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# Copyright (c) 2016-2017 Intel Corporation
#
# 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.
import ipaddress
import logging
import six
from yardstick.common import utils
from yardstick.network_services.libs.ixia_libs.ixnet import ixnet_api
from yardstick.network_services.vnf_generic.vnf.sample_vnf import SampleVNFTrafficGen
from yardstick.network_services.vnf_generic.vnf.sample_vnf import ClientResourceHelper
from yardstick.network_services.vnf_generic.vnf.sample_vnf import Rfc2544ResourceHelper
LOG = logging.getLogger(__name__)
WAIT_AFTER_CFG_LOAD = 10
WAIT_FOR_TRAFFIC = 30
WAIT_PROTOCOLS_STARTED = 360
class IxiaBasicScenario(object):
def __init__(self, client, context_cfg, ixia_cfg):
self.client = client
self.context_cfg = context_cfg
self.ixia_cfg = ixia_cfg
self._uplink_vports = None
self._downlink_vports = None
def apply_config(self):
pass
def create_traffic_model(self, traffic_profile=None):
# pylint: disable=unused-argument
vports = self.client.get_vports()
self._uplink_vports = vports[::2]
self._downlink_vports = vports[1::2]
self.client.create_traffic_model(self._uplink_vports,
self._downlink_vports)
def run_protocols(self):
pass
def stop_protocols(self):
pass
class IxiaPppoeClientScenario(object):
def __init__(self, client, context_cfg, ixia_cfg):
self.client = client
self._uplink_vports = None
self._downlink_vports = None
self._access_topologies = []
self._core_topologies = []
self._context_cfg = context_cfg
self._ixia_cfg = ixia_cfg
self.protocols = []
self.device_groups = []
def apply_config(self):
vports = self.client.get_vports()
self._uplink_vports = vports[::2]
self._downlink_vports = vports[1::2]
self._fill_ixia_config()
self._apply_access_network_config()
self._apply_core_network_config()
def create_traffic_model(self, traffic_profile):
endpoints_id_pairs = self._get_endpoints_src_dst_id_pairs(
traffic_profile.full_profile)
endpoints_obj_pairs = \
self._get_endpoints_src_dst_obj_pairs(endpoints_id_pairs)
uplink_endpoints = endpoints_obj_pairs[::2]
downlink_endpoints = endpoints_obj_pairs[1::2]
self.client.create_ipv4_traffic_model(uplink_endpoints,
downlink_endpoints)
def run_protocols(self):
LOG.info('PPPoE Scenario - Start Protocols')
self.client.start_protocols()
utils.wait_until_true(
lambda: self.client.is_protocols_running(self.protocols),
timeout=WAIT_PROTOCOLS_STARTED, sleep=2)
def stop_protocols(self):
LOG.info('PPPoE Scenario - Stop Protocols')
self.client.stop_protocols()
def _get_intf_addr(self, intf):
"""Retrieve interface IP address and mask
:param intf: could be the string which represents IP address
with mask (e.g 192.168.10.2/24) or a dictionary with the host
name and the port (e.g. {'tg__0': 'xe1'})
:return: (tuple) pair of ip address and mask
"""
if isinstance(intf, six.string_types):
ip, mask = tuple(intf.split('/'))
return ip, int(mask)
node_name, intf_name = next(iter(intf.items()))
node = self._context_cfg["nodes"].get(node_name, {})
interface = node.get("interfaces", {})[intf_name]
ip = interface["local_ip"]
mask = interface["netmask"]
ipaddr = ipaddress.ip_network(six.text_type('{}/{}'.format(ip, mask)),
strict=False)
return ip, ipaddr.prefixlen
@staticmethod
def _get_endpoints_src_dst_id_pairs(flows_params):
"""Get list of flows src/dst port pairs
Create list of flows src/dst port pairs based on traffic profile
flows data. Each uplink/downlink pair in traffic profile represents
specific flows between the pair of ports.
Example ('port' key represents port on which flow will be created):
Input flows data:
uplink_0:
ipv4:
id: 1
port: xe0
downlink_0:
ipv4:
id: 2
port: xe1
uplink_1:
ipv4:
id: 3
port: xe2
downlink_1:
ipv4:
id: 4
port: xe3
Result list: ['xe0', 'xe1', 'xe2', 'xe3']
Result list means that the following flows pairs will be created:
- uplink 0: port xe0 <-> port xe1
- downlink 0: port xe1 <-> port xe0
- uplink 1: port xe2 <-> port xe3
- downlink 1: port xe3 <-> port xe2
:param flows_params: ordered dict of traffic profile flows params
:return: (list) list of flows src/dst ports
"""
if len(flows_params) % 2:
raise RuntimeError('Number of uplink/downlink pairs'
' in traffic profile is not equal')
endpoint_pairs = []
for flow in flows_params:
port = flows_params[flow]['ipv4'].get('port')
if port is None:
continue
endpoint_pairs.append(port)
return endpoint_pairs
def _get_endpoints_src_dst_obj_pairs(self, endpoints_id_pairs):
"""Create list of uplink/downlink device groups pairs
Based on traffic profile options, create list of uplink/downlink
device groups pairs between which flow groups will be created:
1. In case uplink/downlink flows in traffic profile doesn't have
specified 'port' key, flows will be created between each device
group on access port and device group on corresponding core port.
