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import pytest
from common import netns, process
import time
# This test module requires pppoe-discovery with -a and -t options
# Ubuntu 20.04 has not this option, Ubuntu 22.04 is ok
# Check that pppoe-discover supports -a and -t (to disable some tests required these features)
def support_pppoe_discovery_a_t():
try:
(_, out, err) = process.run(["pppoe-discovery", "-h"])
except: # can't run pppoe-discovery
return False
if "-t " in out + err and "-a " in out + err: # found -t and -a options
return True
else:
return False
# skip tests in this module if pppoe-discovery doesn't support '-a' and '-t' options
pytestmark = pytest.mark.skipif(
not support_pppoe_discovery_a_t(), reason="bad pppoe-discovery"
)
@pytest.fixture()
def accel_pppd_config(veth_pair_netns):
print(veth_pair_netns)
return (
"""
[modules]
pppoe
[log]
log-debug=/dev/stdout
level=5
[cli]
tcp=127.0.0.1:2001
[pppoe]
ac-name=test-accel
pado-delay=1500
interface="""
+ veth_pair_netns["veth_a"]
)
# test pado delay. accel-pppd is configured for 1.5s delay
# first step: test that pppoe-discovery fails if wait timeout=1<1.5
# second step: test that pppoe-discovery gets pado if wait timeout=2>1.5
def test_pppoe_pado_delay(accel_pppd_instance, veth_pair_netns):
# test that accel-pppd started successfully
assert accel_pppd_instance
# send two times with wait timeout = 1
(exit_sh_stat, out_sh_stat, err_sh_stat) = netns.exec(
veth_pair_netns["netns"],
["pppoe-discovery", "-a1", "-t1", "-I", veth_pair_netns["veth_b"]],
)
time.sleep(1) # sleep for one second (because accel-pppd replies in this timeslot)
(exit_sh_stat2, out_sh_stat2, err_sh_stat2) = netns.exec(
veth_pair_netns["netns"],
["pppoe-discovery", "-a1", "-t1", "-I", veth_pair_netns["veth_b"]],
)
time.sleep(1) # sleep for one second (because accel-pppd replies in this timeslot)
# print(out_sh_stat + err_sh_stat)
# print(out_sh_stat2 + err_sh_stat2)
# test that pppoe-discovery (wait timeout 1s) fails (as expected) (two times)
assert exit_sh_stat != 0 and "test-accel" not in out_sh_stat
assert exit_sh_stat2 != 0 and "test-accel" not in out_sh_stat2
(exit_sh_stat3, out_sh_stat3, err_sh_stat3) = netns.exec(
veth_pair_netns["netns"],
["pppoe-discovery", "-a1", "-t2", "-I", veth_pair_netns["veth_b"]],
)
# test that pppoe-discovery (wait timeout 2s) gets pado
assert exit_sh_stat3 == 0 and "test-accel" in out_sh_stat3
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