yardstick/network_services/vnf_generic/vnf/cgnapt_vnf.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 from __future__ import absolute_import
  16 import time
  17 import logging
  18
  19 from six.moves import zip
  20 from yardstick.network_services.vnf_generic.vnf.sample_vnf import SampleVNF, DpdkVnfSetupEnvHelper
  21
  22 LOG = logging.getLogger(__name__)
  23
  24 # CGNAPT should work the same on all systems, we can provide the binary
  25 CGNAPT_PIPELINE_COMMAND = 'sudo {tool_path} -p {ports_len_hex} -f {cfg_file} -s {script}'
  26 WAIT_FOR_STATIC_NAPT = 4
  27
  28 CGNAPT_COLLECT_KPI = """\
  29 CG-NAPT(.*\n)*\
  30 Received\s(\d+),\
  31 Missed\s(\d+),\
  32 Dropped\s(\d+),\
  33 Translated\s(\d+),\
  34 ingress\
  35 """
  36
  37
  38 class CgnaptApproxSetupEnvHelper(DpdkVnfSetupEnvHelper):
  39
  40     APP_NAME = "vCGNAPT"
  41     CFG_CONFIG = "/tmp/cgnapt_config"
  42     CFG_SCRIPT = "/tmp/cgnapt_script"
  43     DEFAULT_CONFIG_TPL_CFG = "cgnat.cfg"
  44     PIPELINE_COMMAND = CGNAPT_PIPELINE_COMMAND
  45     SW_DEFAULT_CORE = 6
  46     HW_DEFAULT_CORE = 3
  47     VNF_TYPE = "CGNAPT"
  48
  49     @staticmethod
  50     def _generate_ip_from_pool(ip):
  51         ip_parts = ip.split('.')
  52         assert len(ip_parts) == 4
  53         iter1 = (str(n) for n in range(int(ip_parts[2]), 256))
  54         for ip_parts[2] in iter1:
  55             yield '.'.join(ip_parts)
  56
  57     @staticmethod
  58     def _update_cgnat_script_file(ip_pipeline_cfg, mcpi, vnf_str):
  59         pipeline_config_str = str(ip_pipeline_cfg)
  60         input_cmds = '\n'.join(mcpi)
  61         icmp_flag = 'link 0 down' in input_cmds
  62         if icmp_flag:
  63             pipeline_config_str = ''
  64         return '\n'.join([pipeline_config_str, input_cmds])
  65
  66     def scale(self, flavor=""):
  67         raise NotImplementedError
  68
  69     def _get_cgnapt_config(self, interfaces=None):
  70         if interfaces is None:
  71             interfaces = self.vnfd_helper.interfaces
  72
  73         gateway_ips = []
  74
  75         # fixme: Get private port and gateway from port list
  76         priv_ports = interfaces[::2]
  77         for interface in priv_ports:
  78             gateway_ips.append(self._get_ports_gateway(interface["name"]))
  79         return gateway_ips
  80
  81
  82 class CgnaptApproxVnf(SampleVNF):
  83
  84     APP_NAME = "vCGNAPT"
  85     APP_WORD = 'cgnapt'
  86     COLLECT_KPI = CGNAPT_COLLECT_KPI
  87
  88     COLLECT_MAP = {
  89         "packets_in": 2,
  90         "packets_fwd": 5,
  91         "packets_dropped": 4,
  92     }
  93
  94     def __init__(self, name, vnfd, setup_env_helper_type=None, resource_helper_type=None):
  95         if setup_env_helper_type is None:
  96             setup_env_helper_type = CgnaptApproxSetupEnvHelper
  97
  98         super(CgnaptApproxVnf, self).__init__(name, vnfd, setup_env_helper_type,
  99                                               resource_helper_type)
 100
 101     def _vnf_up_post(self):
 102         super(CgnaptApproxVnf, self)._vnf_up_post()
 103         if self.scenario_helper.options.get('napt', 'static') != 'static':
 104             return
 105
 106         ip_iter = self.setup_helper._generate_ip_from_pool("152.16.40.10")
 107         gw_ips = self.setup_helper._get_cgnapt_config()
 108         if self.scenario_helper.vnf_cfg.get("lb_config", "SW") == 'HW':
 109             pipeline = self.setup_helper.HW_DEFAULT_CORE
 110             offset = 3
 111         else:
 112             pipeline = self.setup_helper.SW_DEFAULT_CORE - 1
 113             offset = 0
 114
 115         worker_threads = int(self.scenario_helper.vnf_cfg["worker_threads"])
 116         cmd_template = "p {0} entry addm {1} 1 {2} 1 0 32 65535 65535 65535"
 117         for gw, ip in zip(gw_ips, ip_iter):
 118             cmd = cmd_template.format(pipeline, gw, ip)
 119             pipeline += worker_threads
 120             pipeline += offset
 121             self.vnf_execute(cmd)
 122
 123         time.sleep(WAIT_FOR_STATIC_NAPT)