def __init__(self, integ_br, root_helper, polling_interval):
super(NVSDNeutronAgent, self).__init__()
self.int_br = ovs_lib.OVSBridge(integ_br, root_helper)
self.polling_interval = polling_interval
self.root_helper = root_helper
self.setup_rpc()
self.ports = set()
def main():
"""Main method for cleaning up OVS bridges.
The utility cleans up the integration bridges used by Neutron.
"""
conf = setup_conf()
conf()
config.setup_logging()
configuration_bridges = set(
[conf.ovs_integration_bridge, conf.external_network_bridge])
ovs_bridges = set(ovs_lib.get_bridges(conf.AGENT.root_helper))
available_configuration_bridges = configuration_bridges & ovs_bridges
if conf.ovs_all_ports:
bridges = ovs_bridges
else:
bridges = available_configuration_bridges
# Collect existing ports created by Neutron on configuration bridges.
# After deleting ports from OVS bridges, we cannot determine which
# ports were created by Neutron, so port information is collected now.
ports = collect_neutron_ports(available_configuration_bridges,
conf.AGENT.root_helper)
for bridge in bridges:
LOG.info(_LI("Cleaning bridge: %s"), bridge)
ovs = ovs_lib.OVSBridge(bridge, conf.AGENT.root_helper)
ovs.delete_ports(all_ports=conf.ovs_all_ports)
# Remove remaining ports created by Neutron (usually veth pair)
delete_neutron_ports(ports, conf.AGENT.root_helper)
LOG.info(_LI("OVS cleanup completed successfully"))
def collect_neutron_ports(bridges, root_helper):
"""Collect ports created by Neutron from OVS."""
ports = []
for bridge in bridges:
ovs = ovs_lib.OVSBridge(bridge, root_helper)
ports += [port.port_name for port in ovs.get_vif_ports()]
return ports
def setup_ancillary_bridges(self, integ_br, tun_br):
'''Setup ancillary bridges - for example br-ex.'''
ovs_bridges = set(ovs_lib.get_bridges(self.root_helper))
# Remove all known bridges
ovs_bridges.remove(integ_br)
if self.enable_tunneling:
ovs_bridges.remove(tun_br)
br_names = [
self.phys_brs[physical_network].br_name
for physical_network in self.phys_brs
]
ovs_bridges.difference_update(br_names)
# Filter list of bridges to those that have external
# bridge-id's configured
br_names = []
for bridge in ovs_bridges:
id = ovs_lib.get_bridge_external_bridge_id(self.root_helper,
bridge)
if id != bridge:
br_names.append(bridge)
ovs_bridges.difference_update(br_names)
ancillary_bridges = []
for bridge in ovs_bridges:
br = ovs_lib.OVSBridge(bridge, self.root_helper)
LOG.info(_('Adding %s to list of bridges.'), bridge)
ancillary_bridges.append(br)
return ancillary_bridges
def __init__(self, integ_br, root_helper, polling_interval):
self.int_br = ovs_lib.OVSBridge(integ_br, root_helper)
self.polling_interval = polling_interval
self.root_helper = root_helper
self.setup_rpc()
self.ports = set()
def ofctl_arg_supported(root_helper, cmd, **kwargs):
"""Verify if ovs-ofctl binary supports cmd with **kwargs.
:param root_helper: utility to use when running shell commands.
:param cmd: ovs-ofctl command to use for test.
:param **kwargs: arguments to test with the command.
:returns: a boolean if the supplied arguments are supported.
"""
br_name = 'br-test-%s' % utils.get_random_string(6)
with ovs_lib.OVSBridge(br_name, root_helper) as test_br:
full_args = [
"ovs-ofctl", cmd, test_br.br_name,
ovs_lib._build_flow_expr_str(kwargs,
cmd.split('-')[0])
]
try:
agent_utils.execute(full_args, root_helper=root_helper)
except RuntimeError as e:
LOG.debug(
"Exception while checking supported feature via "
"command %s. Exception: %s", (full_args, e))
return False
except Exception:
LOG.exception(
_LE("Unexpected exception while checking supported"
" feature via command: %s"), full_args)
return False
else:
return True
def setUp(self):
super(OVS_Lib_Test, self).setUp()
self.BR_NAME = "br-int"
self.br = ovs_lib.OVSBridge(self.BR_NAME)
self.execute = mock.patch.object(
utils, "execute", spec=utils.execute).start()
def setup_integration_br(self, bridge_name, reset_br, out_of_band,
controller_ip=None):
'''Sets up the integration bridge.
