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
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
|
# Copyright (c) 2016 Cisco and/or its affiliates.
# 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.
"""Library to set up IPv6 in topology."""
from ssh import SSH
from ipaddress import IPv6Network
from topology import NodeType
from topology import Topology
from constants import Constants
class IPv6Networks(object):
"""IPv6 network iterator.
:param networks: List of the available IPv6 networks.
:type networks: list
"""
def __init__(self, networks):
self._networks = list()
for network in networks:
net = IPv6Network(unicode(network))
self._networks.append(net)
num = len(self._networks)
if num == 0:
raise Exception('No IPv6 networks')
def next_network(self):
"""Get the next elemnt of the iterator.
:return: IPv6 network.
:rtype: IPv6Network object
:raises: StopIteration if there is no more elements.
"""
if len(self._networks):
return self._networks.pop()
else:
raise StopIteration()
class IPv6Setup(object):
"""IPv6 setup in topology."""
def __init__(self):
pass
def nodes_setup_ipv6_addresses(self, nodes, nodes_addr):
"""Setup IPv6 addresses on all VPP nodes in topology.
:param nodes: Nodes of the test topology.
:param nodes_addr: Available nodes IPv6 adresses.
:type nodes: dict
:type nodes_addr: dict
"""
for net in nodes_addr.values():
for port in net['ports'].values():
host = port.get('node')
if host is None:
continue
topo = Topology()
node = topo.get_node_by_hostname(nodes, host)
if node is None:
continue
if node['type'] == NodeType.DUT:
self.vpp_set_if_ipv6_addr(node, port['if'], port['addr'],
net['prefix'])
def nodes_clear_ipv6_addresses(self, nodes, nodes_addr):
"""Remove IPv6 addresses from all VPP nodes in topology.
:param nodes: Nodes of the test topology.
:param nodes_addr: Available nodes IPv6 adresses.
:type nodes: dict
:type nodes_addr: dict
"""
for net in nodes_addr.values():
for port in net['ports'].values():
host = port.get('node')
if host is None:
continue
topo = Topology()
node = topo.get_node_by_hostname(nodes, host)
if node is None:
continue
if node['type'] == NodeType.DUT:
self.vpp_del_if_ipv6_addr(node, port['if'], port['addr'],
net['prefix'])
@staticmethod
def linux_set_if_ipv6_addr(node, interface, addr, prefix):
"""Set IPv6 address on linux host.
:param node: Linux node.
:param interface: Node interface.
:param addr: IPv6 address.
:param prefix: IPv6 address prefix.
:type node: dict
:type interface: str
:type addr: str
:type prefix: str
"""
ssh = SSH()
ssh.connect(node)
cmd = "ifconfig {dev} inet6 add {ip}/{p} up".format(dev=interface,
ip=addr, p=prefix)
(ret_code, _, _) = ssh.exec_command_sudo(cmd)
if int(ret_code) != 0:
raise Exception('TG ifconfig failed')
@staticmethod
def linux_del_if_ipv6_addr(node, interface, addr, prefix):
"""Delete IPv6 address on linux host.
:param node: Linux node.
:param interface: Node interface.
:param addr: IPv6 address.
:param prefix: IPv6 address prefix.
:type node: dict
:type interface: str
:type addr: str
:type prefix: str
"""
ssh = SSH()
ssh.connect(node)
cmd = "ifconfig {dev} inet6 del {ip}/{p}".format(dev=interface,
ip=addr,
p=prefix)
(ret_code, _, _) = ssh.exec_command_sudo(cmd)
if int(ret_code) != 0:
raise Exception('TG ifconfig failed')
cmd = "ifconfig {dev} down".format(dev=interface)
(ret_code, _, _) = ssh.exec_command_sudo(cmd)
if int(ret_code) != 0:
raise Exception('TG ifconfig failed')
@staticmethod
def vpp_set_if_ipv6_addr(node, interface, addr, prefix):
"""Set IPv6 address on VPP.
:param node: VPP node.
:param interface: Node interface.
:param addr: IPv6 address.
:param prefix: IPv6 address prefix.
