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test_xdp_filter.py
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#!/usr/bin/python3
import unittest
import os
import time
import fixtures
import utils
from config import *
from logger_module import *
class XDP_FILTER_CASES(unittest.TestCase):
@classmethod
def setUpClass(cls):
logger.info(f"{TITLE_WRAPPER} START TEST [{cls.id}] {TITLE_WRAPPER}")
os.chdir(XDP_FILTER_DIRECTORY)
fixtures.setup()
fixtures.pre_check()
@classmethod
def tearDownClass(cls):
try:
utils.run_cmd_local(f"{XDP_FILTER} unload {HOST_IFNAME}", wait_time=3)
except:
pass
fixtures.clear_env()
os.chdir(os.path.dirname(__file__))
def setUp(self):
logger.info(f"{TITLE_WRAPPER} START TEST [{self.id()}] {TITLE_WRAPPER}")
def tearDown(self):
DEFAULT_TIER = {
"tier1": {
"verbose": [""]
},
"tier2": {
"verbose": ["", "-v", "-vv"]
}
}
try:
utils.run_cmd_local(f"{XDP_FILTER} unload {HOST_IFNAME}")
except:
pass
time.sleep(3)
logger.info(f"{TITLE_WRAPPER} END TEST [{self.id()}] {TITLE_WRAPPER}")
def get_status(self):
err, status, rc = utils.run_cmd_local(f"{XDP_FILTER} status")
return status
def xdp_filter_case1_load_features(self):
features = ["tcp", "udp", "ipv6", "ipv4", "ethernet", "all"]
feature_object = {
"allow_tcp": "xdpfilt_alw_tcp",
"allow_udp": "xdpfilt_alw_udp",
"allow_ipv4": "xdpfilt_alw_ip",
"allow_ipv6": "xdpfilt_alw_ip",
"allow_ethernet": "xdpfilt_alw_eth",
"allow_all": "xdpfilt_alw_all",
"deny_tcp": "xdpfilt_dny_tcp",
"deny_udp": "xdpfilt_dny_udp",
"deny_ipv4": "xdpfilt_dny_ip",
"deny_ipv6": "xdpfilt_dny_ip",
"deny_ethernet": "xdpfilt_dny_eth",
"deny_all": "xdpfilt_dny_all"
}
for policy in ["allow", "deny"]:
for mode in TEST_MODE:
for feature in features:
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} load -p {policy} -m {mode} -f {feature} {HOST_IFNAME}")
self.assertEqual(rc, 0, err)
self.assertIn(feature_object[f"{policy}_{feature}"], self.get_status())
utils.run_cmd_local(f"{XDP_FILTER} unload {HOST_IFNAME}", wait_time=3)
def xdp_filter_case2_ip(self):
DEFAULT_TIER['tier1']['status'] = [""]
DEFAULT_TIER['tier2']['status'] = ["", "--status"]
for status in DEFAULT_TIER[TIER]['status']:
for verbose in DEFAULT_TIER[TIER]['verbose']:
for policy in ["allow", "deny"]:
for mode in TEST_MODE:
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} load -p {policy} -m {mode} {HOST_IFNAME} {verbose}")
self.assertEqual(rc, 0, err)
for filter_mode in ["src", "dst"]:
for proto in ["ipv4", "ipv6"]:
if filter_mode == "src":
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} ip -m {filter_mode} {CLIENT_ADDRESS[proto]} {status} {verbose}")
self.assertIn(CLIENT_ADDRESS[proto], self.get_status())
# Check filter mode and address info in --status output
if status != "":
self.assertIn(filter_mode, output)
self.assertIn(CLIENT_ADDRESS[proto], output)
elif filter_mode == "dst":
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} ip -m {filter_mode} {SERVER_ADDRESS[proto]} {status} {verbose}")
self.assertIn(SERVER_ADDRESS[proto], self.get_status())
# Check filter mode and address info in --status output
if status != "":
self.assertIn(filter_mode, output)
self.assertIn(SERVER_ADDRESS[proto], output)
# check return code
self.assertEqual(rc, 0, err)
# Check filter mode info in xdp-filter status output
self.assertIn(filter_mode, self.get_status())
# In allow policy, all unmatched packets will pass and the matched packets will be droped
# In deny policy, all unmatched packets will be droped and the matched packets will pass
if policy == "allow":
self.assertFalse(utils.ping_from_remote(proto, 3))
elif policy == "deny":
self.assertTrue(utils.ping_from_remote(proto, 3))
# Test clear rules
if filter_mode == "src":
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} ip -r -m {filter_mode} {CLIENT_ADDRESS[proto]} {verbose} {status}")
self.assertNotIn(CLIENT_ADDRESS[proto], self.get_status())
elif filter_mode == "dst":