Create the bridge and remove all existing flows if reset_br is True.
Otherwise, creates the bridge if not already existing.
:param bridge_name: the name of the integration bridge.
:param reset_br: A boolean to rest the bridge if True.
:param out_of_band: A boolean indicating controller is out of band.
:param controller_ip: IP address to use as the bridge controller.
:returns: the integration bridge
'''
int_br = ovs_lib.OVSBridge(bridge_name, self.root_helper)
if reset_br:
int_br.reset_bridge()
int_br.remove_all_flows()
else:
int_br.create()
# set the controller
if controller_ip:
int_br.run_vsctl(
["set-controller", bridge_name, "tcp:" + controller_ip])
if out_of_band:
int_br.set_db_attribute("controller", bridge_name,
"connection-mode", "out-of-band")
return int_br
def __init__(self, ):
self.conf = cfg.CONF
self.root_helper = cconfig.get_root_helper(self.conf)
self.external_br = ovs_lib.OVSBridge(EXTERNAL_BRIDGE, self.root_helper)
self.sync = True
self.ovs_restarted = False
self.ip_wrapper = ip_lib.IPWrapper(self.root_helper)
def patch_supported(root_helper):
seed = utils.get_random_string(6)
name = "patchtest-" + seed
peer_name = "peertest0-" + seed
patch_name = "peertest1-" + seed
with ovs_lib.OVSBridge(name, root_helper) as br:
port = br.add_patch_port(patch_name, peer_name)
return port != ovs_lib.INVALID_OFPORT
def setUp(self):
super(OVS_Lib_Test, self).setUp()
self.BR_NAME = "br-int"
self.TO = "--timeout=10"
self.root_helper = 'sudo'
self.br = ovs_lib.OVSBridge(self.BR_NAME, self.root_helper)
self.execute = mock.patch.object(utils, "execute",
spec=utils.execute).start()
def setUp(self):
super(OVS_Lib_Test, self).setUp()
self.BR_NAME = "br-int"
self.TO = "--timeout=2"
self.root_helper = 'sudo'
self.br = ovs_lib.OVSBridge(self.BR_NAME, self.root_helper)
self.execute = mock.patch.object(utils, "execute").start()
self.addCleanup(mock.patch.stopall)
def __init__(self, integ_br, polling_interval, root_helper, vs='ovs'):
super(RestProxyAgent, self).__init__()
self.polling_interval = polling_interval
self._setup_rpc()
self.sg_agent = SecurityGroupAgent(self.context, self.plugin_rpc,
root_helper)
if vs == 'ivs':
self.int_br = IVSBridge(integ_br, root_helper)
else:
self.int_br = ovs_lib.OVSBridge(integ_br, root_helper)
def setUp(self):
super(OVS_Lib_Test, self).setUp()
self.BR_NAME = "br-int"
self.TO = "--timeout=2"
self.mox = mox.Mox()
self.root_helper = 'sudo'
self.br = ovs_lib.OVSBridge(self.BR_NAME, self.root_helper)
self.mox.StubOutWithMock(utils, "execute")
self.addCleanup(self.mox.UnsetStubs)
def test_bridge_lifecycle_ovsbridge(self):
name = base.get_rand_name(prefix=base.BR_PREFIX)
br = ovs_lib.OVSBridge(name)
self.assertEqual(br.br_name, name)
# Make sure that instantiating an OVSBridge does not actually create
self.assertFalse(self.ovs.bridge_exists(name))
self.addCleanup(self.ovs.delete_bridge, name)
br.create()
self.assertTrue(self.ovs.bridge_exists(name))
br.destroy()
self.assertFalse(self.ovs.bridge_exists(name))
def unplug_device(conf, device):
try:
device.link.delete()
except RuntimeError:
root_helper = agent_config.get_root_helper(conf)
# Maybe the device is OVS port, so try to delete
bridge_name = ovs_lib.get_bridge_for_iface(root_helper, device.name)
if bridge_name:
bridge = ovs_lib.OVSBridge(bridge_name, root_helper)
bridge.delete_port(device.name)
else:
LOG.debug(_('Unable to find bridge for device: %s'), device.name)
def unplug_device(conf, device):
try:
device.link.delete()
except RuntimeError:
# Maybe the device is OVS port, so try to delete
ovs = ovs_lib.BaseOVS()
bridge_name = ovs.get_bridge_for_iface(device.name)
if bridge_name:
bridge = ovs_lib.OVSBridge(bridge_name)
bridge.delete_port(device.name)
else:
LOG.debug('Unable to find bridge for device: %s', device.name)
def _ovs_add_port(self,
bridge,
device_name,
port_id,
mac_address,
internal=True):
attrs = [('external-ids:iface-id', port_id),
('external-ids:iface-status', 'active'),
('external-ids:attached-mac', mac_address)]
if internal:
attrs.insert(0, ('type', 'internal'))
ovs = ovs_lib.OVSBridge(bridge, self.root_helper)
ovs.replace_port(device_name, *attrs)
def setup_integration_br(self, bridge_name):
'''Setup the integration bridge.
