def test_get_devices_malformed_line(self):
self.execute.return_value = '\n'.join(LINK_SAMPLE + ['gibberish'])
retval = ip_lib.IPWrapper('sudo').get_devices()
self.assertEquals(retval,
[ip_lib.IPDevice('lo'),
ip_lib.IPDevice('eth0'),
ip_lib.IPDevice('br-int'),
ip_lib.IPDevice('gw-ddc717df-49')])
self.execute.assert_called_once_with('o', 'link', ('list',),
'sudo', None)
def _get_driver_by_device_name(self, device_name, namespace=None):
device = ip_lib.IPDevice(device_name, self.conf.root_helper, namespace)
mac_address = device.link.address
ports = self.quantum.list_ports(mac_address=mac_address)
if not 'ports' in ports or len(ports['ports']) < 1:
raise Exception('No port for this device %s' % device_name)
return self._get_driver_by_network_id(ports['ports'][0]['network_id'])
def init_l3(self, device_name, ip_cidrs, namespace=None):
"""Set the L3 settings for the interface using data from the port.
ip_cidrs: list of 'X.X.X.X/YY' strings
"""
device = ip_lib.IPDevice(device_name,
self.root_helper,
namespace=namespace)
previous = {}
for address in device.addr.list(scope='global', filters=['permanent']):
previous[address['cidr']] = address['ip_version']
# add new addresses
for ip_cidr in ip_cidrs:
net = netaddr.IPNetwork(ip_cidr)
if ip_cidr in previous:
del previous[ip_cidr]
continue
device.addr.add(net.version, ip_cidr, str(net.broadcast))
# clean up any old addresses
for ip_cidr, ip_version in previous.items():
device.addr.delete(ip_version, ip_cidr)
def unplug(self, device_name, bridge=None, namespace=None, prefix=None):
"""Unplug the interface."""
device = ip_lib.IPDevice(device_name, self.root_helper, namespace)
try:
device.link.delete()
LOG.debug(_("Unplugged interface '%s'"), device_name)
except RuntimeError:
LOG.error(_("Failed unplugging interface '%s'"), device_name)
def get_local_port_mac(self):
"""Retrieve the mac of the bridge's local port."""
address = ip_lib.IPDevice(self.br_name, self.root_helper).link.address
if address:
return address
else:
msg = _('Unable to determine mac address for %s') % self.br_name
raise Exception(msg)
def _get_device(self, network):
"""Return DHCP ip_lib device for this host on the network."""
device_id = self.get_device_id(network)
port = self.plugin.get_dhcp_port(network.id, device_id)
interface_name = self.get_interface_name(network, port)
namespace = NS_PREFIX + network.id
return ip_lib.IPDevice(interface_name,
self.root_helper,
namespace)
def setup_physical_bridges(self, bridge_mappings):
'''Setup the physical network bridges.
Creates physical network bridges and links them to the
integration bridge using veths.
:param bridge_mappings: map physical network names to bridge names.
'''
self.phys_brs = {}
self.int_ofports = {}
self.phys_ofports = {}
ip_wrapper = ip_lib.IPWrapper(self.root_helper)
for physical_network, bridge in bridge_mappings.iteritems():
LOG.info(
_("Mapping physical network %(physical_network)s to "
"bridge %(bridge)s"), {
'physical_network': physical_network,
'bridge': bridge
})
# setup physical bridge
if not ip_lib.device_exists(bridge, self.root_helper):
LOG.error(
_("Bridge %(bridge)s for physical network "
"%(physical_network)s does not exist. Agent "
"terminated!"), {
'physical_network': physical_network,
'bridge': bridge
})
sys.exit(1)
br = ovs_lib.OVSBridge(bridge, self.root_helper)
br.remove_all_flows()
br.add_flow(priority=1, actions="normal")
self.phys_brs[physical_network] = br
# create veth to patch physical bridge with integration bridge
int_veth_name = constants.VETH_INTEGRATION_PREFIX + bridge
self.int_br.delete_port(int_veth_name)
phys_veth_name = constants.VETH_PHYSICAL_PREFIX + bridge
br.delete_port(phys_veth_name)
if ip_lib.device_exists(int_veth_name, self.root_helper):
ip_lib.IPDevice(int_veth_name, self.root_helper).link.delete()
int_veth, phys_veth = ip_wrapper.add_veth(int_veth_name,
phys_veth_name)
self.int_ofports[physical_network] = self.int_br.add_port(int_veth)
self.phys_ofports[physical_network] = br.add_port(phys_veth)
# block all untranslated traffic over veth between bridges
self.int_br.add_flow(priority=2,
in_port=self.int_ofports[physical_network],
actions="drop")
br.add_flow(priority=2,
in_port=self.phys_ofports[physical_network],
actions="drop")
# enable veth to pass traffic
int_veth.link.set_up()
phys_veth.link.set_up()
def delete_quantum_ports(ports, root_helper):
"""Delete non-internal ports created by Quantum
Non-internal OVS ports need to be removed manually.
