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tests: add new topotest to verify SRv6 locators

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This commit adds a new topotest to verify the functionality of SRv6
locators with custom bits length parameters.

Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
This commit is contained in:
Carmine Scarpitta 2022-07-23 18:30:03 +02:00
parent 3a94d672fc
commit 589c6e949e
17 changed files with 396 additions and 0 deletions
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0
tests/topotests/srv6_locator_custom_bits_length/__init__.py Normal file
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tests/topotests/srv6_locator_custom_bits_length/expected_chunks1.json Normal file
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[]

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tests/topotests/srv6_locator_custom_bits_length/expected_chunks2.json Normal file
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[
{
"name": "loc1",
"chunks": [
"2001:db8:1::/64"
]
}
]

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tests/topotests/srv6_locator_custom_bits_length/expected_chunks3.json Normal file
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[]

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tests/topotests/srv6_locator_custom_bits_length/expected_chunks4.json Normal file
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[
]

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tests/topotests/srv6_locator_custom_bits_length/expected_chunks5.json Normal file
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[
]

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tests/topotests/srv6_locator_custom_bits_length/expected_chunks6.json Normal file
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[
]

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tests/topotests/srv6_locator_custom_bits_length/expected_locators1.json Normal file
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{
"locators":[
{
"name": "loc1",
"prefix": "2001:db8:1::/64",
"blockBitsLength": 40,
"nodeBitsLength": 24,
"functionBitsLength": 16,
"argumentBitsLength": 0,
"statusUp": true,
"chunks": [
{
"prefix": "2001:db8:1::/64",
"proto": "system"
}
]
},
{
"name": "loc2",
"prefix": "2001:db8:2::/48",
"blockBitsLength": 24,
"nodeBitsLength": 24,
"functionBitsLength": 16,
"argumentBitsLength": 0,
"statusUp": true,
"chunks": [
{
"prefix": "2001:db8:2::/48",
"proto": "system"
}
]
}
]
}

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tests/topotests/srv6_locator_custom_bits_length/expected_locators2.json Normal file
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{
"locators":[
{
"name": "loc1",
"prefix": "2001:db8:1::/64",
"blockBitsLength": 40,
"nodeBitsLength": 24,
"functionBitsLength": 16,
"argumentBitsLength": 0,
"statusUp": true,
"chunks": [
{
"prefix": "2001:db8:1::/64",
"proto": "sharp"
}
]
},
{
"name": "loc2",
"prefix": "2001:db8:2::/48",
"blockBitsLength": 24,
"nodeBitsLength": 24,
"functionBitsLength": 16,
"argumentBitsLength": 0,
"statusUp": true,
"chunks": [
{
"prefix": "2001:db8:2::/48",
"proto": "system"
}
]
}
]
}

34
tests/topotests/srv6_locator_custom_bits_length/expected_locators3.json Normal file
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{
"locators":[
{
"name": "loc1",
"prefix": "2001:db8:1::/64",
"blockBitsLength": 40,
"nodeBitsLength": 24,
"functionBitsLength": 16,
"argumentBitsLength": 0,
"statusUp": true,
"chunks": [
{
"prefix": "2001:db8:1::/64",
"proto": "system"
}
]
},
{
"name": "loc2",
"prefix": "2001:db8:2::/48",
"blockBitsLength": 24,
"nodeBitsLength": 24,
"functionBitsLength": 16,
"argumentBitsLength": 0,
"statusUp": true,
"chunks": [
{
"prefix": "2001:db8:2::/48",
"proto": "system"
}
]
}
]
}

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tests/topotests/srv6_locator_custom_bits_length/expected_locators4.json Normal file
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{
"locators":[
{
"name": "loc1",
"prefix": "2001:db8:1::/64",
"blockBitsLength": 40,
"nodeBitsLength": 24,
"functionBitsLength": 16,
"argumentBitsLength": 0,
"statusUp": true,
"chunks": [
{
"prefix": "2001:db8:1::/64",
"proto": "system"
}
]
},
{
"name": "loc2",
"prefix": "2001:db8:2::/48",
"blockBitsLength": 24,
"nodeBitsLength": 24,
"functionBitsLength": 16,
"argumentBitsLength": 0,
"statusUp": true,
"chunks": [
{
"prefix": "2001:db8:2::/48",
"proto": "system"
}
]
},
{
"name": "loc3",
"prefix": "2001:db8:3::/48",
"blockBitsLength": 32,
"nodeBitsLength": 16,
"functionBitsLength": 16,
"argumentBitsLength": 0,
"statusUp": true,
"chunks": [
{
"prefix": "2001:db8:3::/48",
"proto": "system"
}
]
}
]
}

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tests/topotests/srv6_locator_custom_bits_length/expected_locators5.json Normal file
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{
"locators":[
{
"name": "loc2",
"prefix": "2001:db8:2::/48",
"blockBitsLength": 24,
"nodeBitsLength": 24,
"functionBitsLength": 16,
"argumentBitsLength": 0,
"statusUp": true,
"chunks": [
{
"prefix": "2001:db8:2::/48",
"proto": "system"
}
]
},
{
"name": "loc3",
"prefix": "2001:db8:3::/48",
"statusUp": true,
"blockBitsLength": 32,
"nodeBitsLength": 16,
"functionBitsLength": 16,
"argumentBitsLength": 0,
"chunks":[
{
"prefix": "2001:db8:3::/48",
"proto": "system"
}
]
}
]
}

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tests/topotests/srv6_locator_custom_bits_length/expected_locators6.json Normal file
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{
"locators":[
]
}

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tests/topotests/srv6_locator_custom_bits_length/r1/setup.sh Normal file
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ip link add dummy0 type dummy
ip link set dummy0 up

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tests/topotests/srv6_locator_custom_bits_length/r1/sharpd.conf Normal file
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hostname r1
!
log stdout notifications
log monitor notifications
log commands
log file sharpd.log debugging
!