Create patch ports and remove all existing flows.
:param bridge_name: the name of the integration bridge.
:returns: the integration bridge
'''
int_br = ovs_lib.OVSBridge(bridge_name, self.root_helper)
int_br.delete_port(cfg.CONF.OVS.int_peer_patch_port)
int_br.remove_all_flows()
# switch all traffic using L2 learning
int_br.add_flow(priority=1, actions="normal")
return int_br
def _ovs_add_port(self,
bridge,
device_name,
port_id,
mac_address,
internal=True):
attrs = [('external_ids', {
'iface-id': port_id,
'iface-status': 'active',
'attached-mac': mac_address
})]
if internal:
attrs.insert(0, ('type', 'internal'))
ovs = ovs_lib.OVSBridge(bridge)
ovs.replace_port(device_name, *attrs)
def __init__(self):
self.bus = None
self.cached_topology = {}
self.providers = []
try:
bridge_mappings = q_utils.parse_mappings(
cfg.CONF.OVS.bridge_mappings)
except ValueError as e:
raise ValueError(_("Parsing bridge_mappings failed: %s.") % e)
self.integ_br = cfg.CONF.OVS.integration_bridge
self.bridge_mappings = bridge_mappings
self.root_helper = cfg.CONF.AGENT.root_helper
self.int_br = ovs_lib.OVSBridge(self.integ_br, self.root_helper)
def unplug(self, device_name, bridge=None, namespace=None, prefix=None):
"""Unplug the interface."""
if not bridge:
bridge = self.conf.ovs_integration_bridge
tap_name = self._get_tap_name(device_name, prefix)
self.check_bridge_exists(bridge)
ovs = ovs_lib.OVSBridge(bridge)
try:
ovs.delete_port(tap_name)
if self.conf.ovs_use_veth:
device = ip_lib.IPDevice(device_name, namespace=namespace)
device.link.delete()
LOG.debug("Unplugged interface '%s'", device_name)
except RuntimeError:
LOG.error(_LE("Failed unplugging interface '%s'"), device_name)
def test_update_ports_returns_changed_vlan(self):
br = ovs_lib.OVSBridge('br-int', 'sudo')
mac = "ca:fe:de:ad:be:ef"
port = ovs_lib.VifPort(1, 1, 1, mac, br)
lvm = ovs_neutron_agent.LocalVLANMapping(
1, '1', None, 1, {port.vif_id: port})
local_vlan_map = {'1': lvm}
vif_port_set = set([1, 3])
registered_ports = set([1, 2])
port_tags_dict = {1: []}
expected = dict(
added=set([3]), current=vif_port_set,
removed=set([2]), updated=set([1])
)
with mock.patch.dict(self.agent.local_vlan_map, local_vlan_map):
actual = self.mock_scan_ports(
vif_port_set, registered_ports, port_tags_dict=port_tags_dict)
self.assertEqual(expected, actual)
def _init_arping_port(self, physical_network, interface):
bridge = self.bridge_mappings.get(physical_network)
if not bridge:
LOG.error(
_("physical_network: %(physical_network)s "
"in not in bridge_mappings: (bridge_mappings)s"), {
'physical_network': physical_network,
'bridge_mappings': self.bridge_mappings
})
br = ovs_lib.OVSBridge(bridge, self.root_helper)
port_name = ARPING_PORT_PREFIX + physical_network
arping_port = br.add_port_for_bus(port_name)
interface_port = br.get_port_ofport(interface)
actions = "output:%s" % interface_port
br.add_flow(priority=101,
dl_type="0x0806",
in_port=arping_port,
actions=actions)
def __init__(self, integ_br, root_helper, polling_interval):
'''Constructor.
