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#!/usr/bin/env python
# SPDX-License-Identifier: ISC
#
# Copyright (c) 2023 by Carmine Scarpitta <cscarpit@cisco.com>
#
"""
test_srv6_sid_manager.py:
+---------+
| |
| RT1 |
| 1.1.1.1 |
| |
+---------+
|eth-sw1
|
|
|
+---------+ | +---------+
| | | | |
| RT2 |eth-sw1 | eth-sw1| RT3 |
| 2.2.2.2 +----------+----------+ 3.3.3.3 |
| | 10.0.1.0/24 | |
+---------+ +---------+
eth-rt4-1| |eth-rt4-2 eth-rt5-1| |eth-rt5-2
| | | |
10.0.2.0/24| |10.0.3.0/24 10.0.4.0/24| |10.0.5.0/24
| | | |
eth-rt2-1| |eth-rt2-2 eth-rt3-1| |eth-rt3-2
+---------+ +---------+
| | | |
| RT4 | 10.0.6.0/24 | RT5 |
| 4.4.4.4 +---------------------+ 5.5.5.5 |
| |eth-rt5 eth-rt4| |
+---------+ +---------+
eth-rt6| |eth-rt6
| |
10.0.7.0/24| |10.0.8.0/24
| +---------+ |
| | | |
| | RT6 | |
+----------+ 6.6.6.6 +-----------+
eth-rt4| |eth-rt5
+---------+
|eth-dst (.1)
|
|10.0.10.0/24
|
|eth-rt6 (.2)
+---------+
| |
| DST |
| 9.9.9.2 |
| |
+---------+
"""
import os
import re
import sys
import json
import functools
import pytest
CWD = os.path.dirname(os.path.realpath(__file__))
sys.path.append(os.path.join(CWD, "../"))
# pylint: disable=C0413
# Import topogen and topotest helpers
from lib import topotest
from lib.topogen import Topogen, TopoRouter, get_topogen
from lib.topolog import logger
from lib.common_config import (
required_linux_kernel_version,
create_interface_in_kernel,
)
from lib.checkping import check_ping
pytestmark = [pytest.mark.isisd, pytest.mark.sharpd]
def build_topo(tgen):
"""Build function"""
# Define FRR Routers
tgen.add_router("rt1")
tgen.add_router("rt2")
tgen.add_router("rt3")
tgen.add_router("rt4")
tgen.add_router("rt5")
tgen.add_router("rt6")
tgen.add_router("dst")
tgen.add_router("ce1")
tgen.add_router("ce2")
tgen.add_router("ce3")
tgen.add_router("ce4")
tgen.add_router("ce5")
tgen.add_router("ce6")
# Define connections
switch = tgen.add_switch("s1")
switch.add_link(tgen.gears["rt1"], nodeif="eth-sw1")
switch.add_link(tgen.gears["rt2"], nodeif="eth-sw1")
switch.add_link(tgen.gears["rt3"], nodeif="eth-sw1")
switch = tgen.add_switch("s2")
switch.add_link(tgen.gears["rt2"], nodeif="eth-rt4-1")
switch.add_link(tgen.gears["rt4"], nodeif="eth-rt2-1")
switch = tgen.add_switch("s3")
switch.add_link(tgen.gears["rt2"], nodeif="eth-rt4-2")
switch.add_link(tgen.gears["rt4"], nodeif="eth-rt2-2")
switch = tgen.add_switch("s4")
switch.add_link(tgen.gears["rt3"], nodeif="eth-rt5-1")
switch.add_link(tgen.gears["rt5"], nodeif="eth-rt3-1")
switch = tgen.add_switch("s5")
switch.add_link(tgen.gears["rt3"], nodeif="eth-rt5-2")
switch.add_link(tgen.gears["rt5"], nodeif="eth-rt3-2")
switch = tgen.add_switch("s6")
switch.add_link(tgen.gears["rt4"], nodeif="eth-rt5")
switch.add_link(tgen.gears["rt5"], nodeif="eth-rt4")
switch = tgen.add_switch("s7")
switch.add_link(tgen.gears["rt4"], nodeif="eth-rt6")
switch.add_link(tgen.gears["rt6"], nodeif="eth-rt4")
switch = tgen.add_switch("s8")
switch.add_link(tgen.gears["rt5"], nodeif="eth-rt6")
switch.add_link(tgen.gears["rt6"], nodeif="eth-rt5")
switch = tgen.add_switch("s9")
switch.add_link(tgen.gears["rt6"], nodeif="eth-dst")
