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python-ganttclient/nova/tests/test_libvirt_vif.py
Daniel P. Berrange c47a10aadb Add 'devname' to nova.network.model.VIF class 
Add a 'devname' field to nova.network.model.VIF to allow network
drivers to specify a desired TAP device name. Update the Quantum
driver to set a device name, and update the libvirt VIF drivers
to honour it.

Blueprint: libvirt-vif-driver
Change-Id: Ia8dd546af36e7f6c22efd7c696fb58b37aac0061
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
2013-01-15 09:56:23 +00:00

276 lines
9.1 KiB
Python
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
#
# Copyright 2012 Nicira, Inc
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
from lxml import etree
from nova.openstack.common import cfg
from nova import test
from nova import utils
from nova.virt.libvirt import config as vconfig
from nova.virt.libvirt import vif
CONF = cfg.CONF
class LibvirtVifTestCase(test.TestCase):
net = {
'cidr': '101.168.1.0/24',
'cidr_v6': '101:1db9::/64',
'gateway_v6': '101:1db9::1',
'netmask_v6': '64',
'netmask': '255.255.255.0',
'bridge': 'br0',
'bridge_interface': 'eth0',
'vlan': 99,
'gateway': '101.168.1.1',
'broadcast': '101.168.1.255',
'dns1': '8.8.8.8',
'id': 'network-id-xxx-yyy-zzz'
}
mapping = {
'mac': 'ca:fe:de:ad:be:ef',
'gateway_v6': net['gateway_v6'],
'ips': [{'ip': '101.168.1.9'}],
'dhcp_server': '191.168.1.1',
'vif_uuid': 'vif-xxx-yyy-zzz',
'vif_devname': 'tap-xxx-yyy-zzz'
}
instance = {
'name': 'instance-name',
'uuid': 'instance-uuid'
}
def setUp(self):
super(LibvirtVifTestCase, self).setUp()
self.flags(allow_same_net_traffic=True)
self.executes = []
def fake_execute(*cmd, **kwargs):
self.executes.append(cmd)
return None, None
self.stubs.Set(utils, 'execute', fake_execute)
def _get_instance_xml(self, driver):
conf = vconfig.LibvirtConfigGuest()
conf.virt_type = "qemu"
conf.name = "fake-name"
conf.uuid = "fake-uuid"
conf.memory = 100 * 1024
conf.vcpus = 4
nic = driver.get_config(self.instance, self.net, self.mapping)
conf.add_device(nic)
return conf.to_xml()
def test_multiple_nics(self):
conf = vconfig.LibvirtConfigGuest()
conf.virt_type = "qemu"
conf.name = "fake-name"
conf.uuid = "fake-uuid"
conf.memory = 100 * 1024
conf.vcpus = 4
# Tests multiple nic configuration and that target_dev is
# set for each
nics = [{'net_type': 'bridge',
'mac_addr': '00:00:00:00:00:0b',
'source_dev': 'b_source_dev',
'target_dev': 'b_target_dev'},
{'net_type': 'ethernet',
'mac_addr': '00:00:00:00:00:0e',
'source_dev': 'e_source_dev',
'target_dev': 'e_target_dev'},
{'net_type': 'direct',
'mac_addr': '00:00:00:00:00:0d',
'source_dev': 'd_source_dev',
'target_dev': 'd_target_dev'}]
for nic in nics:
nic_conf = vconfig.LibvirtConfigGuestInterface()
nic_conf.net_type = nic['net_type']
nic_conf.target_dev = nic['target_dev']
nic_conf.mac_addr = nic['mac_addr']
nic_conf.source_dev = nic['source_dev']
conf.add_device(nic_conf)
xml = conf.to_xml()
doc = etree.fromstring(xml)
for nic in nics:
path = "./devices/interface/[@type='%s']" % nic['net_type']
node = doc.find(path)
self.assertEqual(nic['net_type'], node.get("type"))
self.assertEqual(nic['mac_addr'],
node.find("mac").get("address"))
self.assertEqual(nic['target_dev'],
node.find("target").get("dev"))
def test_model_novirtio(self):
self.flags(libvirt_use_virtio_for_bridges=False,
libvirt_type='kvm')
d = vif.LibvirtBridgeDriver()
xml = self._get_instance_xml(d)
doc = etree.fromstring(xml)
ret = doc.findall('./devices/interface')
self.assertEqual(len(ret), 1)
node = ret[0]
ret = node.findall("model")
self.assertEqual(len(ret), 0)
ret = node.findall("driver")
self.assertEqual(len(ret), 0)
def test_model_kvm(self):
self.flags(libvirt_use_virtio_for_bridges=True,
libvirt_type='kvm')
d = vif.LibvirtBridgeDriver()
