""
@classmethod
def setUpClass(cls):
super(TestMdataCli, cls).setUpClass()
try:
cls.create_pg_interfaces(range(2))
for i in cls.pg_interfaces:
i.config_ip4()
i.resolve_arp()
i.admin_up()
except Exception:
cls.tearDownClass()
raise
@classmethod
def tearDownClass(cls):
for i in cls.pg_interfaces:
i.unconfig_ip4()
i.admin_down()
super(TestMdataCli, cls).tearDownClass()
# https://fd.io/docs/vpp/master/developer/tests/overview.html#example-how-to-add-a-new-test
def create_stream(self, src_if, dst_if, count):
packets = []
for i in range(count):
info = self.create_packet_info(src_if, dst_if)
payload = self.info_to_payload(info)
p = (
Ether(dst=src_if.local_mac, src=src_if.remote_mac)
/ IP(src=src_if.remote_ip4, dst=dst_if.remote_ip4)
/ UDP(sport=randint(49152, 65535), dport=5678)
/ Raw(payload)
)
info.data = p.copy()
packets.append(p)
return packets
def verify_capture(self, src_if, dst_if, capture):
packet_info = None
for packet in capture:
try:
ip = packet[IP]
udp = packet[UDP]
self.logger.debug(f"Converting payload to info for {packet[Raw]}")
# convert the payload to packet info object
payload_info = self.payload_to_info(packet[Raw])
# make sure the indexes match
self.assert_equal(
payload_info.src, src_if.sw_if_index, "source sw_if_index"
)
self.assert_equal(
payload_info.dst, dst_if.sw_if_index, "destination sw_if_index"
)
packet_info = self.get_next_packet_info_for_interface2(
src_if.sw_if_index, dst_if.sw_if_index, packet_info
)
# make sure we didn't run out of saved packets
self.assertIsNotNone(packet_info)
self.assert_equal(
payload_info.index, packet_info.index, "packet info index"
)
saved_packet = packet_info.data # fetch the saved packet
# assert the values match
self.assert_equal(ip.src, saved_packet[IP].src, "IP source address")
# ... more assertions here
self.assert_equal(udp.sport, saved_packet[UDP].sport, "UDP source port")
except Exception:
self.logger.error(ppp("Unexpected or invalid packet:", packet))
raise
remaining_packet = self.get_next_packet_info_for_interface2(
src_if.sw_if_index, dst_if.sw_if_index, packet_info
)
self.assertIsNone(
remaining_packet,
"Interface %s: Packet expected from interface "
"%s didn't arrive" % (dst_if.name, src_if.name),
)
def test_mdata_cli(self):
"""turn on mdata tracking, send packets, verify, check CLI output"""
self.vapi.cli("buffer metadata tracking on")
packets = self.create_stream(self.pg0, self.pg1, 5)
self.pg0.add_stream(packets)
self.pg0.enable_capture()
self.pg1.enable_capture()
self.pg_start()
capture = self.pg1.get_capture()
self.pg0.assert_nothing_captured()
self.verify_capture(self.pg0, self.pg1, capture)
result = self.vapi.cli("show buffer metadata")
expected = [
"ip4-input",
"ip4-rewrite",
"ip4-lookup",
"ethernet-input",
"pg1-tx",
"pg1-output",
]
for entry in expected:
self.assertIn(entry, result)
self.vapi.cli("buffer metadata tracking off")
if __name__ == "__main__":
unittest.main(testRunner=VppTestRunner)