def _add_qdisc(self, direction):
if direction == constants.EGRESS_DIRECTION:
tc_lib.add_tc_qdisc(
self.name, 'htb', parent='root', namespace=self.namespace)
else:
tc_lib.add_tc_qdisc(
self.name, 'ingress', namespace=self.namespace)
def test_add_tc_qdisc_tbf(self):
tc_lib.add_tc_qdisc('device', 'tbf', parent='root', max_kbps=10000,
burst_kb=1500, latency_ms=70, kernel_hz=250,
namespace=self.namespace)
burst = tc_lib._get_tbf_burst_value(10000, 1500, 70) * 1024 / 8
self.mock_add_tc_qdisc.assert_called_once_with(
'device', parent=rtnl.TC_H_ROOT, kind='tbf', rate=10000 * 128,
burst=burst, latency=70000, namespace=self.namespace)
def test_add_tc_qdisc_tbf(self):
tc_lib.add_tc_qdisc('device', 'tbf', parent='root', max_kbps=10000,
burst_kb=1500, latency_ms=70, kernel_hz=250,
namespace=self.namespace)
burst = tc_lib._get_tbf_burst_value(10000, 1500, 70) * 1024 / 8
self.mock_add_tc_qdisc.assert_called_once_with(
'device', parent=rtnl.TC_H_ROOT, kind='tbf', rate=10000 * 128,
burst=burst, latency=70000, namespace=self.namespace)
def test_add_tc_policy_class_check_min_kbps_values(self):
def warning_args(rate, min_rate):
return ('TC HTB class policy rate %(rate)s (bytes/second) is '
'lower than the minimum accepted %(min_rate)s '
'(bytes/second), for device %(device)s, qdisc '
'%(qdisc)s and classid %(classid)s', {
'rate': rate,
'min_rate': min_rate,
'classid': '1:10',
'device': self.device[0],
'qdisc': '1:'
})
self._create_two_namespaces()
tc_lib.add_tc_qdisc(self.device[0],
'htb',
parent='root',
handle='1:',
namespace=self.ns[0])
with mock.patch.object(tc_lib, 'LOG') as mock_log:
# rate > min_rate: OK
tc_lib.add_tc_policy_class(self.device[0],
'1:',
'1:10',
max_kbps=2000,
burst_kb=1000,
min_kbps=4,
namespace=self.ns[0])
mock_log.warning.assert_not_called()
# rate < min_rate: min_rate = 466 with burst = 128000
tc_lib.add_tc_policy_class(self.device[0],
'1:',
'1:10',
max_kbps=2000,
burst_kb=1000,
min_kbps=3,
namespace=self.ns[0])
mock_log.warning.assert_called_once_with(
*warning_args(3 * 125, tc_lib._calc_min_rate(1000 * 125)))
# rate < min_rate: min_rate = 455 with burst = 0.8 ceil = 256000
mock_log.reset_mock()
tc_lib.add_tc_policy_class(self.device[0],
'1:',
'1:10',
max_kbps=2000,
burst_kb=None,
min_kbps=5,
namespace=self.ns[0])
min_rate = tc_lib._calc_min_rate(qos_consts.DEFAULT_BURST_RATE *
2000 * 125)
mock_log.warning.assert_called_once_with(
*warning_args(5 * 125, min_rate))
def test_list_tc_policy_class_retrieve_statistics(self):
statistics = {
'bytes', 'packets', 'drop', 'overlimits', 'bps', 'pps', 'qlen',
'backlog'
}
self._create_two_namespaces()
tc_lib.add_tc_qdisc(self.device[0],
'htb',
parent='root',
handle='1:',
namespace=self.ns[0])
tc_lib.add_tc_policy_class(self.device[0],
'1:',
'1:10',
max_kbps=1000,
burst_kb=900,
min_kbps=500,
namespace=self.ns[0])
tc_lib.add_tc_filter_match_mac(self.device[0],
'1:',
'1:10',
self.mac[1],
namespace=self.ns[0])
tc_classes = tc_lib.list_tc_policy_class(self.device[0],
namespace=self.ns[0])
self.assertEqual(1, len(tc_classes))
self.assertEqual(statistics, set(tc_classes[0]['stats']))
bytes = tc_classes[0]['stats']['bytes']
packets = tc_classes[0]['stats']['packets']
net_helpers.assert_ping(self.ns[1],
str(netaddr.IPNetwork(self.ip[0]).ip),
count=1)
tc_classes = tc_lib.list_tc_policy_class(self.device[0],
namespace=self.ns[0])
self.assertGreater(tc_classes[0]['stats']['bytes'], bytes)
self.assertGreater(tc_classes[0]['stats']['packets'], packets)
def test_add_tc_qdisc_htb(self):
tc_lib.add_tc_qdisc('device',
'htb',
parent='root',
handle='1:',
namespace=self.namespace)
self.mock_add_tc_qdisc.assert_called_once_with(
'device',
parent=rtnl.TC_H_ROOT,
kind='htb',
handle='1:0',
namespace=self.namespace)
self.mock_add_tc_qdisc.reset_mock()
tc_lib.add_tc_qdisc('device',
'htb',
parent='root',
handle='2',
namespace=self.namespace)
self.mock_add_tc_qdisc.assert_called_once_with(
'device',
parent=rtnl.TC_H_ROOT,
kind='htb',
handle='2:0',
namespace=self.namespace)
self.mock_add_tc_qdisc.reset_mock()
tc_lib.add_tc_qdisc('device',
'htb',
parent='root',
handle='3:12',
namespace=self.namespace)
self.mock_add_tc_qdisc.assert_called_once_with(
'device',
parent=rtnl.TC_H_ROOT,
kind='htb',
handle='3:0',
namespace=self.namespace)
self.mock_add_tc_qdisc.reset_mock()
tc_lib.add_tc_qdisc('device',
'htb',
parent='root',
handle=4,
namespace=self.namespace)
self.mock_add_tc_qdisc.assert_called_once_with(
'device',
parent=rtnl.TC_H_ROOT,
kind='htb',
handle='4:0',
namespace=self.namespace)
self.mock_add_tc_qdisc.reset_mock()
tc_lib.add_tc_qdisc('device',
'htb',
parent='root',
namespace=self.namespace)
self.mock_add_tc_qdisc.assert_called_once_with(
'device',
parent=rtnl.TC_H_ROOT,
kind='htb',
namespace=self.namespace)
self.mock_add_tc_qdisc.reset_mock()
tc_lib.add_tc_qdisc('device', 'htb', parent='root', handle=5)
self.mock_add_tc_qdisc.assert_called_once_with('device',
parent=rtnl.TC_H_ROOT,
kind='htb',
handle='5:0',
namespace=None)
self.mock_add_tc_qdisc.reset_mock()
def test_add_tc_filter_vxlan(self):
