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##############################################################################
# Copyright (c) 2015 Ericsson AB and others.
#
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
##############################################################################
from __future__ import absolute_import
from __future__ import print_function
import logging
import pkg_resources
from oslo_serialization import jsonutils
import yardstick.ssh as ssh
from yardstick.benchmark.scenarios import base
LOG = logging.getLogger(__name__)
class Pktgen(base.Scenario):
"""Execute pktgen between two hosts
Parameters
packetsize - packet size in bytes without the CRC
type: int
unit: bytes
default: 60
number_of_ports - number of UDP ports to test
type: int
unit: na
default: 10
duration - duration of the test
type: int
unit: seconds
default: 20
"""
__scenario_type__ = "Pktgen"
TARGET_SCRIPT = 'pktgen_benchmark.bash'
def __init__(self, scenario_cfg, context_cfg):
self.scenario_cfg = scenario_cfg
self.context_cfg = context_cfg
self.setup_done = False
def setup(self):
"""scenario setup"""
self.target_script = pkg_resources.resource_filename(
'yardstick.benchmark.scenarios.networking',
Pktgen.TARGET_SCRIPT)
host = self.context_cfg['host']
host_user = host.get('user', 'ubuntu')
host_ssh_port = host.get('ssh_port', ssh.DEFAULT_PORT)
host_ip = host.get('ip', None)
host_key_filename = host.get('key_filename', '~/.ssh/id_rsa')
target = self.context_cfg['target']
target_user = target.get('user', 'ubuntu')
target_ssh_port = target.get('ssh_port', ssh.DEFAULT_PORT)
target_ip = target.get('ip', None)
target_key_filename = target.get('key_filename', '~/.ssh/id_rsa')
LOG.info("user:%s, target:%s", target_user, target_ip)
self.server = ssh.SSH(target_user, target_ip,
key_filename=target_key_filename,
port=target_ssh_port)
self.server.wait(timeout=600)
LOG.info("user:%s, host:%s", host_user, host_ip)
self.client = ssh.SSH(host_user, host_ip,
key_filename=host_key_filename,
port=host_ssh_port)
self.client.wait(timeout=600)
# copy script to host
self.client._put_file_shell(self.target_script, '~/pktgen.sh')
self.setup_done = True
def _iptables_setup(self):
"""Setup iptables on server to monitor for received packets"""
cmd = "sudo iptables -F; " \
"sudo iptables -A INPUT -p udp --dport 1000:%s -j DROP" \
% (1000 + self.number_of_ports)
LOG.debug("Executing command: %s", cmd)
status, _, stderr = self.server.execute(cmd)
if status:
raise RuntimeError(stderr)
def _iptables_get_result(self):
"""Get packet statistics from server"""
cmd = "sudo iptables -L INPUT -vnx |" \
"awk '/dpts:1000:%s/ {{printf \"%%s\", $1}}'" \
% (1000 + self.number_of_ports)
LOG.debug("Executing command: %s", cmd)
status, stdout, stderr = self.server.execute(cmd)
if status:
raise RuntimeError(stderr)
return int(stdout)
def run(self, result):
"""execute the benchmark"""
if not self.setup_done:
self.setup()
ipaddr = self.context_cfg["target"].get("ipaddr", '127.0.0.1')
options = self.scenario_cfg['options']
packetsize = options.get("packetsize", 60)
self.number_of_ports = options.get("number_of_ports", 10)
# if run by a duration runner
duration_time = self.scenario_cfg["runner"].get("duration", None) \
if "runner" in self.scenario_cfg else None
# if run by an arithmetic runner
arithmetic_time = options.get("duration", None)
if duration_time:
duration = duration_time
elif arithmetic_time:
duration = arithmetic_time
else:
duration = 20
self._iptables_setup()
cmd = "sudo bash pktgen.sh %s %s %s %s" \
% (ipaddr, self.number_of_ports, packetsize, duration)
LOG.debug("Executing command: %s", cmd)
status, stdout, stderr = self.client.execute(cmd)
if status:
raise RuntimeError(stderr)
result.update(jsonutils.loads(stdout))
result['packets_received'] = self._iptables_get_result()
if "sla" in self.scenario_cfg:
sent = result['packets_sent']
received = result['packets_received']
ppm = 1000000 * (sent - received) / sent
sla_max_ppm = int(self.scenario_cfg["sla"]["max_ppm"])
assert ppm <= sla_max_ppm, "ppm %d > sla_max_ppm %d; " \
% (ppm, sla_max_ppm)
def _test():
"""internal test function"""
key_filename = pkg_resources.resource_filename('yardstick.resources',
'files/yardstick_key')
ctx = {
'host': {
'ip': '10.229.47.137',
'user': 'root',
'key_filename': key_filename
},
'target': {
'ip': '10.229.47.137',
'user': 'root',
'key_filename': key_filename,
'ipaddr': '10.229.47.137',
}
}
logger = logging.getLogger('yardstick')
logger.setLevel(logging.DEBUG)
options = {'packetsize': 120}
args = {'options': options}
result = {}
p = Pktgen(args, ctx)
p.run(result)
print(result)
if __name__ == '__main__':
_test()
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