def test_arp_protection_dead_reference_removal(self):
self._add_arp_protection(self.source, ['1.1.1.1'])
self._add_arp_protection(self.destination, ['2.2.2.2'])
no_arping(self.observer.namespace, self.destination.ip)
no_arping(self.observer.namespace, self.source.ip)
name = net_helpers.VethFixture.get_peer_name(self.source.port.name)
# This should remove all arp protect rules that aren't source port
arp_protect.delete_unreferenced_arp_protection([name])
no_arping(self.observer.namespace, self.source.ip)
arping(self.observer.namespace, self.destination.ip)
def scan_devices(self, previous, sync):
device_info = {}
# Save and reinitialize the set variable that the port_update RPC uses.
# This should be thread-safe as the greenthread should not yield
# between these two statements.
updated_devices = self.updated_devices
self.updated_devices = set()
current_devices = self.br_mgr.get_tap_devices()
device_info['current'] = current_devices
if previous is None:
# This is the first iteration of daemon_loop().
previous = {'added': set(),
'current': set(),
'updated': set(),
'removed': set()}
# clear any orphaned ARP spoofing rules (e.g. interface was
# manually deleted)
if self.prevent_arp_spoofing:
arp_protect.delete_unreferenced_arp_protection(current_devices)
if sync:
# This is the first iteration, or the previous one had a problem.
# Re-add all existing devices.
device_info['added'] = current_devices
# Retry cleaning devices that may not have been cleaned properly.
# And clean any that disappeared since the previous iteration.
device_info['removed'] = (previous['removed'] | previous['current']
- current_devices)
# Retry updating devices that may not have been updated properly.
# And any that were updated since the previous iteration.
# Only update devices that currently exist.
device_info['updated'] = (previous['updated'] | updated_devices
& current_devices)
else:
device_info['added'] = current_devices - previous['current']
device_info['removed'] = previous['current'] - current_devices
device_info['updated'] = updated_devices & current_devices
return device_info
def delete_unreferenced_arp_protection(self, current_devices):
arp_protect.delete_unreferenced_arp_protection(current_devices)
def delete_unreferenced_arp_protection(self, current_devices):
arp_protect.delete_unreferenced_arp_protection(current_devices)