switch.add_link(tgen.gears["dst"], nodeif="eth-rt6")
tgen.add_link(tgen.gears["ce1"], tgen.gears["rt1"], "eth-rt1", "eth-ce1")
tgen.add_link(tgen.gears["ce2"], tgen.gears["rt6"], "eth-rt6", "eth-ce2")
tgen.add_link(tgen.gears["ce3"], tgen.gears["rt1"], "eth-rt1", "eth-ce3")
tgen.add_link(tgen.gears["ce4"], tgen.gears["rt6"], "eth-rt6", "eth-ce4")
tgen.add_link(tgen.gears["ce5"], tgen.gears["rt1"], "eth-rt1", "eth-ce5")
tgen.add_link(tgen.gears["ce6"], tgen.gears["rt6"], "eth-rt6", "eth-ce6")
tgen.gears["rt1"].run("ip link add vrf10 type vrf table 10")
tgen.gears["rt1"].run("ip link set vrf10 up")
tgen.gears["rt1"].run("ip link add vrf20 type vrf table 20")
tgen.gears["rt1"].run("ip link set vrf20 up")
tgen.gears["rt1"].run("ip link set eth-ce1 master vrf10")
tgen.gears["rt1"].run("ip link set eth-ce3 master vrf10")
tgen.gears["rt1"].run("ip link set eth-ce5 master vrf20")
tgen.gears["rt6"].run("ip link add vrf10 type vrf table 10")
tgen.gears["rt6"].run("ip link set vrf10 up")
tgen.gears["rt6"].run("ip link add vrf20 type vrf table 20")
tgen.gears["rt6"].run("ip link set vrf20 up")
tgen.gears["rt6"].run("ip link set eth-ce2 master vrf10")
tgen.gears["rt6"].run("ip link set eth-ce4 master vrf20")
tgen.gears["rt6"].run("ip link set eth-ce6 master vrf20")
# Add dummy interface for SRv6
create_interface_in_kernel(
tgen,
"rt1",
"sr0",
"2001:db8::1",
netmask="128",
create=True,
)
create_interface_in_kernel(
tgen,
"rt2",
"sr0",
"2001:db8::2",
netmask="128",
create=True,
)
create_interface_in_kernel(
tgen,
"rt3",
"sr0",
"2001:db8::3",
netmask="128",
create=True,
)
create_interface_in_kernel(
tgen,
"rt4",
"sr0",
"2001:db8::4",
netmask="128",
create=True,
)
create_interface_in_kernel(
tgen,
"rt5",
"sr0",
"2001:db8::5",
netmask="128",
create=True,
)
create_interface_in_kernel(
tgen,
"rt6",
"sr0",
"2001:db8::6",
netmask="128",
create=True,
)
def setup_module(mod):
"""Sets up the pytest environment"""
# Verify if kernel requirements are satisfied
result = required_linux_kernel_version("4.10")
if result is not True:
pytest.skip("Kernel requirements are not met")
# Build the topology
tgen = Topogen(build_topo, mod.__name__)
tgen.start_topology()
# For all registered routers, load the zebra and isis configuration files
for rname, router in tgen.routers().items():
router.load_config(TopoRouter.RD_ZEBRA,
os.path.join(CWD, '{}/zebra.conf'.format(rname)))
router.load_config(TopoRouter.RD_ISIS,
os.path.join(CWD, '{}/isisd.conf'.format(rname)))
router.load_config(TopoRouter.RD_BGP,
os.path.join(CWD, '{}/bgpd.conf'.format(rname)))
if (os.path.exists('{}/sharpd.conf'.format(rname))):
router.load_config(TopoRouter.RD_SHARP,
os.path.join(CWD, '{}/sharpd.conf'.format(rname)))
# Start routers
tgen.start_router()
def teardown_module(mod):
"Teardown the pytest environment"
# Teardown the topology
tgen = get_topogen()
tgen.stop_topology()
def router_compare_json_output(rname, command, reference):
"Compare router JSON output"
logger.info('Comparing router "%s" "%s" output', rname, command)
tgen = get_topogen()
filename = "{}/{}/{}".format(CWD, rname, reference)
expected = json.loads(open(filename).read())
