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 logging
  17
  18 from yardstick.network_services.vnf_generic.vnf.sample_vnf import SampleVNF, DpdkVnfSetupEnvHelper
  19
  20 LOG = logging.getLogger(__name__)
  21
  22 # CGNAPT should work the same on all systems, we can provide the binary
  23 CGNAPT_PIPELINE_COMMAND = 'sudo {tool_path} -p {port_mask_hex} -f {cfg_file} -s {script}'
  24 WAIT_FOR_STATIC_NAPT = 4
  25
  26 CGNAPT_COLLECT_KPI = """\
  27 CG-NAPT(.*\n)*\
  28 Received\s(\d+),\
  29 Missed\s(\d+),\
  30 Dropped\s(\d+),\
  31 Translated\s(\d+),\
  32 ingress\
  33 """
  34
  35
  36 class CgnaptApproxSetupEnvHelper(DpdkVnfSetupEnvHelper):
  37
  38     APP_NAME = "vCGNAPT"
  39     CFG_CONFIG = "/tmp/cgnapt_config"
  40     CFG_SCRIPT = "/tmp/cgnapt_script"
  41     DEFAULT_CONFIG_TPL_CFG = "cgnat.cfg"
  42     PIPELINE_COMMAND = CGNAPT_PIPELINE_COMMAND
  43     SW_DEFAULT_CORE = 6
  44     HW_DEFAULT_CORE = 3
  45     VNF_TYPE = "CGNAPT"
  46
  47     @staticmethod
  48     def _generate_ip_from_pool(ip):
  49         ip_parts = ip.split('.')
  50         assert len(ip_parts) == 4
  51         iter1 = (str(n) for n in range(int(ip_parts[2]), 256))
  52         for ip_parts[2] in iter1:
  53             yield '.'.join(ip_parts)
  54
  55     @staticmethod
  56     def _update_cgnat_script_file(ip_pipeline_cfg, mcpi):
  57         pipeline_config_str = str(ip_pipeline_cfg)
  58         input_cmds = '\n'.join(mcpi)
  59         icmp_flag = 'link 0 down' in input_cmds
  60         if icmp_flag:
  61             pipeline_config_str = ''
  62         return '\n'.join([pipeline_config_str, input_cmds])
  63
  64     def scale(self, flavor=""):
  65         raise NotImplementedError
  66
  67     def _get_cgnapt_config(self, interfaces=None):
  68         # TODO: static CGNAPT is broken, don't use it
  69         if interfaces is None:
  70             interfaces = self.vnfd_helper.interfaces
  71
  72         # fixme: Get private port and gateway from port list
  73         uplink_ports = self.vnfd_helper.port_pairs.uplink_ports
  74         return [self._get_ports_gateway(intf["name"]) for intf in uplink_ports]
  75
  76
  77 class CgnaptApproxVnf(SampleVNF):
  78
  79     APP_NAME = "vCGNAPT"
  80     APP_WORD = 'cgnapt'
  81     COLLECT_KPI = CGNAPT_COLLECT_KPI
  82
  83     COLLECT_MAP = {
  84         "packets_in": 2,
  85         "packets_fwd": 5,
  86         "packets_dropped": 4,
  87     }
  88
  89     def __init__(self, name, vnfd, setup_env_helper_type=None, resource_helper_type=None):
  90         if setup_env_helper_type is None:
  91             setup_env_helper_type = CgnaptApproxSetupEnvHelper
  92
  93         super(CgnaptApproxVnf, self).__init__(name, vnfd, setup_env_helper_type,
  94                                               resource_helper_type)
  95
  96     def _vnf_up_post(self):
  97         super(CgnaptApproxVnf, self)._vnf_up_post()
  98         if self.scenario_helper.options.get('napt', 'static') != 'static':
  99             return
 100
 101         # ip_iter = self.setup_helper._generate_ip_from_pool("152.16.40.10")
 102         # gw_ips = self.setup_helper._get_cgnapt_config()
 103         # if self.scenario_helper.vnf_cfg.get("lb_config", "SW") == 'HW':
 104         #     pipeline = self.setup_helper.HW_DEFAULT_CORE
 105         #     offset = 3
 106         # else:
 107         #     pipeline = self.setup_helper.SW_DEFAULT_CORE - 1
 108         #     offset = 0
 109         #
 110         # worker_threads = int(self.scenario_helper.vnf_cfg["worker_threads"])
 111         # # p <pipeline id> entry addm <prv_ipv4/6> prvport> <pub_ip> <pub_port> <phy_port> <ttl>
 112         # # <no_of_entries> <end_prv_port> <end_pub_port>
 113         # cmd_template = "p {0} entry addm {1} 1 {2} 1 0 32 65535 65535 65535"
 114         # for gw, ip in zip(gw_ips, ip_iter):
 115         #     cmd = cmd_template.format(pipeline, gw, ip)
 116         #     pipeline += worker_threads
 117         #     pipeline += offset
 118         #     self.vnf_execute(cmd)
 119         #
 120         # time.sleep(WAIT_FOR_STATIC_NAPT)