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| | #! /usr/bin/env avocado-runner-avocado-classless
# SPDX-License-Identifier: GPL-2.0-or-later
#
# Copyright Red Hat
# Author: David Gibson <david@gibson.dropbear.id.au>
"""
Test A Simple Socket Transport
ndp.py - Helpers for testing NDP
"""
import contextlib
import ipaddress
import os
import tempfile
import exeter
from . import address, nstool
class NdpTestScenario:
def __init__(self, *, client, ifname, network, gateway):
self.client = client
self.ifname = ifname
self.network = network
self.gateway = gateway
def test_ndp_addr(setup):
with setup as scn:
# Wait for NDP to do its thing
(addr,) = scn.client.addr_wait(scn.ifname, family='inet6',
scope='global')
# The SLAAC address is derived from the guest ns MAC, so
# probably won't exactly match the host address (we need
# DHCPv6 for that). It should be in the right network though.
exeter.assert_eq(addr.network, scn.network)
def test_ndp_route(setup):
with setup as scn:
defroutes = scn.client.routes6(dst='default')
while not defroutes:
defroutes = scn.client.routes6(dst='default')
exeter.assert_eq(len(defroutes), 1)
gw = ipaddress.ip_address(defroutes[0]['gateway'])
exeter.assert_eq(gw, scn.gateway)
NDP_TESTS = [test_ndp_addr, test_ndp_route]
def ndp_tests(setup):
for t in NDP_TESTS:
testid = f'{setup.__qualname__}|{t.__qualname__}'
exeter.register_pipe(testid, setup, t)
IFNAME = 'clientif'
NETWORK = address.TEST_NET6_TASST_A
ipa = address.IpiAllocator(NETWORK)
(ROUTER_IP6,) = ipa.next_ipis()
@contextlib.contextmanager
def setup_radvd():
router_ifname = 'routerif'
with nstool.unshare_snh('client', '-Un') as client, \
nstool.unshare_snh('router', '-n',
parent=client, capable=True) as router:
with tempfile.TemporaryDirectory() as tmpdir:
client.veth(IFNAME, router_ifname, router)
# Configure the simulated router
confpath = os.path.join(tmpdir, 'radvd.conf')
pidfile = os.path.join(tmpdir, 'radvd.pid')
open(confpath, 'w', encoding='UTF-8').write(
f'''
interface {router_ifname} {{
AdvSendAdvert on;
prefix {NETWORK} {{
}};
}};
'''
)
router.ifup('lo')
router.ifup('routerif', ROUTER_IP6)
# Configure the client
client.ifup('lo')
client.ifup(IFNAME)
# Get the router's link-local-address
(router_ll,) = router.addr_wait(router_ifname,
family='inet6', scope='link')
# Run radvd
router.fg('radvd', '-c', '-C', f'{confpath}')
radvd_cmd = ['radvd', '-C', f'{confpath}', '-n',
'-p', f'{pidfile}', '-d', '5']
with router.bg(*radvd_cmd, capable=True) as radvd:
yield NdpTestScenario(client=client,
ifname=IFNAME,
network=NETWORK,
gateway=router_ll.ip)
radvd.terminate()
ndp_tests(setup_radvd)
|