:param integ_br: name of the integration bridge.
:param root_helper: utility to use when running shell cmds.
:param polling_interval: interval (secs) to check the bridge.
'''
self.int_br = ovs_lib.OVSBridge(integ_br, root_helper)
self.polling_interval = polling_interval
self.cur_ports = []
self.datapath_id = "0x%s" % self.int_br.get_datapath_id()
self.agent_state = {
'binary': 'neutron-nec-agent',
'host': config.CONF.host,
'topic': q_const.L2_AGENT_TOPIC,
'configurations': {},
'agent_type': q_const.AGENT_TYPE_NEC,
'start_flag': True}
self.setup_rpc()
def setup_tunnel_br(self, tun_br):
'''Setup the tunnel bridge.
Creates tunnel bridge, and links it to the integration bridge
using a patch port.
:param tun_br: the name of the tunnel bridge.
'''
self.tun_br = ovs_lib.OVSBridge(tun_br, self.root_helper)
self.tun_br.reset_bridge()
self.patch_tun_ofport = self.int_br.add_patch_port(
cfg.CONF.OVS.int_peer_patch_port, cfg.CONF.OVS.tun_peer_patch_port)
self.patch_int_ofport = self.tun_br.add_patch_port(
cfg.CONF.OVS.tun_peer_patch_port, cfg.CONF.OVS.int_peer_patch_port)
if int(self.patch_tun_ofport) < 0 or int(self.patch_int_ofport) < 0:
LOG.error(
_("Failed to create OVS patch port. Cannot have "
"tunneling enabled on this agent, since this version "
"of OVS does not support tunnels or patch ports. "
"Agent terminated!"))
exit(1)
self.tun_br.remove_all_flows()
self.tun_br.add_flow(priority=1, actions="drop")
def assert_ovs_bridge_empty(bridge_name):
bridge = ovs_lib.OVSBridge(bridge_name)
self.assertFalse(bridge.get_port_name_list())
def vxlan_supported(root_helper, from_ip='192.0.2.1', to_ip='192.0.2.2'):
name = "vxlantest-" + utils.get_random_string(6)
with ovs_lib.OVSBridge(name, root_helper) as br:
port = br.add_tunnel_port(from_ip, to_ip, const.TYPE_VXLAN)
return port != ovs_lib.INVALID_OFPORT
def setUp(self):
super(TunnelTest, self).setUp()
cfg.CONF.set_override('rpc_backend',
'neutron.openstack.common.rpc.impl_fake')
cfg.CONF.set_override('report_interval', 0, 'AGENT')
self.mox = mox.Mox()
self.addCleanup(self.mox.UnsetStubs)
self.INT_BRIDGE = 'integration_bridge'
self.TUN_BRIDGE = 'tunnel_bridge'
self.MAP_TUN_BRIDGE = 'tunnel_bridge_mapping'
self.NET_MAPPING = {'net1': self.MAP_TUN_BRIDGE}
self.INT_OFPORT = 11111
self.TUN_OFPORT = 22222
self.MAP_TUN_OFPORT = 33333
self.VETH_MTU = None
self.inta = self.mox.CreateMock(ip_lib.IPDevice)
self.intb = self.mox.CreateMock(ip_lib.IPDevice)
self.inta.link = self.mox.CreateMock(ip_lib.IpLinkCommand)
self.intb.link = self.mox.CreateMock(ip_lib.IpLinkCommand)
self.mox.StubOutClassWithMocks(ovs_lib, 'OVSBridge')
self.mock_int_bridge = ovs_lib.OVSBridge(self.INT_BRIDGE, 'sudo')
self.mock_int_bridge.get_local_port_mac().AndReturn('000000000001')
self.mock_int_bridge.delete_port('patch-tun')
self.mock_int_bridge.remove_all_flows()
self.mock_int_bridge.add_flow(priority=1, actions='normal')
