def __init__(self, nr: int, tmp_dir: Path):
self.nr = nr
self.socket_dir = tmp_dir / f"vde{self.nr}.ctl"
# TODO: don't side-effect environment here
os.environ[f"QEMU_VDE_SOCKET_{self.nr}"] = str(self.socket_dir)
rootlog.info("start vlan")
pty_master, pty_slave = pty.openpty()
self.process = subprocess.Popen(
["vde_switch", "-s", self.socket_dir, "--dirmode", "0700"],
stdin=pty_slave,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
shell=False,
)
self.pid = self.process.pid
self.fd = os.fdopen(pty_master, "w")
self.fd.write("version\n")
# TODO: perl version checks if this can be read from
# an if not, dies. we could hang here forever. Fix it.
assert self.process.stdout is not None
self.process.stdout.readline()
if not (self.socket_dir / "ctl").exists():
rootlog.error("cannot start vde_switch")
rootlog.info(f"running vlan (pid {self.pid})")
def subtest(self, name: str) -> Iterator[None]:
"""Group logs under a given test name"""
with rootlog.nested(name):
try:
yield
return True
except Exception as e:
rootlog.error(f'Test "{name}" failed with error: "{e}"')
raise e
def __init__(self, nr: int, tmp_dir: Path):
self.nr = nr
self.socket_dir = tmp_dir / f"vde{self.nr}.ctl"
# TODO: don't side-effect environment here
os.environ[f"QEMU_VDE_SOCKET_{self.nr}"] = str(self.socket_dir)
rootlog.info("start vlan")
pty_master, pty_slave = pty.openpty()
# The --hub is required for the scenario determined by
# nixos/tests/networking.nix vlan-ping.
# VLAN Tagged traffic (802.1Q) seams to be blocked if a vde_switch is
# used without the hub mode (flood packets to all ports).
self.process = subprocess.Popen(
[
"vde_switch", "-s", self.socket_dir, "--dirmode", "0700",
"--hub"
],
stdin=pty_slave,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
shell=False,
)
self.pid = self.process.pid
self.fd = os.fdopen(pty_master, "w")
self.fd.write("version\n")
# TODO: perl version checks if this can be read from
# an if not, dies. we could hang here forever. Fix it.
assert self.process.stdout is not None
self.process.stdout.readline()
if not (self.socket_dir / "ctl").exists():
rootlog.error("cannot start vde_switch")
rootlog.info(f"running vlan (pid {self.pid}; ctl {self.socket_dir})")