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} ip -r -m {filter_mode} {SERVER_ADDRESS[proto]} {verbose} {status}")
self.assertNotIn(SERVER_ADDRESS[proto], self.get_status())
self.assertEqual(rc, 0, err)
self.assertNotIn(filter_mode, self.get_status())
utils.run_cmd_local(f"{XDP_FILTER} unload {HOST_IFNAME}", wait_time=3)
def xdp_filter_case3_ether(self):
DEFAULT_TIER['tier1']['status'] = [""]
DEFAULT_TIER['tier2']['status'] = ["", "--status"]
local_mac = utils.get_localif_mac(HOST_IFNAME)
remote_mac = utils.get_remoteif_mac(REMOTE_IFNAME)
for status in DEFAULT_TIER[TIER]['status']:
for verbose in DEFAULT_TIER[TIER]['verbose']:
for policy in ["allow", "deny"]:
for mode in TEST_MODE:
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} load -p {policy} -m {mode} {HOST_IFNAME} {verbose}")
self.assertEqual(rc, 0, err)
for filter_mode in ["src", "dst"]:
if filter_mode == "src":
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} ether -m {filter_mode} {remote_mac} {status} {verbose}")
self.assertIn(remote_mac, self.get_status())
if status != "":
self.assertIn(remote_mac, output)
self.assertIn(filter_mode, output)
elif filter_mode == "dst":
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} ether -m {filter_mode} {local_mac} {status} {verbose}")
self.assertIn(local_mac, self.get_status())
if status != "":
self.assertIn(local_mac, output)
self.assertIn(filter_mode, output)
# check return code
self.assertEqual(rc, 0)
# In allow policy, all unmatched packets will pass and the matched packets will be droped
# In deny policy, all unmatched packets will be droped and the matched packets will pass
if policy == "allow":
self.assertFalse(utils.ping_from_remote("ipv4", 3))
elif policy == "deny":
self.assertTrue(utils.ping_from_remote("ipv4", 3))
# Test clear rules
if filter_mode == "src":
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} ether -r -m {filter_mode} {remote_mac} {status} {verbose}")
self.assertNotIn(remote_mac, self.get_status())
elif filter_mode == "dst":
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} ether -r -m {filter_mode} {local_mac} {status} {verbose}")
self.assertNotIn(local_mac, self.get_status())
self.assertNotIn(filter_mode, self.get_status())
self.assertEqual(rc, 0)
utils.run_cmd_local(f"{XDP_FILTER} unload {HOST_IFNAME}", wait_time=3)
def xdp_filter_case4_port(self):
DEFAULT_TIER['tier1']['status'] = [""]
DEFAULT_TIER['tier2']['status'] = ["", "--status"]
for status in DEFAULT_TIER[TIER]['status']:
for verbose in DEFAULT_TIER[TIER]['verbose']:
for policy in ['allow', 'deny']:
for mode in TEST_MODE:
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} load -p {policy} -m {mode} {HOST_IFNAME} {verbose}")
self.assertEqual(rc, 0, err)
for filter_mode in ["src", "dst"]:
for l3_proto in ["ipv4", "ipv6"]:
for l4_proto in ["tcp", "udp"]:
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} port -m {filter_mode} -p {l4_proto} {TEST_L4_PORT} {status} {verbose}")
self.assertIn(TEST_L4_PORT, self.get_status())
self.assertIn(filter_mode, self.get_status())
self.assertEqual(rc, 0)
if status != "":
self.assertIn(TEST_L4_PORT, output)
self.assertIn(filter_mode, output)
if policy == "allow":
if filter_mode == "src":
self.assertFalse(utils.test_port_from_remote(l3_proto, l4_proto, expect_err=True, use_source=True))
elif filter_mode == "dst":
self.assertFalse(utils.test_port_from_remote(l3_proto, l4_proto, expect_err=True))
elif policy == "deny":
if filter_mode == "src":
self.assertTrue(utils.test_port_from_remote(l3_proto, l4_proto, use_source=True))
elif filter_mode == "dst":
self.assertTrue(utils.test_port_from_remote(l3_proto, l4_proto))
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} port -r -m {filter_mode} -p {l4_proto} {TEST_L4_PORT} {status} {verbose}")
self.assertNotIn(TEST_L4_PORT, self.get_status())
self.assertEqual(rc, 0)
if status != "":
self.assertNotIn(TEST_L4_PORT, output)
self.assertNotIn(filter_mode, output)
utils.run_cmd_local(f"{XDP_FILTER} unload {HOST_IFNAME}", wait_time=5)
