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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
from avocado_classless.test import assert_eq, test_output
from tasst.address import IpiAllocator, TEST_NET6_TASST_A
from tasst.nstool import unshare_site
def test_ndp(ifname, network):
def dec(sitefn):
def test_ndp_addr(setup):
with setup as (site, _):
# Wait for NDP to do its thing
(addr,) = site.addr_wait(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.
assert_eq(addr.network, network)
def test_ndp_route(setup):
with setup as (site, gateway):
defroutes = site.routes6(dst='default')
while not defroutes:
defroutes = site.routes6(dst='default')
assert_eq(len(defroutes), 1)
gw = ipaddress.ip_address(defroutes[0]['gateway'])
assert_eq(gw, gateway)
return test_output(test_ndp_addr, test_ndp_route)(sitefn)
return dec
IFNAME = 'clientif'
NETWORK = TEST_NET6_TASST_A
ipa = IpiAllocator(NETWORK)
(ROUTER_IP6,) = ipa.next_ipis()
@test_ndp(IFNAME, NETWORK)
@contextlib.contextmanager
def setup_radvd():
router_ifname = 'routerif'
with unshare_site('client', '-Un') as client, \
unshare_site('router', '-n', parent=client, sudo=True) as router:
with tempfile.TemporaryDirectory() as tmpdir:
router.require_cmds('radvd')
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(f'radvd -c -C {confpath}')
radvd_cmd = f'radvd -C {confpath} -p {pidfile} -n -d 5'
with router.bg(radvd_cmd, sudo=True, pidfile=pidfile):
yield client, router_ll.ip
|