# The traffic control is applied on the veth pair device of the first
# namespace (self.ns[0]). The traffic created from the VXLAN interface
# when replying to the ping (sent from the other namespace), is
# encapsulated in a VXLAN frame and goes through the veth pair
# interface.
self._create_two_namespaces_connected_using_vxlan()
tc_lib.add_tc_qdisc(self.device[0],
'htb',
parent='root',
handle='1:',
namespace=self.ns[0])
classes = tc_lib.list_tc_policy_class(self.device[0],
namespace=self.ns[0])
self.assertEqual(0, len(classes))
class_ids = []
for i in range(1, 10):
class_id = '1:%s' % i
class_ids.append(class_id)
tc_lib.add_tc_policy_class(self.device[0],
'1:',
class_id,
namespace=self.ns[0],
min_kbps=1000,
max_kbps=2000,
burst_kb=1600)
# Add a filter for a randomly chosen created class, in the first
# namespace veth pair device, with the VXLAN MAC address. The traffic
# from the VXLAN device must go through this chosen class.
chosen_class_id = random.choice(class_ids)
tc_lib.add_tc_filter_vxlan(self.device[0],
'1:',
chosen_class_id,
self.mac_vxlan[0],
self.vxlan_id,
namespace=self.ns[0])
tc_classes = tc_lib.list_tc_policy_class(self.device[0],
namespace=self.ns[0])
for tc_class in (c for c in tc_classes
if c['classid'] == chosen_class_id):
bytes = tc_class['stats']['bytes']
packets = tc_class['stats']['packets']
break
else:
self.fail('TC class %(class_id)s is not present in the device '
'%(device)s' % {
'class_id': chosen_class_id,
'device': self.device[0]
})
net_helpers.assert_ping(self.ns[1],
str(netaddr.IPNetwork(self.ip_vxlan[0]).ip),
count=1)
tc_classes = tc_lib.list_tc_policy_class(self.device[0],
namespace=self.ns[0])
for tc_class in tc_classes:
if tc_class['classid'] == chosen_class_id:
self.assertGreater(tc_class['stats']['bytes'], bytes)
self.assertGreater(tc_class['stats']['packets'], packets)
else:
self.assertEqual(0, tc_class['stats']['bytes'])
self.assertEqual(0, tc_class['stats']['packets'])
def test_add_tc_qdisc_htb(self):
tc_lib.add_tc_qdisc('device', 'htb', parent='root', handle='1:',
namespace=self.namespace)
self.mock_add_tc_qdisc.assert_called_once_with(
'device', parent=rtnl.TC_H_ROOT, kind='htb', handle='1:0',
namespace=self.namespace)
self.mock_add_tc_qdisc.reset_mock()
tc_lib.add_tc_qdisc('device', 'htb', parent='root', handle='2',
namespace=self.namespace)
self.mock_add_tc_qdisc.assert_called_once_with(
'device', parent=rtnl.TC_H_ROOT, kind='htb', handle='2:0',
namespace=self.namespace)
self.mock_add_tc_qdisc.reset_mock()
tc_lib.add_tc_qdisc('device', 'htb', parent='root', handle='3:12',
namespace=self.namespace)
self.mock_add_tc_qdisc.assert_called_once_with(
'device', parent=rtnl.TC_H_ROOT, kind='htb', handle='3:0',
namespace=self.namespace)
self.mock_add_tc_qdisc.reset_mock()
tc_lib.add_tc_qdisc('device', 'htb', parent='root', handle=4,
namespace=self.namespace)
self.mock_add_tc_qdisc.assert_called_once_with(
'device', parent=rtnl.TC_H_ROOT, kind='htb', handle='4:0',
namespace=self.namespace)
self.mock_add_tc_qdisc.reset_mock()
tc_lib.add_tc_qdisc('device', 'htb', parent='root',
namespace=self.namespace)
self.mock_add_tc_qdisc.assert_called_once_with(
'device', parent=rtnl.TC_H_ROOT, kind='htb',
namespace=self.namespace)
self.mock_add_tc_qdisc.reset_mock()
tc_lib.add_tc_qdisc('device', 'htb', parent='root', handle=5)
self.mock_add_tc_qdisc.assert_called_once_with(
'device', parent=rtnl.TC_H_ROOT, kind='htb', handle='5:0',
namespace=None)
self.mock_add_tc_qdisc.reset_mock()
