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
|
# This file is part of curtin. See LICENSE file for copyright and license info.
from .releases import base_vm_classes as relbase
from .releases import centos_base_vm_classes as centos_relbase
from .test_network_ipv6 import TestNetworkIPV6Abs
import textwrap
import unittest
NETWORKD_NO_AUTO_RAISE_MTU = (
"networkd does not support auto raising iface mtu")
class TestNetworkMtuAbs(TestNetworkIPV6Abs):
""" Test that the mtu of the ipv6 address is properly set.
1. devices default MTU to 1500, test if mtu under
inet6 stanza can be set separately from device
mtu (works newer ifupdown), check via sysctl.
2. if ipv6 mtu is > than underlying device, this fails
and is unnoticed, ifupdown/hook should fix by changing
mtu of underlying device to the same size as the ipv6
mtu. This only works in ifupdown renderers.
3. order of the v4 vs. v6 stanzas could affect final mtu
ipv6 first, then ipv4 with mtu.
"""
conf_file = "examples/tests/network_mtu.yaml"
extra_collect_scripts = TestNetworkIPV6Abs.extra_collect_scripts + [
textwrap.dedent("""
cd OUTPUT_COLLECT_D
# restart networkd after all interfaces are up
# systemctl restart systemd-networkd.service
[ -e /usr/local/bin/capture-mtu ] && /usr/local/bin/capture-mtu
echo "collecting mtu now"
proc_v6="/proc/sys/net/ipv6/conf"
for f in `seq 0 7`; do
echo "WARK: checking interface${f} MTU values"
cat /sys/class/net/interface${f}/mtu |tee -a interface${f}_dev_mtu;
cat $proc_v6/interface${f}/mtu |tee -a interface${f}_ipv6_mtu;
done
if [ -e /var/log/upstart ]; then
cp -a /var/log/upstart ./var_log_upstart
fi
exit 0
""")]
def _load_mtu_data(self, ifname):
""" load mtu related files by interface name.
returns a dictionary with the follwing
keys: 'device', and 'ipv6'. """
mtu_fn = {
'device': "%s_dev_mtu" % ifname,
'ipv6': "%s_ipv6_mtu" % ifname,
}
mtu_val = {}
for fnk in mtu_fn.keys():
mtu_val.update({fnk: int(self.load_collect_file(mtu_fn[fnk]))})
return mtu_val
def _skip_if_not_ifupdown(self, reason):
if self._network_renderer() != "ifupdown":
raise unittest.SkipTest(reason)
def _check_subnet_mtu(self, subnet, iface):
mtu_data = self._load_mtu_data(iface['name'])
print('subnet:%s' % subnet)
print('mtu_data:%s' % mtu_data)
# ipv4 address mtu changes *device* mtu
if '.' in subnet['address']:
print('subnet_mtu=%s device_mtu=%s' % (int(subnet['mtu']),
int(mtu_data['device'])))
self.assertEqual(int(subnet['mtu']),
int(mtu_data['device']))
# ipv6 address mtu changes *protocol* mtu
elif ':' in subnet['address']:
print('subnet_mtu=%s ipv6_mtu=%s' % (int(subnet['mtu']),
int(mtu_data['device'])))
self.assertEqual(int(subnet['mtu']),
int(mtu_data['ipv6']))
def _check_iface_subnets(self, ifname):
network_state = self.get_network_state()
interfaces = network_state.get('interfaces')
iface = interfaces.get(ifname)
subnets = iface.get('subnets')
print('iface=%s subnets=%s' % (iface['name'], subnets))
for subnet in subnets:
if 'mtu' in subnet:
self._check_subnet_mtu(subnet, iface)
def _disabled_ipv4_and_ipv6_mtu_all(self):
""" we don't pass all tests, skip for now """