E.g.:
Device groups created on access port xe0: dg1, dg2, dg3
Device groups created on core port xe1: dg4
Flows will be created between:
dg1 -> dg4
dg4 -> dg1
dg2 -> dg4
dg4 -> dg2
dg3 -> dg4
dg4 -> dg3
2. In case uplink/downlink flows in traffic profile have specified
'port' key, flows will be created between device groups on this
port.
E.g., for the following traffic profile
uplink_0:
port: xe0
downlink_0:
port: xe1
uplink_1:
port: xe0
downlink_0:
port: xe3
Flows will be created between:
Port xe0 (dg1) -> Port xe1 (dg1)
Port xe1 (dg1) -> Port xe0 (dg1)
Port xe0 (dg2) -> Port xe3 (dg1)
Port xe3 (dg3) -> Port xe0 (dg1)
:param endpoints_id_pairs: (list) List of uplink/downlink flows ports
pairs
:return: (list) list of uplink/downlink device groups descriptors pairs
"""
pppoe = self._ixia_cfg['pppoe_client']
sessions_per_port = pppoe['sessions_per_port']
sessions_per_svlan = pppoe['sessions_per_svlan']
svlan_count = int(sessions_per_port / sessions_per_svlan)
uplink_ports = [p['tg__0'] for p in self._ixia_cfg['flow']['src_ip']]
downlink_ports = [p['tg__0'] for p in self._ixia_cfg['flow']['dst_ip']]
uplink_port_topology_map = zip(uplink_ports, self._access_topologies)
downlink_port_topology_map = zip(downlink_ports, self._core_topologies)
port_to_dev_group_mapping = {}
for port, topology in uplink_port_topology_map:
topology_dgs = self.client.get_topology_device_groups(topology)
port_to_dev_group_mapping[port] = topology_dgs
for port, topology in downlink_port_topology_map:
topology_dgs = self.client.get_topology_device_groups(topology)
port_to_dev_group_mapping[port] = topology_dgs
uplink_endpoints = endpoints_id_pairs[::2]
downlink_endpoints = endpoints_id_pairs[1::2]
uplink_dev_groups = []
group_up = [uplink_endpoints[i:i + svlan_count]
for i in range(0, len(uplink_endpoints), svlan_count)]
for group in group_up:
for i, port in enumerate(group):
uplink_dev_groups.append(port_to_dev_group_mapping[port][i])
downlink_dev_groups = []
for port in downlink_endpoints:
downlink_dev_groups.append(port_to_dev_group_mapping[port][0])
endpoint_obj_pairs = []
[endpoint_obj_pairs.extend([up, down])
for up, down in zip(uplink_dev_groups, downlink_dev_groups)]
if not endpoint_obj_pairs:
for up, down in zip(uplink_ports, downlink_ports):
uplink_dev_groups = port_to_dev_group_mapping[up]
downlink_dev_groups = \
port_to_dev_group_mapping[down] * len(uplink_dev_groups)
[endpoint_obj_pairs.extend(list(i))
for i in zip(uplink_dev_groups, downlink_dev_groups)]
return endpoint_obj_pairs
def _fill_ixia_config(self):
pppoe = self._ixia_cfg["pppoe_client"]
ipv4 = self._ixia_cfg["ipv4_client"]
_ip = [self._get_intf_addr(intf)[0] for intf in pppoe["ip"]]
self._ixia_cfg["pppoe_client"]["ip"] = _ip
_ip = [self._get_intf_addr(intf)[0] for intf in ipv4["gateway_ip"]]
self._ixia_cfg["ipv4_client"]["gateway_ip"] = _ip
addrs = [self._get_intf_addr(intf) for intf in ipv4["ip"]]
_ip = [addr[0] for addr in addrs]
_prefix = [addr[1] for addr in addrs]
self._ixia_cfg["ipv4_client"]["ip"] = _ip
self._ixia_cfg["ipv4_client"]["prefix"] = _prefix
def _apply_access_network_config(self):
pppoe = self._ixia_cfg["pppoe_client"]
sessions_per_port = pppoe['sessions_per_port']
sessions_per_svlan = pppoe['sessions_per_svlan']
svlan_count = int(sessions_per_port / sessions_per_svlan)
# add topology per uplink port (access network)
for access_tp_id, vport in enumerate(self._uplink_vports):
name = 'Topology access {}'.format(access_tp_id)
tp = self.client.add_topology(name, vport)
self._access_topologies.append(tp)
# add device group per svlan
for dg_id in range(svlan_count):
s_vlan_id = int(pppoe['s_vlan']) + dg_id + access_tp_id * svlan_count
s_vlan = ixnet_api.Vlan(vlan_id=s_vlan_id)
