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
|
# 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.
"""Interface util library"""
from time import time, sleep
from robot.api import logger
from resources.libraries.python.ssh import exec_cmd_no_error
from resources.libraries.python.topology import NodeType, Topology
from resources.libraries.python.VatExecutor import VatExecutor, VatTerminal
class InterfaceUtil(object):
"""General utilities for managing interfaces"""
@staticmethod
def set_interface_state(node, interface, state):
"""Set interface state on a node.
Function can be used for DUTs as well as for TGs.
:param node: node where the interface is
:param interface: interface name
:param state: one of 'up' or 'down'
:type node: dict
:type interface: str
:type state: str
:return: nothing
"""
if node['type'] == NodeType.DUT:
if state == 'up':
state = 'admin-up'
elif state == 'down':
state = 'admin-down'
else:
raise ValueError('Unexpected interface state: {}'.format(state))
sw_if_index = Topology.get_interface_sw_index(node, interface)
VatExecutor.cmd_from_template(node, 'set_if_state.vat',
sw_if_index=sw_if_index, state=state)
elif node['type'] == NodeType.TG:
cmd = 'ip link set {} {}'.format(interface, state)
exec_cmd_no_error(node, cmd, sudo=True)
else:
raise Exception('Node {} has unknown NodeType: "{}"'.
format(node['host'], node['type']))
@staticmethod
def set_interface_ethernet_mtu(node, interface, mtu):
"""Set Ethernet MTU for specified interface.
Function can be used only for TGs.
:param node: node where the interface is
:param interface: interface name
:param mtu: MTU to set
:type node: dict
:type interface: str
:type mtu: int
:return: nothing
"""
if node['type'] == NodeType.DUT:
ValueError('Node {}: Setting Ethernet MTU for interface '
'on DUT nodes not supported', node['host'])
elif node['type'] == NodeType.TG:
cmd = 'ip link set {} mtu {}'.format(interface, mtu)
exec_cmd_no_error(node, cmd, sudo=True)
else:
raise ValueError('Node {} has unknown NodeType: "{}"'.
format(node['host'], node['type']))
@staticmethod
def set_default_ethernet_mtu_on_all_interfaces_on_node(node):
"""Set default Ethernet MTU on all interfaces on node.
Function can be used only for TGs.
:param node: node where to set default MTU
:type node: dict
:return: nothing
"""
for ifc in node['interfaces'].values():
InterfaceUtil.set_interface_ethernet_mtu(node, ifc['name'], 1500)
@staticmethod
def vpp_node_interfaces_ready_wait(node, timeout=10):
"""Wait until all interfaces with admin-up are in link-up state.
:param node: Node to wait on.
:param timeout: Waiting timeout in seconds (optional, default 10s)
:type node: dict
:type timeout: int
:raises: RuntimeError if the timeout period value has elapsed.
"""
if_ready = False
with VatTerminal(node) as vat:
not_ready = []
start = time()
while not if_ready:
out = vat.vat_terminal_exec_cmd('sw_interface_dump')
if time() - start > timeout:
for interface in out:
if interface.get('admin_up_down') == 1:
if interface.get('link_up_down') != 1:
logger.debug('{0} link-down'.format(
interface.get('interface_name')))
raise RuntimeError('timeout, not up {0}'.format(not_ready))
not_ready = []
for interface in out:
if interface.get('admin_up_down') == 1:
if interface.get('link_up_down') != 1:
not_ready.append(interface.get('interface_name'))
if not not_ready:
if_ready = True
else:
logger.debug('Interfaces still in link-down state: {0}, '
'waiting...'.format(not_ready))
sleep(1)
@staticmethod
def vpp_nodes_interfaces_ready_wait(nodes, timeout=10):
"""Wait until all interfaces with admin-up are in link-up state for
listed nodes.
:param nodes: List of nodes to wait on.
:param timeout: Seconds to wait per node for all interfaces to come up.
:type nodes: list
:type timeout: int
:raises: RuntimeError if the timeout period value has elapsed.
"""
for node in nodes:
InterfaceUtil.vpp_node_interfaces_ready_wait(node, timeout)
@staticmethod
def all_vpp_interfaces_ready_wait(nodes, timeout=10):
"""Wait until all interfaces with admin-up are in link-up state for all
nodes in the topology.
:param nodes: Nodes in the topology.
:param timeout: Seconds to wait per node for all interfaces to come up.
:type nodes: dict
:type timeout: int
:raises: RuntimeError if the timeout period value has elapsed.
"""
for node in nodes.values():
if node['type'] == NodeType.DUT:
InterfaceUtil.vpp_node_interfaces_ready_wait(node, timeout)
|