network_state = self.get_network_state()
interfaces = network_state.get('interfaces')
for iface in interfaces.values():
subnets = iface.get('subnets', {})
if subnets:
for index, subnet in zip(range(0, len(subnets)), subnets):
print("iface=%s subnet=%s" % (iface['name'], subnet))
if 'mtu' in subnet:
self._check_subnet_mtu(subnet, iface)
def test_ipv6_mtu_smaller_than_ipv4_non_default(self):
self._check_iface_subnets('interface0')
def test_ipv6_mtu_equal_ipv4_non_default(self):
self._check_iface_subnets('interface1')
def test_ipv6_mtu_higher_than_default_no_ipv4_mtu(self):
self._skip_if_not_ifupdown(NETWORKD_NO_AUTO_RAISE_MTU)
self._check_iface_subnets('interface2')
def test_ipv6_mtu_higher_than_default_no_ipv4_iface_up(self):
self._skip_if_not_ifupdown(NETWORKD_NO_AUTO_RAISE_MTU)
self._check_iface_subnets('interface3')
def test_ipv6_mtu_smaller_than_ipv4_v6_iface_first(self):
self._check_iface_subnets('interface4')
def test_ipv6_mtu_equal_ipv4_non_default_v6_iface_first(self):
self._check_iface_subnets('interface5')
def test_ipv6_mtu_higher_than_default_no_ipv4_mtu_v6_iface_first(self):
self._skip_if_not_ifupdown(NETWORKD_NO_AUTO_RAISE_MTU)
self._check_iface_subnets('interface6')
def test_ipv6_mtu_higher_than_default_no_ipv4_iface_v6_iface_first(self):
self._skip_if_not_ifupdown(NETWORKD_NO_AUTO_RAISE_MTU)
self._check_iface_subnets('interface7')
class TestNetworkMtuNetworkdAbs(TestNetworkMtuAbs):
conf_file = "examples/tests/network_mtu_networkd.yaml"
class CentosTestNetworkMtuAbs(TestNetworkMtuAbs):
conf_file = "examples/tests/network_mtu.yaml"
extra_collect_scripts = TestNetworkMtuAbs.extra_collect_scripts + [
textwrap.dedent("""
cd OUTPUT_COLLECT_D
cp -a /etc/sysconfig/network-scripts .
cp -a /var/log/cloud-init* .
cp -a /var/lib/cloud ./var_lib_cloud
cp -a /run/cloud-init ./run_cloud-init
exit 0
""")]
def test_etc_network_interfaces(self):
pass
def test_etc_resolvconf(self):
pass
@unittest.skip("Sysconfig does not support mixed v4/v6 MTU: LP:#1706973")
def test_ip_output(self):
pass
@unittest.skip("Sysconfig does not support mixed v4/v6 MTU: LP:#1706973")
def test_ipv6_mtu_smaller_than_ipv4_v6_iface_first(self):
pass
@unittest.skip("Sysconfig does not support mixed v4/v6 MTU: LP:#1706973")
def test_ipv6_mtu_smaller_than_ipv4_non_default(self):
pass
@unittest.skip("Sysconfig does not support mixed v4/v6 MTU: LP:#1706973")
def test_ipv6_mtu_higher_than_default_no_ipv4_iface_up(self):
pass
@unittest.skip("Sysconfig does not support mixed v4/v6 MTU: LP:#1706973")
def test_ipv6_mtu_higher_than_default_no_ipv4_iface_v6_iface_first(self):
pass
class TestNetworkMtu(relbase.xenial, TestNetworkMtuAbs):
__test__ = True
class BionicTestNetworkMtu(relbase.bionic, TestNetworkMtuNetworkdAbs):
__test__ = True
class FocalTestNetworkMtu(relbase.focal, TestNetworkMtuNetworkdAbs):
__test__ = True
class JammyTestNetworkMtu(relbase.jammy, TestNetworkMtuNetworkdAbs):
__test__ = True
class Centos70TestNetworkMtu(centos_relbase.centos70_xenial,
CentosTestNetworkMtuAbs):
__test__ = True
# vi: ts=4 expandtab syntax=python
|
