diff options
Diffstat (limited to 'yardstick/network_services/vnf_generic/vnf/tg_vcmts_pktgen.py')
| -rwxr-xr-x | yardstick/network_services/vnf_generic/vnf/tg_vcmts_pktgen.py | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/yardstick/network_services/vnf_generic/vnf/tg_vcmts_pktgen.py b/yardstick/network_services/vnf_generic/vnf/tg_vcmts_pktgen.py new file mode 100755 index 000000000..c6df9d04c --- /dev/null +++ b/yardstick/network_services/vnf_generic/vnf/tg_vcmts_pktgen.py @@ -0,0 +1,215 @@ +# Copyright (c) 2019 Viosoft 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 +import time +import socket +import yaml +import os + +from yardstick.network_services.vnf_generic.vnf import sample_vnf +from yardstick.common import exceptions + + +LOG = logging.getLogger(__name__) + + +class PktgenHelper(object): + + RETRY_SECONDS = 0.5 + RETRY_COUNT = 20 + CONNECT_TIMEOUT = 5 + + def __init__(self, host, port=23000): + self.host = host + self.port = port + self.connected = False + + def _connect(self): + self._sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) + ret = True + try: + self._sock.settimeout(self.CONNECT_TIMEOUT) + self._sock.connect((self.host, self.port)) + except (socket.gaierror, socket.error, socket.timeout): + self._sock.close() + ret = False + + return ret + + def connect(self): + if self.connected: + return True + LOG.info("Connecting to pktgen instance at %s...", self.host) + for idx in range(self.RETRY_COUNT): + self.connected = self._connect() + if self.connected: + return True + LOG.debug("Connection attempt %d: Unable to connect to %s, " \ + "retrying in %d seconds", + idx, self.host, self.RETRY_SECONDS) + time.sleep(self.RETRY_SECONDS) + + LOG.error("Unable to connect to pktgen instance on %s !", + self.host) + return False + + + def send_command(self, command): + if not self.connected: + LOG.error("Pktgen socket is not connected") + return False + + try: + self._sock.sendall((command + "\n").encode()) + time.sleep(1) + except (socket.timeout, socket.error): + LOG.error("Error sending command '%s'", command) + return False + + return True + + +class VcmtsPktgenSetupEnvHelper(sample_vnf.SetupEnvHelper): + + BASE_PARAMETERS = "export LUA_PATH=/vcmts/Pktgen.lua;"\ + + "export CMK_PROC_FS=/host/proc;" + + PORTS_COUNT = 8 + + def generate_pcap_filename(self, port_cfg): + return port_cfg['traffic_type'] + "_" + port_cfg['num_subs'] \ + + "cms_" + port_cfg['num_ofdm'] + "ofdm.pcap" + + def find_port_cfg(self, ports_cfg, port_name): + for port_cfg in ports_cfg: + if port_name in port_cfg: + return port_cfg + return None + + def build_pktgen_parameters(self, pod_cfg): + ports_cfg = pod_cfg['ports'] + port_cfg = list() + + for i in range(self.PORTS_COUNT): + port_cfg.append(self.find_port_cfg(ports_cfg, 'port_' + str(i))) + + pktgen_parameters = self.BASE_PARAMETERS + " " \ + + " /pktgen-config/setup.sh " + pod_cfg['pktgen_id'] \ + + " " + pod_cfg['num_ports'] + + for i in range(self.PORTS_COUNT): + pktgen_parameters += " " + port_cfg[i]['net_pktgen'] + + for i in range(self.PORTS_COUNT): + pktgen_parameters += " " + self.generate_pcap_filename(port_cfg[i]) + + return pktgen_parameters + + def start_pktgen(self, pod_cfg): + self.ssh_helper.drop_connection() + cmd = self.build_pktgen_parameters(pod_cfg) + LOG.debug("Executing: '%s'", cmd) + self.ssh_helper.send_command(cmd) + LOG.info("Pktgen executed") + + def setup_vnf_environment(self): + pass + + +class VcmtsPktgen(sample_vnf.SampleVNFTrafficGen): + + TG_NAME = 'VcmtsPktgen' + APP_NAME = 'VcmtsPktgen' + RUN_WAIT = 4 + DEFAULT_RATE = 8.0 + + PKTGEN_BASE_PORT = 23000 + + def __init__(self, name, vnfd, setup_env_helper_type=None, + resource_helper_type=None): + if setup_env_helper_type is None: + setup_env_helper_type = VcmtsPktgenSetupEnvHelper + super(VcmtsPktgen, self).__init__( + name, vnfd, setup_env_helper_type, resource_helper_type) + + self.pktgen_address = vnfd['mgmt-interface']['ip'] + LOG.info("Pktgen container '%s', IP: %s", name, self.pktgen_address) + + def extract_pod_cfg(self, pktgen_pods_cfg, pktgen_id): + for pod_cfg in pktgen_pods_cfg: + if pod_cfg['pktgen_id'] == pktgen_id: + return pod_cfg + return None + + def instantiate(self, scenario_cfg, context_cfg): + super(VcmtsPktgen, self).instantiate(scenario_cfg, context_cfg) + self._start_server() + options = scenario_cfg.get('options', {}) + self.pktgen_rate = options.get('pktgen_rate', self.DEFAULT_RATE) + + try: + pktgen_values_filepath = options['pktgen_values'] + except KeyError: + raise KeyError("Missing pktgen_values key in scenario options" \ + "section of the task definition file") + + if not os.path.isfile(pktgen_values_filepath): + raise RuntimeError("The pktgen_values file path provided " \ + "does not exists") + + # The yaml_loader.py (SafeLoader) underlying regex has an issue + # with reading PCI addresses (processed as double). so the + # BaseLoader is used here. + with open(pktgen_values_filepath) as stream: + pktgen_values = yaml.load(stream, Loader=yaml.BaseLoader) + + if pktgen_values == None: + raise RuntimeError("Error reading pktgen_values file provided (" + + pktgen_values_filepath + ")") + + self.pktgen_id = int(options[self.name]['pktgen_id']) + self.resource_helper.pktgen_id = self.pktgen_id + + self.pktgen_helper = PktgenHelper(self.pktgen_address, + self.PKTGEN_BASE_PORT + self.pktgen_id) + + pktgen_pods_cfg = pktgen_values['topology']['pktgen_pods'] + + self.pod_cfg = self.extract_pod_cfg(pktgen_pods_cfg, + str(self.pktgen_id)) + + if self.pod_cfg == None: + raise KeyError("Pktgen with id " + str(self.pktgen_id) + \ + " was not found") + + self.setup_helper.start_pktgen(self.pod_cfg) + + def run_traffic(self, traffic_profile): + if not self.pktgen_helper.connect(): + raise exceptions.PktgenActionError(command="connect") + LOG.info("Connected to pktgen instance at %s", self.pktgen_address) + + commands = [] + for i in range(self.setup_helper.PORTS_COUNT): + commands.append('pktgen.set("' + str(i) + '", "rate", ' + + "%0.1f" % self.pktgen_rate + ');') + + commands.append('pktgen.start("all");') + + for command in commands: + if self.pktgen_helper.send_command(command): + LOG.debug("Command '%s' sent to pktgen", command) + LOG.info("Traffic started on %s...", self.name) + return True |