"""
for port in ports:
if ip_lib.device_exists(port):
device = ip_lib.IPDevice(port, root_helper)
device.link.delete()
LOG.info(_("Delete %s"), port)
def unplug(self, device_name, bridge=None, namespace=None, prefix=None):
"""Unplug the interface."""
tap_name = self._get_tap_name(device_name, prefix)
try:
cmd = ['ivs-ctl', 'del-port', tap_name]
utils.execute(cmd, self.root_helper)
device = ip_lib.IPDevice(device_name, self.root_helper, namespace)
device.link.delete()
LOG.debug(_("Unplugged interface '%s'"), device_name)
except RuntimeError:
LOG.error(_("Failed unplugging interface '%s'"), device_name)
def floating_ip_removed(self, ri, ex_gw_port, floating_ip, fixed_ip):
ip_cidr = str(floating_ip) + '/32'
net = netaddr.IPNetwork(ip_cidr)
interface_name = self.get_external_device_name(ex_gw_port['id'])
device = ip_lib.IPDevice(interface_name, self.conf.root_helper,
namespace=ri.ns_name())
device.addr.delete(net.version, ip_cidr)
for chain, rule in self.floating_forward_rules(floating_ip, fixed_ip):
ri.iptables_manager.ipv4['nat'].remove_rule(chain, rule)
ri.iptables_manager.apply()
def unplug(self, device_name, bridge=None, namespace=None):
"""Unplug the interface."""
device = ip_lib.IPDevice(device_name, self.conf.root_helper, namespace)
try:
device.link.delete()
LOG.debug(_("Unplugged interface '%s'") % device_name)
except RuntimeError:
LOG.error(_("Failed unplugging interface '%s'") %
device_name)
if namespace:
ip = ip_lib.IPWrapper(self.conf.root_helper, namespace)
ip.garbage_collect_namespace()
def floating_ip_added(self, ri, ex_gw_port, floating_ip, fixed_ip):
ip_cidr = str(floating_ip) + '/32'
interface_name = self.get_external_device_name(ex_gw_port['id'])
device = ip_lib.IPDevice(interface_name, self.conf.root_helper,
namespace=ri.ns_name())
if not ip_cidr in [addr['cidr'] for addr in device.addr.list()]:
net = netaddr.IPNetwork(ip_cidr)
device.addr.add(net.version, ip_cidr, str(net.broadcast))
self._send_gratuitous_arp_packet(ri, interface_name, floating_ip)
for chain, rule in self.floating_forward_rules(floating_ip, fixed_ip):
ri.iptables_manager.ipv4['nat'].add_rule(chain, rule)
ri.iptables_manager.apply()
def _make_subnet_interface_ip_map(self):
ip_dev = ip_lib.IPDevice(self.interface_name, self.root_helper,
self.namespace)
subnet_lookup = dict((netaddr.IPNetwork(subnet.cidr), subnet.id)
for subnet in self.network.subnets)
retval = {}
for addr in ip_dev.addr.list():
ip_net = netaddr.IPNetwork(addr['cidr'])
if ip_net in subnet_lookup:
retval[subnet_lookup[ip_net]] = addr['cidr'].split('/')[0]
return retval
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, self.conf.root_helper)
try:
ovs.delete_port(tap_name)
device = ip_lib.IPDevice(device_name, self.conf.root_helper,
namespace)
device.link.delete()
LOG.debug(_("Unplugged interface '%s'") % device_name)
except RuntimeError:
LOG.error(_("Failed unplugging interface '%s'") % device_name)
def setup(self, network, reuse_existing=False):
"""Create and initialize a device for network's DHCP on this host."""
