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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 logging
from yardstick.common import utils
from yardstick.network_services.traffic_profile import base as tp_base
from yardstick.network_services.traffic_profile import trex_traffic_profile
LOG = logging.getLogger(__name__)
class IXIARFC2544Profile(trex_traffic_profile.TrexProfile):
UPLINK = 'uplink'
DOWNLINK = 'downlink'
DROP_PERCENT_ROUND = 6
RATE_ROUND = 5
def __init__(self, yaml_data):
super(IXIARFC2544Profile, self).__init__(yaml_data)
self.rate = self.config.frame_rate
self.rate_unit = self.config.rate_unit
def _get_ip_and_mask(self, ip_range):
_ip_range = ip_range.split('-')
if len(_ip_range) == 1:
return _ip_range[0], None
mask = utils.get_mask_from_ip_range(_ip_range[0], _ip_range[1])
return _ip_range[0], mask
def _get_fixed_and_mask(self, port_range):
_port_range = str(port_range).split('-')
if len(_port_range) == 1:
return int(_port_range[0]), 0
return int(_port_range[0]), int(_port_range[1])
def _get_ixia_traffic_profile(self, profile_data, mac=None):
mac = {} if mac is None else mac
result = {}
for traffickey, values in profile_data.items():
if not traffickey.startswith((self.UPLINK, self.DOWNLINK)):
continue
try:
# values should be single-item dict, so just grab the first item
try:
key, value = next(iter(values.items()))
except StopIteration:
result[traffickey] = {}
continue
port_id = value.get('id', 1)
port_index = port_id - 1
if value.get('outer_l3v4'):
ip = value['outer_l3v4']
src_key, dst_key = 'srcip4', 'dstip4'
else:
ip = value['outer_l3v6']
src_key, dst_key = 'srcip6', 'dstip6'
srcip, srcmask = self._get_ip_and_mask(ip[src_key])
dstip, dstmask = self._get_ip_and_mask(ip[dst_key])
outer_l4 = value.get('outer_l4')
src_port, src_port_mask = self._get_fixed_and_mask(outer_l4['srcport'])
dst_port, dst_port_mask = self._get_fixed_and_mask(outer_l4['dstport'])
result[traffickey] = {
'bidir': False,
'id': port_id,
'rate': self.rate,
'rate_unit': self.rate_unit,
'outer_l2': {
'framesize': value['outer_l2']['framesize'],
'framesPerSecond': True,
'QinQ': value['outer_l2'].get('QinQ'),
'srcmac': mac['src_mac_{}'.format(port_index)],
'dstmac': mac['dst_mac_{}'.format(port_index)],
},
'outer_l3': {
'count': ip['count'],
'dscp': ip['dscp'],
'ttl': ip['ttl'],
'srcseed': ip.get('srcseed', 1),
'dstseed': ip.get('dstseed', 1),
'srcip': srcip,
'dstip': dstip,
'srcmask': srcmask,
'dstmask': dstmask,
'type': key,
'proto': ip['proto'],
},
'outer_l4': {
'srcport': src_port,
'dstport': dst_port,
'srcportmask': src_port_mask,
'dstportmask': dst_port_mask,
'count': outer_l4['count'],
'seed': outer_l4.get('seed', 1)
}
}
except KeyError:
continue
return result
def _ixia_traffic_generate(self, traffic, ixia_obj):
ixia_obj.update_frame(traffic, self.config.duration)
ixia_obj.update_ip_packet(traffic)
ixia_obj.update_l4(traffic)
ixia_obj.start_traffic()
def update_traffic_profile(self, traffic_generator):
def port_generator():
for vld_id, intfs in sorted(traffic_generator.networks.items()):
if not vld_id.startswith((self.UPLINK, self.DOWNLINK)):
continue
profile_data = self.params.get(vld_id)
if not profile_data:
continue
self.profile_data = profile_data
self.full_profile.update({vld_id: self.profile_data})
for intf in intfs:
yield traffic_generator.vnfd_helper.port_num(intf)
self.ports = [port for port in port_generator()]
def execute_traffic(self, traffic_generator, ixia_obj=None, mac=None):
mac = {} if mac is None else mac
first_run = self.first_run
if self.first_run:
self.first_run = False
self.full_profile = {}
self.pg_id = 0
self.update_traffic_profile(traffic_generator)
self.max_rate = self.rate
self.min_rate = 0.0
else:
self.rate = round(float(self.max_rate + self.min_rate) / 2.0,
self.RATE_ROUND)
traffic = self._get_ixia_traffic_profile(self.full_profile, mac)
self._ixia_traffic_generate(traffic, ixia_obj)
return first_run
def get_drop_percentage(self, samples, tol_min, tolerance,
first_run=False):
completed = False
drop_percent = 100
num_ifaces = len(samples)
duration = self.config.duration
in_packets_sum = sum(
[samples[iface]['in_packets'] for iface in samples])
out_packets_sum = sum(
[samples[iface]['out_packets'] for iface in samples])
rx_throughput = round(float(in_packets_sum) / duration, 3)
tx_throughput = round(float(out_packets_sum) / duration, 3)
packet_drop = abs(out_packets_sum - in_packets_sum)
try:
drop_percent = round(
(packet_drop / float(out_packets_sum)) * 100,
self.DROP_PERCENT_ROUND)
except ZeroDivisionError:
LOG.info('No traffic is flowing')
if first_run:
completed = True if drop_percent <= tolerance else False
if (first_run and
self.rate_unit == tp_base.TrafficProfileConfig.RATE_FPS):
self.rate = float(out_packets_sum) / duration / num_ifaces
if drop_percent > tolerance:
self.max_rate = self.rate
elif drop_percent < tol_min:
self.min_rate = self.rate
else:
completed = True
latency_ns_avg = float(
sum([samples[iface]['Store-Forward_Avg_latency_ns']
for iface in samples])) / num_ifaces
latency_ns_min = float(
sum([samples[iface]['Store-Forward_Min_latency_ns']
for iface in samples])) / num_ifaces
latency_ns_max = float(
sum([samples[iface]['Store-Forward_Max_latency_ns']
for iface in samples])) / num_ifaces
samples['TxThroughput'] = tx_throughput
samples['RxThroughput'] = rx_throughput
samples['DropPercentage'] = drop_percent
samples['latency_ns_avg'] = latency_ns_avg
samples['latency_ns_min'] = latency_ns_min
samples['latency_ns_max'] = latency_ns_max
return completed, samples
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