xml = self._get_instance_xml(d)
doc = etree.fromstring(xml)
ret = doc.findall('./devices/interface')
self.assertEqual(len(ret), 1)
node = ret[0]
model = node.find("model").get("type")
self.assertEqual(model, "virtio")
ret = node.findall("driver")
self.assertEqual(len(ret), 0)
def test_model_qemu(self):
self.flags(libvirt_use_virtio_for_bridges=True,
libvirt_type='qemu')
d = vif.LibvirtBridgeDriver()
xml = self._get_instance_xml(d)
doc = etree.fromstring(xml)
ret = doc.findall('./devices/interface')
self.assertEqual(len(ret), 1)
node = ret[0]
model = node.find("model").get("type")
self.assertEqual(model, "virtio")
driver = node.find("driver").get("name")
self.assertEqual(driver, "qemu")
def test_model_xen(self):
self.flags(libvirt_use_virtio_for_bridges=True,
libvirt_type='xen')
d = vif.LibvirtBridgeDriver()
xml = self._get_instance_xml(d)
doc = etree.fromstring(xml)
ret = doc.findall('./devices/interface')
self.assertEqual(len(ret), 1)
node = ret[0]
ret = node.findall("model")
self.assertEqual(len(ret), 0)
ret = node.findall("driver")
self.assertEqual(len(ret), 0)
def test_bridge_driver(self):
d = vif.LibvirtBridgeDriver()
xml = self._get_instance_xml(d)
doc = etree.fromstring(xml)
ret = doc.findall('./devices/interface')
self.assertEqual(len(ret), 1)
node = ret[0]
self.assertEqual(node.get("type"), "bridge")
br_name = node.find("source").get("bridge")
self.assertEqual(br_name, self.net['bridge'])
mac = node.find("mac").get("address")
self.assertEqual(mac, self.mapping['mac'])
def test_ovs_ethernet_driver(self):
d = vif.LibvirtOpenVswitchDriver()
xml = self._get_instance_xml(d)
doc = etree.fromstring(xml)
ret = doc.findall('./devices/interface')
self.assertEqual(len(ret), 1)
node = ret[0]
self.assertEqual(node.get("type"), "ethernet")
dev_name = node.find("target").get("dev")
self.assertTrue(dev_name.startswith("tap"))
mac = node.find("mac").get("address")
self.assertEqual(mac, self.mapping['mac'])
script = node.find("script").get("path")
self.assertEquals(script, "")
def test_ovs_virtualport_driver(self):
d = vif.LibvirtOpenVswitchVirtualPortDriver()
xml = self._get_instance_xml(d)
doc = etree.fromstring(xml)
ret = doc.findall('./devices/interface')
self.assertEqual(len(ret), 1)
node = ret[0]
self.assertEqual(node.get("type"), "bridge")
br_name = node.find("source").get("bridge")
self.assertEqual(br_name, "br0")
mac = node.find("mac").get("address")
self.assertEqual(mac, self.mapping['mac'])
vp = node.find("virtualport")
self.assertEqual(vp.get("type"), "openvswitch")
iface_id_found = False
for p_elem in vp.findall("parameters"):
iface_id = p_elem.get("interfaceid", None)
if iface_id:
self.assertEqual(iface_id, self.mapping['vif_uuid'])
iface_id_found = True
self.assertTrue(iface_id_found)
def test_quantum_bridge_ethernet_driver(self):
d = vif.QuantumLinuxBridgeVIFDriver()
xml = self._get_instance_xml(d)
doc = etree.fromstring(xml)
ret = doc.findall('./devices/interface')
self.assertEqual(len(ret), 1)
node = ret[0]
self.assertEqual(node.get("type"), "bridge")
dev_name = node.find("target").get("dev")
self.assertTrue(dev_name.startswith("tap"))
mac = node.find("mac").get("address")
self.assertEqual(mac, self.mapping['mac'])
br_name = node.find("source").get("bridge")
self.assertEqual(br_name, "br0")
def test_quantum_hybrid_driver(self):
d = vif.LibvirtHybridOVSBridgeDriver()
xml = self._get_instance_xml(d)
doc = etree.fromstring(xml)
ret = doc.findall('./devices/interface')
self.assertEqual(len(ret), 1)
node = ret[0]
self.assertEqual(node.get("type"), "bridge")
br_name = node.find("source").get("bridge")
self.assertEqual(br_name, self.net['bridge'])
mac = node.find("mac").get("address")
self.assertEqual(mac, self.mapping['mac'])
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