:type node: dict
:type interface: str
:type addr: str
:type prefix: str
"""
ssh = SSH()
ssh.connect(node)
cmd = '{c}'.format(c=Constants.VAT_BIN_NAME)
cmd_input = 'sw_interface_add_del_address {dev} {ip}/{p}'.format(
dev=interface, ip=addr, p=prefix)
(ret_code, _, _) = ssh.exec_command_sudo(cmd, cmd_input)
if int(ret_code) != 0:
raise Exception('VPP sw_interface_add_del_address failed on {h}'
.format(h=node['host']))
cmd_input = 'sw_interface_set_flags {dev} admin-up'.format(
dev=interface)
(ret_code, _, _) = ssh.exec_command_sudo(cmd, cmd_input)
if int(ret_code) != 0:
raise Exception('VPP sw_interface_set_flags failed on {h}'.format(
h=node['host']))
@staticmethod
def vpp_del_if_ipv6_addr(node, interface, addr, prefix):
"""Delete IPv6 address on VPP.
:param node: VPP node.
:param interface: Node interface.
:param addr: IPv6 address.
:param prefix: IPv6 address prefix.
:type node: dict
:type interface: str
:type addr: str
:type prefix: str
"""
ssh = SSH()
ssh.connect(node)
cmd = '{c}'.format(c=Constants.VAT_BIN_NAME)
cmd_input = 'sw_interface_add_del_address {dev} {ip}/{p} del'.format(
dev=interface, ip=addr, p=prefix)
(ret_code, _, _) = ssh.exec_command_sudo(cmd, cmd_input)
if int(ret_code) != 0:
raise Exception(
'sw_interface_add_del_address failed on {h}'.
format(h=node['host']))
cmd_input = 'sw_interface_set_flags {dev} admin-down'.format(
dev=interface)
(ret_code, _, _) = ssh.exec_command_sudo(cmd, cmd_input)
if int(ret_code) != 0:
raise Exception('VPP sw_interface_set_flags failed on {h}'.format(
h=node['host']))
@staticmethod
def vpp_ra_supress_link_layer(node, interface):
"""Supress ICMPv6 router advertisement message for link scope address
:param node: VPP node.
:param interface: Interface name.
:type node: dict
:type interface: str
"""
ssh = SSH()
ssh.connect(node)
cmd = '{c}'.format(c=Constants.VAT_BIN_NAME)
cmd_input = 'exec ip6 nd {0} ra-surpress-link-layer'.format(
interface)
(ret_code, _, _) = ssh.exec_command_sudo(cmd, cmd_input)
if int(ret_code) != 0:
raise Exception("'{0}' failed on {1}".format(cmd_input,
node['host']))
def vpp_all_ra_supress_link_layer(self, nodes):
"""Supress ICMPv6 router advertisement message for link scope address
on all VPP nodes in the topology
:param nodes: Nodes of the test topology.
:type nodes: dict
"""
for node in nodes.values():
if node['type'] == NodeType.TG:
continue
for port_k, port_v in node['interfaces'].items():
if port_k == 'mgmt':
continue
if_name = port_v.get('name')
if if_name is None:
continue
self.vpp_ra_supress_link_layer(node, if_name)
@staticmethod
def vpp_ipv6_route_add(node, link, interface, nodes_addr):
"""Setup IPv6 route on the VPP node.
:param node: Node to add route on.
:param link: Route to following link.
:param interface: Route output interface.
:param nodes_addr: Available nodes IPv6 adresses.
:type node: dict
:type link: str
:type interface: str
:type nodes_addr: dict
"""
ssh = SSH()
ssh.connect(node)
# Get route destination address from link name
net = nodes_addr.get(link)
if net is None:
raise ValueError('No network for link "{0}"'.format(link))
dst_net = '{0}/{1}'.format(net['net_addr'], net['prefix'])
# Get next-hop address
nh_addr = None
for net in nodes_addr.values():
for port in net['ports'].values():
if port['if'] == interface and port['node'] == node['host']:
for nh in net['ports'].values():
if nh['if'] != interface and nh['node'] != node['host']:
nh_addr = nh['addr']
if nh_addr is None:
raise Exception('next-hop not found')
cmd_input = 'ip_add_del_route {0} via {1} {2} resolve-attempts 10'. \
format(dst_net, nh_addr, interface)
(ret_code, _, _) = ssh.exec_command_sudo(Constants.VAT_BIN_NAME,
cmd_input)
if int(ret_code) != 0:
raise Exception("'{0}' failed on {1}".format(cmd_input,
node['host']))
|