c_vlan = ixnet_api.Vlan(vlan_id=pppoe['c_vlan'], vlan_id_step=1)
name = 'SVLAN {}'.format(s_vlan_id)
dg = self.client.add_device_group(tp, name, sessions_per_svlan)
self.device_groups.append(dg)
# add ethernet layer to device group
ethernet = self.client.add_ethernet(dg, 'Ethernet')
self.protocols.append(ethernet)
self.client.add_vlans(ethernet, [s_vlan, c_vlan])
# add ppp over ethernet
if 'pap_user' in pppoe:
ppp = self.client.add_pppox_client(ethernet, 'pap',
pppoe['pap_user'],
pppoe['pap_password'])
else:
ppp = self.client.add_pppox_client(ethernet, 'chap',
pppoe['chap_user'],
pppoe['chap_password'])
self.protocols.append(ppp)
def _apply_core_network_config(self):
ipv4 = self._ixia_cfg["ipv4_client"]
sessions_per_port = ipv4['sessions_per_port']
sessions_per_vlan = ipv4['sessions_per_vlan']
vlan_count = int(sessions_per_port / sessions_per_vlan)
# add topology per downlink port (core network)
for core_tp_id, vport in enumerate(self._downlink_vports):
name = 'Topology core {}'.format(core_tp_id)
tp = self.client.add_topology(name, vport)
self._core_topologies.append(tp)
# add device group per vlan
for dg_id in range(vlan_count):
name = 'Core port {}'.format(core_tp_id)
dg = self.client.add_device_group(tp, name, sessions_per_vlan)
self.device_groups.append(dg)
# add ethernet layer to device group
ethernet = self.client.add_ethernet(dg, 'Ethernet')
self.protocols.append(ethernet)
if 'vlan' in ipv4:
vlan_id = int(ipv4['vlan']) + dg_id + core_tp_id * vlan_count
vlan = ixnet_api.Vlan(vlan_id=vlan_id)
self.client.add_vlans(ethernet, [vlan])
# add ipv4 layer
gw_ip = ipv4['gateway_ip'][core_tp_id]
# use gw addr to generate ip addr from the same network
ip_addr = ipaddress.IPv4Address(gw_ip) + 1
ipv4_obj = self.client.add_ipv4(ethernet, name='ipv4',
addr=ip_addr,
addr_step='0.0.0.1',
prefix=ipv4['prefix'][core_tp_id],
gateway=gw_ip)
self.protocols.append(ipv4_obj)
if ipv4.get("bgp"):
bgp_peer_obj = self.client.add_bgp(ipv4_obj,
dut_ip=ipv4["bgp"]["dut_ip"],
local_as=ipv4["bgp"]["as_number"],
bgp_type=ipv4["bgp"].get("bgp_type"))
self.protocols.append(bgp_peer_obj)
class IxiaRfc2544Helper(Rfc2544ResourceHelper):
def is_done(self):
return self.latency and self.iteration.value > 10
class IxiaResourceHelper(ClientResourceHelper):
LATENCY_TIME_SLEEP = 120
def __init__(self, setup_helper, rfc_helper_type=None):
super(IxiaResourceHelper, self).__init__(setup_helper)
self.scenario_helper = setup_helper.scenario_helper
self._ixia_scenarios = {
"IxiaBasic": IxiaBasicScenario,
"IxiaPppoeClient": IxiaPppoeClientScenario,
}
self.client = ixnet_api.IxNextgen()
if rfc_helper_type is None:
rfc_helper_type = IxiaRfc2544Helper
self.rfc_helper = rfc_helper_type(self.scenario_helper)
self.uplink_ports = None
self.downlink_ports = None
self.context_cfg = None
self._ix_scenario = None
self._connect()
def _connect(self, client=None):
self.client.connect(self.vnfd_helper)
def get_stats(self, *args, **kwargs):
return self.client.get_statistics()
def setup(self):
super(IxiaResourceHelper, self).setup()
self._init_ix_scenario()
def stop_collect(self):
self._ix_scenario.stop_protocols()
self._terminated.value = 1
def generate_samples(self, ports, duration):
stats = self.get_stats()
samples = {}
# this is not DPDK port num, but this is whatever number we gave
# when we selected ports and programmed the profile
for port_num in ports:
try:
# reverse lookup port name from port_num so the stats dict is descriptive
intf = self.vnfd_helper.find_interface_by_port(port_num)
port_name = intf['name']
avg_latency = stats['Store-Forward_Avg_latency_ns'][port_num]
min_latency = stats['Store-Forward_Min_latency_ns'][port_num]