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tests/topotests/srv6_locator_custom_bits_length/r1/zebra.conf Normal file
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hostname r1
!
! debug zebra events
! debug zebra rib detailed
!
log stdout notifications
log monitor notifications
log commands
log file zebra.log debugging
!
segment-routing
srv6
locators
locator loc1
prefix 2001:db8:1::/64
!
locator loc2
prefix 2001:db8:2::/48
!
!
!
!

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tests/topotests/srv6_locator_custom_bits_length/test_srv6_locator.py Executable file
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#!/usr/bin/env python
# Copyright (c) 2022, University of Rome Tor Vergata
# Authored by Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
#
# Permission to use, copy, modify, and/or distribute this software
# for any purpose with or without fee is hereby granted, provided
# that the above copyright notice and this permission notice appear
# in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
# OF THIS SOFTWARE.
#
"""
test_srv6_manager.py:
Test for SRv6 manager on zebra
"""
import os
import sys
import json
import pytest
import functools
CWD = os.path.dirname(os.path.realpath(__file__))
sys.path.append(os.path.join(CWD, "../"))
# pylint: disable=C0413
from lib import topotest
from lib.topogen import Topogen, TopoRouter, get_topogen
from lib.topolog import logger
pytestmark = [pytest.mark.bgpd, pytest.mark.sharpd]
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 setup_module(mod):
tgen = Topogen({None: "r1"}, mod.__name__)
tgen.start_topology()
for rname, router in tgen.routers().items():
router.run("/bin/bash {}/{}/setup.sh".format(CWD, rname))
router.load_config(
TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
)
router.load_config(
TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname))
)
router.load_config(
TopoRouter.RD_SHARP, os.path.join(CWD, "{}/sharpd.conf".format(rname))
)
tgen.start_router()
def teardown_module(mod):
tgen = get_topogen()
tgen.stop_topology()
def test_srv6():
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
router = tgen.gears["r1"]
def _check_srv6_locator(router, expected_locator_file):
logger.info("checking zebra locator status")
output = json.loads(router.vtysh_cmd("show segment-routing srv6 locator json"))
expected = open_json_file("{}/{}".format(CWD, expected_locator_file))
return topotest.json_cmp(output, expected)
def _check_sharpd_chunk(router, expected_chunk_file):
logger.info("checking sharpd locator chunk status")
output = json.loads(router.vtysh_cmd("show sharp segment-routing srv6 json"))
expected = open_json_file("{}/{}".format(CWD, expected_chunk_file))
return topotest.json_cmp(output, expected)
def check_srv6_locator(router, expected_file):
func = functools.partial(_check_srv6_locator, router, expected_file)
success, result = topotest.run_and_expect(func, None, count=5, wait=0.5)
assert result is None, "Failed"
def check_sharpd_chunk(router, expected_file):
func = functools.partial(_check_sharpd_chunk, router, expected_file)
success, result = topotest.run_and_expect(func, None, count=5, wait=0.5)
assert result is None, "Failed"
# FOR DEVELOPER:
# If you want to stop some specific line and start interactive shell,
# please use tgen.mininet_cli() to start it.
logger.info("Test1 for Locator Configuration")
check_srv6_locator(router, "expected_locators1.json")
check_sharpd_chunk(router, "expected_chunks1.json")
logger.info("Test2 get chunk for locator loc1")
router.vtysh_cmd("sharp srv6-manager get-locator-chunk loc1")
check_srv6_locator(router, "expected_locators2.json")
check_sharpd_chunk(router, "expected_chunks2.json")
logger.info("Test3 release chunk for locator loc1")
router.vtysh_cmd("sharp srv6-manager release-locator-chunk loc1")
check_srv6_locator(router, "expected_locators3.json")
check_sharpd_chunk(router, "expected_chunks3.json")
logger.info("Test4 additional locator loc3")
router.vtysh_cmd(
"""
configure terminal
segment-routing
srv6
locators
locator loc3
prefix 2001:db8:3::/48 func-bits 16 block-len 32 node-len 16
"""
)
check_srv6_locator(router, "expected_locators4.json")
check_sharpd_chunk(router, "expected_chunks4.json")
logger.info("Test5 delete locator and chunk is released automatically")
router.vtysh_cmd(
"""
configure terminal
segment-routing
srv6
locators
no locator loc1
"""
)
check_srv6_locator(router, "expected_locators5.json")
check_sharpd_chunk(router, "expected_chunks5.json")
logger.info("Test6 delete srv6 all configuration")
router.vtysh_cmd(
"""
configure terminal
segment-routing
no srv6
"""
)
check_srv6_locator(router, "expected_locators6.json")
check_sharpd_chunk(router, "expected_chunks6.json")
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))