1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
# Copyright (c) 2016-2019 Intel 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.
""" Add generic L3 forwarder implementation based on sample_vnf.py"""
from __future__ import absolute_import
import logging
import time
import itertools
import re
from netaddr import IPRange
from six.moves import zip
from yardstick.benchmark.contexts.base import Context
from yardstick.network_services.vnf_generic.vnf.sample_vnf import SampleVNF, \
DpdkVnfSetupEnvHelper
LOG = logging.getLogger(__name__)
class RouterVNF(SampleVNF):
WAIT_TIME = 1
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 = DpdkVnfSetupEnvHelper
# For heat test cases
vnfd['mgmt-interface'].pop("pkey", "")
vnfd['mgmt-interface']['password'] = 'password'
super(RouterVNF, self).__init__(name, vnfd, setup_env_helper_type, resource_helper_type)
def instantiate(self, scenario_cfg, context_cfg):
self.scenario_helper.scenario_cfg = scenario_cfg
self.context_cfg = context_cfg
self.configure_routes(self.name, scenario_cfg, context_cfg)
def wait_for_instantiate(self):
time.sleep(self.WAIT_TIME)
def _run(self):
# we can't share ssh paramiko objects to force new connection
self.ssh_helper.drop_connection()
def terminate(self):
self._tear_down()
self.resource_helper.stop_collect()
def scale(self, flavor=""):
pass
@staticmethod
def row_with_header(header, data):
"""Returns dictionary per row of values for 'ip show stats'.
Args:
header(str): output header
data(str): output data
Returns:
dict: dictionary per row of values for 'ip show stats'
"""
prefix, columns = header.strip().split(':')
column_names = ["{0}:{1}".format(prefix, h) for h in columns.split()]
return dict(list(zip(column_names, data.strip().split())))
RX_TX_RE = re.compile(r"\s+[RT]X[^:]*:")
@classmethod
def get_stats(cls, stdout):
"""Returns list of IP statistics.
Args:
stdout(str): command output
Returns:
dict: list of IP statistics
"""
input_lines = stdout.splitlines()
table = {}
for n, row in enumerate(input_lines):
if cls.RX_TX_RE.match(row):
# use pairs of rows, header and data
table.update(cls.row_with_header(*input_lines[n:n + 2]))
return table
def collect_kpi(self):
# Implement stats collection
ip_link_stats = '/sbin/ip -s link'
stdout = self.ssh_helper.execute(ip_link_stats)[1]
link_stats = self.get_stats(stdout)
# get RX/TX from link_stats and assign to results
physical_node = Context.get_physical_node_from_server(
self.scenario_helper.nodes[self.name])
result = {
"physical_node": physical_node,
"packets_in": 0,
"packets_dropped": 0,
"packets_fwd": 0,
"link_stats": link_stats
}
LOG.debug("%s collect KPIs %s", "RouterVNF", result)
return result
INTERFACE_WAIT = 2
def configure_routes(self, node_name, scenario_cfg, context_cfg):
# Configure IP of dataplane ports and add static ARP entries
#
# This function should be modified to configure a 3rd party/commercial VNF.
# The current implementation works on a Linux based VNF with "ip" command.
#
# Flow contains:
# {'src_ip': ['152.16.100.26-152.16.100.27'],
# 'dst_ip': ['152.16.40.26-152.16.40.27'], 'count': 2}
ifaces = []
dst_macs = []
ip_cmd_replace = '/sbin/ip addr replace %s/24 dev %s'
ip_cmd_up = '/sbin/ip link set %s up'
ip_cmd_flush = '/sbin/ip address flush dev %s'
# Get VNF IPs from test case file
for value in context_cfg['nodes'][node_name]['interfaces'].values():
dst_macs.append(value['dst_mac'])
# Get the network interface name using local_mac
iname = self.ssh_helper.execute("/sbin/ip a |grep -B 1 %s | head -n 1"
% (value['local_mac']))
iname = iname[1].split(":")[1].strip()
ifaces.append(iname)
self.ssh_helper.execute(ip_cmd_flush % iname)
# Get the local_ip from context_cfg and assign to the data ports
self.ssh_helper.execute(ip_cmd_replace % (str(value['local_ip']),
iname))
# Enable interface
self.ssh_helper.execute(ip_cmd_up % iname)
time.sleep(self.INTERFACE_WAIT)
# Configure static ARP entries for each IP
# using SSH or REST API calls
try:
src_ips = scenario_cfg['options']['flow']['src_ip']
dst_ips = scenario_cfg['options']['flow']['dst_ip']
except KeyError:
raise KeyError("Missing flow definition in scenario section" +
" of the task definition file")
# Multiport
ip_ranges = []
for src, dst in zip(src_ips, dst_ips):
range1 = itertools.cycle(iter(src.split('-')))
range2 = itertools.cycle(iter(dst.split('-')))
range1 = IPRange(next(range1), next(range1))
range2 = IPRange(next(range2), next(range2))
ip_ranges.append(range1)
ip_ranges.append(range2)
ip_cmd = '/sbin/ip neigh add %s lladdr %s dev %s nud perm'
for idx, iface in enumerate(ifaces):
for addr in ip_ranges[idx]:
self.ssh_helper.execute(ip_cmd % (addr, dst_macs[idx], iface))
arp_status = self.ssh_helper.execute("arp -a -n")
LOG.debug('arp %s', arp_status)
|
