6e66ea75a0
- Use of well known UDP port numbers causes random failure of mdata and bufmon tests Type: test Change-Id: I21a01c54e5f166aea101d3caace85b53f3f7285d Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
131 lines
4.6 KiB
Python
131 lines
4.6 KiB
Python
from framework import VppTestCase, VppTestRunner
|
|
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("bufmon" in config.excluded_plugins, "Exclude bufmon plugin tests")
|
|
class TestBufmon(VppTestCase):
|
|
"""bufmon plugin test"""
|
|
|
|
@classmethod
|
|
def setUpClass(cls):
|
|
super(TestBufmon, 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(TestBufmon, 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]
|
|
# 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_bufmon(self):
|
|
self.vapi.cli("set buffer traces on")
|
|
|
|
reply = self.vapi.cli("show buffer traces status")
|
|
self.assertIn("buffers tracing is on", reply)
|
|
|
|
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)
|
|
|
|
expected = [
|
|
"pg-input",
|
|
"ip4-input",
|
|
"ip4-rewrite",
|
|
"ip4-lookup",
|
|
"ethernet-input",
|
|
"pg1-tx",
|
|
"pg1-output",
|
|
]
|
|
reply = self.vapi.cli("show buffer traces verbose")
|
|
for entry in expected:
|
|
self.assertIn(entry, reply)
|
|
|
|
# not verbose, skips nodes w/o buffered buffers
|
|
reply = self.vapi.cli("show buffer traces")
|
|
self.assertNotIn("pg-input", reply)
|
|
|
|
self.vapi.cli("clear buffer traces")
|
|
reply = self.vapi.cli("show buffer traces verbose")
|
|
self.assertNotIn("pg-input", reply)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main(testRunner=VppTestRunner)
|