self.mock_map_tun_bridge = ovs_lib.OVSBridge(self.MAP_TUN_BRIDGE,
'sudo')
self.mock_map_tun_bridge.br_name = self.MAP_TUN_BRIDGE
self.mock_map_tun_bridge.remove_all_flows()
self.mock_map_tun_bridge.add_flow(priority=1, actions='normal')
self.mock_int_bridge.delete_port('int-tunnel_bridge_mapping')
self.mock_map_tun_bridge.delete_port('phy-tunnel_bridge_mapping')
self.mock_int_bridge.add_port(self.inta)
self.mock_map_tun_bridge.add_port(self.intb)
self.inta.link.set_up()
self.intb.link.set_up()
self.mock_int_bridge.add_flow(priority=2, in_port=None, actions='drop')
self.mock_map_tun_bridge.add_flow(priority=2,
in_port=None,
actions='drop')
self.mock_tun_bridge = ovs_lib.OVSBridge(self.TUN_BRIDGE, 'sudo')
self.mock_tun_bridge.reset_bridge()
self.mock_int_bridge.add_patch_port(
'patch-tun', 'patch-int').AndReturn(self.TUN_OFPORT)
self.mock_tun_bridge.add_patch_port(
'patch-int', 'patch-tun').AndReturn(self.INT_OFPORT)
self.mock_tun_bridge.remove_all_flows()
self.mock_tun_bridge.add_flow(priority=1,
in_port=self.INT_OFPORT,
actions="resubmit(,%s)" %
constants.PATCH_LV_TO_TUN)
self.mock_tun_bridge.add_flow(priority=0, actions='drop')
self.mock_tun_bridge.add_flow(table=constants.PATCH_LV_TO_TUN,
dl_dst=UCAST_MAC,
actions="resubmit(,%s)" %
constants.UCAST_TO_TUN)
self.mock_tun_bridge.add_flow(table=constants.PATCH_LV_TO_TUN,
dl_dst=BCAST_MAC,
actions="resubmit(,%s)" %
constants.FLOOD_TO_TUN)
for tunnel_type in constants.TUNNEL_NETWORK_TYPES:
self.mock_tun_bridge.add_flow(
table=constants.TUN_TABLE[tunnel_type],
priority=0,
actions="drop")
learned_flow = ("table=%s,"
"priority=1,"
"hard_timeout=300,"
"NXM_OF_VLAN_TCI[0..11],"
"NXM_OF_ETH_DST[]=NXM_OF_ETH_SRC[],"
"load:0->NXM_OF_VLAN_TCI[],"
"load:NXM_NX_TUN_ID[]->NXM_NX_TUN_ID[],"
"output:NXM_OF_IN_PORT[]" % constants.UCAST_TO_TUN)
self.mock_tun_bridge.add_flow(table=constants.LEARN_FROM_TUN,
priority=1,
actions="learn(%s),output:%s" %
(learned_flow, self.INT_OFPORT))
self.mock_tun_bridge.add_flow(table=constants.UCAST_TO_TUN,
priority=0,
actions="resubmit(,%s)" %
constants.FLOOD_TO_TUN)
self.mock_tun_bridge.add_flow(table=constants.FLOOD_TO_TUN,
priority=0,
actions="drop")
self.mox.StubOutWithMock(ip_lib, 'device_exists')
ip_lib.device_exists('tunnel_bridge_mapping', 'sudo').AndReturn(True)
ip_lib.device_exists('int-tunnel_bridge_mapping',
'sudo').AndReturn(True)
self.mox.StubOutWithMock(ip_lib.IpLinkCommand, 'delete')
ip_lib.IPDevice('int-tunnel_bridge_mapping').link.delete()
self.mox.StubOutClassWithMocks(ip_lib, 'IPWrapper')
ip_lib.IPWrapper('sudo').add_veth(
'int-tunnel_bridge_mapping',
'phy-tunnel_bridge_mapping').AndReturn([self.inta, self.intb])
self.mox.StubOutWithMock(ovs_lib, 'get_bridges')
ovs_lib.get_bridges('sudo').AndReturn(
[self.INT_BRIDGE, self.TUN_BRIDGE, self.MAP_TUN_BRIDGE])
def get_ovs_bridge(self, br_name):
return ovs_lib.OVSBridge(br_name)