device_id = self.get_device_id(network)
port = self.plugin.get_dhcp_port(network.id, device_id)
interface_name = self.get_interface_name(network, port)
if self.conf.use_namespaces:
namespace = NS_PREFIX + network.id
else:
namespace = None
if ip_lib.device_exists(interface_name,
self.conf.root_helper,
namespace):
if not reuse_existing:
raise exceptions.PreexistingDeviceFailure(
dev_name=interface_name)
LOG.debug(_('Reusing existing device: %s.') % interface_name)
else:
self.driver.plug(network.id,
port.id,
interface_name,
port.mac_address,
namespace=namespace)
ip_cidrs = []
for fixed_ip in port.fixed_ips:
subnet = fixed_ip.subnet
net = netaddr.IPNetwork(subnet.cidr)
ip_cidr = '%s/%s' % (fixed_ip.ip_address, net.prefixlen)
ip_cidrs.append(ip_cidr)
self.driver.init_l3(interface_name, ip_cidrs,
namespace=namespace)
# ensure that the dhcp interface is first in the list
if namespace is None:
device = ip_lib.IPDevice(interface_name, self.conf.root_helper)
device.route.pullup_route(interface_name)
return interface_name
def _get_device_plugin_tag(self, device_name, namespace=None):
device = ip_lib.IPDevice(device_name, self.conf.root_helper, namespace)
return device.link.alias
def _set_device_plugin_tag(self, network_id, device_name, namespace=None):
plugin_tag = self._get_flavor_by_network_id(network_id)
device = ip_lib.IPDevice(device_name, self.conf.root_helper, namespace)
device.link.set_alias(plugin_tag)
def test_str(self):
self.assertEqual(str(ip_lib.IPDevice('tap0')), 'tap0')
def test_eq_other_is_none(self):
dev1 = ip_lib.IPDevice('tap0', 'sudo', 'ns1')
self.assertNotEqual(dev1, None)
def setup(self, network, reuse_existing=False):
"""Create and initialize a device for network's DHCP on this host."""
device_id = self.get_device_id(network)
port = self.plugin.get_dhcp_port(network.id, device_id)
interface_name = self.get_interface_name(network, port)
if self.conf.use_namespaces:
namespace = NS_PREFIX + network.id
else:
namespace = None
if ip_lib.device_exists(interface_name,
self.root_helper,
namespace):
if not reuse_existing:
raise exceptions.PreexistingDeviceFailure(
dev_name=interface_name)
LOG.debug(_('Reusing existing device: %s.'), interface_name)
else:
self.driver.plug(network.id,
port.id,
interface_name,
port.mac_address,
namespace=namespace)
ip_cidrs = []
for fixed_ip in port.fixed_ips:
subnet = fixed_ip.subnet
net = netaddr.IPNetwork(subnet.cidr)
ip_cidr = '%s/%s' % (fixed_ip.ip_address, net.prefixlen)
ip_cidrs.append(ip_cidr)
if (self.conf.enable_isolated_metadata and
self.conf.use_namespaces):
ip_cidrs.append(METADATA_DEFAULT_IP)
self.driver.init_l3(interface_name, ip_cidrs,
namespace=namespace)
# ensure that the dhcp interface is first in the list
if namespace is None:
device = ip_lib.IPDevice(interface_name,
self.root_helper)
device.route.pullup_route(interface_name)
if self.conf.enable_metadata_network:
meta_cidr = netaddr.IPNetwork(METADATA_DEFAULT_IP)
metadata_subnets = [s for s in network.subnets if
netaddr.IPNetwork(s.cidr) in meta_cidr]
if metadata_subnets:
# Add a gateway so that packets can be routed back to VMs
device = ip_lib.IPDevice(interface_name,
self.root_helper,
namespace)
# Only 1 subnet on metadata access network
gateway_ip = metadata_subnets[0].gateway_ip
device.route.add_gateway(gateway_ip)
elif self.conf.use_namespaces:
self._set_default_route(network)
return interface_name
def test_eq_same_namespace(self):
dev1 = ip_lib.IPDevice('tap0', 'ns1')
dev2 = ip_lib.IPDevice('tap0', 'ns1')
self.assertEqual(dev1, dev2)
def test_eq_diff_name(self):
dev1 = ip_lib.IPDevice('tap0')
dev2 = ip_lib.IPDevice('tap1')
self.assertNotEqual(dev1, dev2)
def test_eq_diff_namespace(self):
dev1 = ip_lib.IPDevice('tap0', 'sudo', 'ns1')
dev2 = ip_lib.IPDevice('tap0', 'sudo', 'ns2')
self.assertNotEqual(dev1, dev2)
def setUp(self):
super(TunnelTest, self).setUp()
cfg.CONF.set_override('rpc_backend',
'quantum.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.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.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.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, 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.mock_int_bridge.get_local_port_mac().AndReturn('000000000001')