def xdp_filter_case5_poll(self):
# magic number 30 means interval time multiple 30s, otherwise, we may not get a valid output
interval_milsec = "2000"
timeout_time = int(interval_milsec)/1000 * 30
tier = {
"tier1": {
"interval": ["", "-i "+interval_milsec],
"verbose": [""]
},
"tier2": {
"interval": ["", "-i "+interval_milsec],
"verbose": ["", "-v"]
}
}
DEFAULT_TIER["tier1"]["interval"] = ["", f"-i {interval_milsec}"]
DEFAULT_TIER["tier2"]["interval"] = ["", f"-i {interval_milsec}"]
for interval in DEFAULT_TIER[TIER]['interval']:
for verbose in DEFAULT_TIER[TIER]['verbose']:
for policy in ["allow", "deny"]:
for mode in TEST_MODE:
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} load -p {policy} -m {mode} {HOST_IFNAME} {verbose}")
self.assertEqual(rc, 0, err)
if policy == "allow":
self.assertTrue(utils.ping_from_remote("ipv4"))
elif policy == "deny":
self.assertFalse(utils.ping_from_remote("ipv4"))
# need to use poll for at least 30s, otherwise there'll be no stdout to check
if interval != "":
err, output, rc = utils.run_cmd_local(f"timeout {timeout_time} {XDP_FILTER} poll {interval} {verbose}", expect_err=True)
self.assertRegex(output, f"Period of {interval_milsec[0]}")
else:
err, output, rc = utils.run_cmd_local(f"timeout 30 {XDP_FILTER} poll {interval} {verbose}", expect_err=True)
if policy == "allow":
self.assertNotRegex(output, "XDP_PASS\\s+0 pkts")
self.assertRegex(output, "XDP_PASS\\s+\\d+ pkts")
elif policy == "deny":
self.assertNotRegex(output, "XDP_DROP\\s+0 pkts")
self.assertRegex(output, "XDP_DROP\\s+\\d+ pkts")
utils.run_cmd_local(f"{XDP_FILTER} unload {HOST_IFNAME}", wait_time=5)
def xdp_filter_case6_unload(self):
tier = {
"tier1": {
"keep-maps": ["-k"],
"verbose": [""]
},
"tier2": {
"keep-maps": ["-k"],
"verbose": ["", "-v"]
}
}
DEFAULT_TIER["tier1"]["keep-maps"] = ["-k"]
DEFAULT_TIER["tier2"]["keep-maps"] = ["-k"]
for verbose in DEFAULT_TIER[TIER]['verbose']:
for keep_maps in DEFAULT_TIER[TIER]['keep-maps']:
for policy in ['allow', 'deny']:
for mode in TEST_MODE:
for proto in ["ipv4", "ipv6"]:
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} load -p {policy} -m {mode} {HOST_IFNAME} {verbose}")
self.assertEqual(rc, 0, err)
utils.run_cmd_local(f"{XDP_FILTER} port {TEST_L4_PORT}")
utils.run_cmd_local(f"{XDP_FILTER} ip {CLIENT_ADDRESS[proto]}")
utils.run_cmd_local(f"{XDP_FILTER} ether {utils.get_remoteif_mac(REMOTE_IFNAME)}")
self.assertIn(TEST_L4_PORT, self.get_status())
self.assertIn(CLIENT_ADDRESS[proto], self.get_status())
self.assertIn(utils.get_remoteif_mac(REMOTE_IFNAME), self.get_status())
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} unload {keep_maps} {HOST_IFNAME}")
self.assertEqual(rc, 0)
if keep_maps != "":
self.assertNotIn(HOST_IFNAME, self.get_status())
self.assertIn(TEST_L4_PORT, self.get_status())
self.assertIn(CLIENT_ADDRESS[proto], self.get_status())
self.assertIn(utils.get_remoteif_mac(REMOTE_IFNAME), self.get_status())
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} load -p {policy} -m {mode} {HOST_IFNAME} {verbose}")
self.assertEqual(rc, 0, err)
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} unload -a")
self.assertEqual(rc, 0, err)
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} status", expect_err=True)
self.assertEqual(rc, 254)
def xdp_filter_case7_help(self):
sub_commands = ["load", "unload", "ip", "port", "ether", "poll"]
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} help", expect_err=True)
self.assertEqual(rc, 255)
self.assertIn("COMMAND", err)
for cmd in sub_commands:
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} {cmd} --help", expect_err=True)
self.assertEqual(rc, 1)
self.assertIn("Options", output)
def xdp_filter_case8_version(self):
sub_commands = ["load", "unload", "ip", "port", "ether", "poll"]
for cmd in sub_commands:
err, output, rc = utils.run_cmd_local(f"{XDP_FILTER} {cmd} --version")
self.assertIn("xdp-filter", output)
self.assertIn("libbpf", output)