yardstick/network_services/traffic_profile/ixia_rfc2544.py

   1 # Copyright (c) 2016-2017 Intel Corporation
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #      http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14
  15 import logging
  16
  17 from yardstick.network_services.traffic_profile.trex_traffic_profile import \
  18     TrexProfile
  19
  20 LOG = logging.getLogger(__name__)
  21
  22
  23 class IXIARFC2544Profile(TrexProfile):
  24
  25     UPLINK = 'uplink'
  26     DOWNLINK = 'downlink'
  27
  28     def __init__(self, yaml_data):
  29         super(IXIARFC2544Profile, self).__init__(yaml_data)
  30         self.rate = self.config.frame_rate
  31
  32     def _get_ixia_traffic_profile(self, profile_data, mac=None):
  33         if mac is None:
  34             mac = {}
  35
  36         result = {}
  37         for traffickey, values in profile_data.items():
  38             if not traffickey.startswith((self.UPLINK, self.DOWNLINK)):
  39                 continue
  40
  41             try:
  42                 # values should be single-item dict, so just grab the first item
  43                 try:
  44                     key, value = next(iter(values.items()))
  45                 except StopIteration:
  46                     result[traffickey] = {}
  47                     continue
  48
  49                 port_id = value.get('id', 1)
  50                 port_index = port_id - 1
  51                 try:
  52                     ip = value['outer_l3v6']
  53                 except KeyError:
  54                     ip = value['outer_l3v4']
  55                     src_key, dst_key = 'srcip4', 'dstip4'
  56                 else:
  57                     src_key, dst_key = 'srcip6', 'dstip6'
  58
  59                 result[traffickey] = {
  60                     'bidir': False,
  61                     'iload': '100',
  62                     'id': port_id,
  63                     'outer_l2': {
  64                         'framesize': value['outer_l2']['framesize'],
  65                         'framesPerSecond': True,
  66                         'srcmac': mac['src_mac_{}'.format(port_index)],
  67                         'dstmac': mac['dst_mac_{}'.format(port_index)],
  68                     },
  69                     'outer_l3': {
  70                         'count': ip['count'],
  71                         'dscp': ip['dscp'],
  72                         'ttl': ip['ttl'],
  73                         src_key: ip[src_key].split("-")[0],
  74                         dst_key: ip[dst_key].split("-")[0],
  75                         'type': key,
  76                         'proto': ip['proto'],
  77                     },
  78                     'outer_l4': value['outer_l4'],
  79                 }
  80             except KeyError:
  81                 continue
  82
  83         return result
  84
  85     def _ixia_traffic_generate(self, traffic, ixia_obj):
  86         for key, value in traffic.items():
  87             if key.startswith((self.UPLINK, self.DOWNLINK)):
  88                 value['iload'] = str(self.rate)
  89         ixia_obj.update_frame(traffic)
  90         ixia_obj.update_ip_packet(traffic)
  91         ixia_obj.start_traffic()
  92
  93     def update_traffic_profile(self, traffic_generator):
  94         def port_generator():
  95             for vld_id, intfs in sorted(traffic_generator.networks.items()):
  96                 if not vld_id.startswith((self.UPLINK, self.DOWNLINK)):
  97                     continue
  98                 profile_data = self.params.get(vld_id)
  99                 if not profile_data:
 100                     continue
 101                 self.profile_data = profile_data
 102                 self.full_profile.update({vld_id: self.profile_data})
 103                 for intf in intfs:
 104                     yield traffic_generator.vnfd_helper.port_num(intf)
 105
 106         self.ports = [port for port in port_generator()]
 107
 108     def execute_traffic(self, traffic_generator, ixia_obj=None, mac=None):
 109         mac = {} if mac is None else mac
 110         first_run = self.first_run
 111         if self.first_run:
 112             self.first_run = False
 113             self.full_profile = {}
 114             self.pg_id = 0
 115             self.update_traffic_profile(traffic_generator)
 116             self.max_rate = self.rate
 117             self.min_rate = 0
 118         else:
 119             self.rate = round(float(self.max_rate + self.min_rate) / 2.0, 2)
 120
 121         traffic = self._get_ixia_traffic_profile(self.full_profile, mac)
 122         self._ixia_traffic_generate(traffic, ixia_obj)
 123         return first_run
 124
 125     def get_drop_percentage(self, samples, tol_min, tolerance, duration=30.0,
 126                             first_run=False):
 127         completed = False
 128         drop_percent = 100
 129         num_ifaces = len(samples)
 130         in_packets_sum = sum(
 131             [samples[iface]['in_packets'] for iface in samples])
 132         out_packets_sum = sum(
 133             [samples[iface]['out_packets'] for iface in samples])
 134         rx_throughput = sum(
 135             [samples[iface]['RxThroughput'] for iface in samples])
 136         rx_throughput = round(float(rx_throughput), 2)
 137         tx_throughput = sum(
 138             [samples[iface]['TxThroughput'] for iface in samples])
 139         tx_throughput = round(float(tx_throughput), 2)
 140         packet_drop = abs(out_packets_sum - in_packets_sum)
 141
 142         try:
 143             drop_percent = round(
 144                 (packet_drop / float(out_packets_sum)) * 100, 2)
 145         except ZeroDivisionError:
 146             LOG.info('No traffic is flowing')
 147
 148         samples['TxThroughput'] = tx_throughput
 149         samples['RxThroughput'] = rx_throughput
 150         samples['DropPercentage'] = drop_percent
 151
 152         if first_run:
 153             self.rate = out_packets_sum / duration / num_ifaces
 154             completed = True if drop_percent <= tolerance else False
 155
 156         if drop_percent > tolerance:
 157             self.max_rate = self.rate
 158         elif drop_percent < tol_min:
 159             self.min_rate = self.rate
 160         else:
 161             completed = True
 162
 163         return completed, samples