# Run test function until we get an result. Wait at most 60 seconds.
test_func = functools.partial(topotest.router_json_cmp, tgen.gears[rname], command, expected)
_, diff = topotest.run_and_expect(test_func, None, count=120, wait=0.5)
assertmsg = '"{}" JSON output mismatches the expected result'.format(rname)
assert diff is None, assertmsg
def check_ping6(name, dest_addr, expect_connected):
def _check(name, dest_addr, match):
tgen = get_topogen()
output = tgen.gears[name].run("ping6 {} -c 1 -w 1".format(dest_addr))
logger.info(output)
if match not in output:
return "ping fail"
match = "{} packet loss".format("0%" if expect_connected else "100%")
logger.info("[+] check {} {} {}".format(name, dest_addr, match))
tgen = get_topogen()
func = functools.partial(_check, name, dest_addr, match)
success, result = topotest.run_and_expect(func, None, count=10, wait=1)
assert result is None, "Failed"
def open_json_file(filename):
try:
with open(filename, "r") as f:
return json.load(f)
except IOError:
assert False, "Could not read file {}".format(filename)
def check_rib(name, cmd, expected_file):
def _check(name, cmd, expected_file):
logger.info("polling")
tgen = get_topogen()
router = tgen.gears[name]
output = json.loads(router.vtysh_cmd(cmd))
expected = open_json_file("{}/{}".format(CWD, expected_file))
return topotest.json_cmp(output, expected)
logger.info('[+] check {} "{}" {}'.format(name, cmd, expected_file))
tgen = get_topogen()
func = functools.partial(_check, name, cmd, expected_file)
success, result = topotest.run_and_expect(func, None, count=10, wait=0.5)
assert result is None, "Failed"
#
# Step 1
#
# Test initial network convergence
#
def test_isis_adjacencies():
logger.info("Test: check IS-IS adjacencies")
tgen = get_topogen()
# Skip if previous fatal error condition is raised
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
for rname in ["rt1", "rt2", "rt3", "rt4", "rt5", "rt6"]:
router_compare_json_output(
rname,
"show yang operational-data /frr-interface:lib isisd",
"show_yang_interface_isis_adjacencies.ref",
)
def test_rib_ipv4():
logger.info("Test: verify IPv4 RIB")
tgen = get_topogen()
# Skip if previous fatal error condition is raised
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
for rname in ["rt1", "rt2", "rt3", "rt4", "rt5", "rt6"]:
router_compare_json_output(
rname, "show ip route isis json", "show_ip_route.ref"
)
def test_rib_ipv6():
logger.info("Test: verify IPv6 RIB")
tgen = get_topogen()
# Skip if previous fatal error condition is raised
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
for rname in ["rt1", "rt2", "rt3", "rt4", "rt5", "rt6"]:
router_compare_json_output(
rname, "show ipv6 route json", "show_ipv6_route.ref"
)
def test_srv6_locator():
logger.info("Test: verify SRv6 Locator")
tgen = get_topogen()
# Skip if previous fatal error condition is raised
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
for rname in ["rt1", "rt2", "rt3", "rt4", "rt5", "rt6"]:
router_compare_json_output(
rname, "show segment-routing srv6 locator json", "show_srv6_locator_table.ref"
)
def test_vpn_rib():
check_rib("rt1", "show bgp ipv6 vpn json", "rt1/vpnv6_rib.ref")
check_rib("rt6", "show bgp ipv6 vpn json", "rt6/vpnv6_rib.ref")
check_rib("rt1", "show ipv6 route vrf vrf10 json", "rt1/vrf10_rib.ref")
check_rib("rt1", "show ipv6 route vrf vrf20 json", "rt1/vrf20_rib.ref")
check_rib("rt6", "show ipv6 route vrf vrf10 json", "rt6/vrf10_rib.ref")
check_rib("rt6", "show ipv6 route vrf vrf20 json", "rt6/vrf20_rib.ref")
check_rib("ce1", "show ipv6 route json", "ce1/ipv6_rib.json")
check_rib("ce2", "show ipv6 route json", "ce2/ipv6_rib.json")
check_rib("ce3", "show ipv6 route json", "ce3/ipv6_rib.json")
check_rib("ce4", "show ipv6 route json", "ce4/ipv6_rib.json")
check_rib("ce5", "show ipv6 route json", "ce5/ipv6_rib.json")
check_rib("ce6", "show ipv6 route json", "ce6/ipv6_rib.json")
def test_ping():
logger.info("Test: verify ping")
tgen = get_topogen()
# Required linux kernel version for this suite to run.
result = required_linux_kernel_version("6.1")
if result is not True:
pytest.skip("Kernel requirements are not met, kernel version should be >=6.1")
# Skip if previous fatal error condition is raised
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
# Setup encap route on rt1, decap route on rt2
# tgen.gears["rt1"].vtysh_cmd("sharp install seg6-routes fc00:0:9::1 nexthop-seg6 2001:db8:1::2 encap fc00:0:2:6:fe00:: 1")
tgen.gears["rt1"].cmd("ip -6 r a fc00:0:9::1/128 encap seg6 mode encap segs fc00:0:2:6:fe00:: via 2001:db8:1::2")
# tgen.gears["rt6"].vtysh_cmd("sharp install seg6local-routes fc00:0:f00d:: nexthop-seg6local eth-dst End_DT6 254 1")
tgen.gears["rt6"].cmd("ip -6 r a fc00:0:9::1/128 via 2001:db8:10::2 vrf vrf10")
tgen.gears["dst"].cmd("ip -6 r a 2001:db8:1::1/128 via 2001:db8:10::1")
# Try to ping dst from rt1
check_ping("rt1", "fc00:0:9::1", True, 10, 1)
# Memory leak test template
def test_memory_leak():
"Run the memory leak test and report results."
tgen = get_topogen()
if not tgen.is_memleak_enabled():
pytest.skip("Memory leak test/report is disabled")
tgen.report_memory_leaks()
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))
|