max_latency = stats['Store-Forward_Max_latency_ns'][port_num]
samples[port_name] = {
'rx_throughput_kps': float(stats['Rx_Rate_Kbps'][port_num]),
'tx_throughput_kps': float(stats['Tx_Rate_Kbps'][port_num]),
'rx_throughput_mbps': float(stats['Rx_Rate_Mbps'][port_num]),
'tx_throughput_mbps': float(stats['Tx_Rate_Mbps'][port_num]),
'in_packets': int(stats['Valid_Frames_Rx'][port_num]),
'out_packets': int(stats['Frames_Tx'][port_num]),
'RxThroughput': float(stats['Valid_Frames_Rx'][port_num]) / duration,
'TxThroughput': float(stats['Frames_Tx'][port_num]) / duration,
'Store-Forward_Avg_latency_ns': utils.safe_cast(avg_latency, int, 0),
'Store-Forward_Min_latency_ns': utils.safe_cast(min_latency, int, 0),
'Store-Forward_Max_latency_ns': utils.safe_cast(max_latency, int, 0)
}
except IndexError:
pass
return samples
def _init_ix_scenario(self):
ixia_config = self.scenario_helper.scenario_cfg.get('ixia_config', 'IxiaBasic')
if ixia_config in self._ixia_scenarios:
scenario_type = self._ixia_scenarios[ixia_config]
self._ix_scenario = scenario_type(self.client, self.context_cfg,
self.scenario_helper.scenario_cfg['options'])
else:
raise RuntimeError(
"IXIA config type '{}' not supported".format(ixia_config))
def _initialize_client(self, traffic_profile):
"""Initialize the IXIA IxNetwork client and configure the server"""
self.client.clear_config()
self.client.assign_ports()
self._ix_scenario.apply_config()
self._ix_scenario.create_traffic_model(traffic_profile)
def run_traffic(self, traffic_profile, *args):
if self._terminated.value:
return
min_tol = self.rfc_helper.tolerance_low
max_tol = self.rfc_helper.tolerance_high
precision = self.rfc_helper.tolerance_precision
default = "00:00:00:00:00:00"
self._build_ports()
traffic_profile.update_traffic_profile(self)
self._initialize_client(traffic_profile)
mac = {}
for port_name in self.vnfd_helper.port_pairs.all_ports:
intf = self.vnfd_helper.find_interface(name=port_name)
virt_intf = intf["virtual-interface"]
# we only know static traffic id by reading the json
# this is used by _get_ixia_trafficrofile
port_num = self.vnfd_helper.port_num(intf)
mac["src_mac_{}".format(port_num)] = virt_intf.get("local_mac", default)
mac["dst_mac_{}".format(port_num)] = virt_intf.get("dst_mac", default)
self._ix_scenario.run_protocols()
try:
while not self._terminated.value:
first_run = traffic_profile.execute_traffic(
self, self.client, mac)
self.client_started.value = 1
# pylint: disable=unnecessary-lambda
utils.wait_until_true(lambda: self.client.is_traffic_stopped(),
timeout=traffic_profile.config.duration * 2)
samples = self.generate_samples(traffic_profile.ports,
traffic_profile.config.duration)
completed, samples = traffic_profile.get_drop_percentage(
samples, min_tol, max_tol, precision, first_run=first_run)
self._queue.put(samples)
if completed:
self._terminated.value = 1
except Exception: # pylint: disable=broad-except
LOG.exception('Run Traffic terminated')
self._ix_scenario.stop_protocols()
self._terminated.value = 1
def collect_kpi(self):
self.rfc_helper.iteration.value += 1
return super(IxiaResourceHelper, self).collect_kpi()
class IxiaTrafficGen(SampleVNFTrafficGen):
APP_NAME = 'Ixia'
def __init__(self, name, vnfd, task_id, setup_env_helper_type=None,
resource_helper_type=None):
if resource_helper_type is None:
resource_helper_type = IxiaResourceHelper
super(IxiaTrafficGen, self).__init__(
name, vnfd, task_id, setup_env_helper_type, resource_helper_type)
self._ixia_traffic_gen = None
self.ixia_file_name = ''
self.vnf_port_pairs = []
def _check_status(self):
pass
def terminate(self):
self.resource_helper.stop_collect()
super(IxiaTrafficGen, self).terminate()
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