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
|
#!/usr/bin/env python3
#
# Copyright (C) 2023 VyOS maintainers and contributors
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 or later as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from pathlib import Path
from re import search as re_search, MULTILINE as re_M
from vyos.config import Config
from vyos.configdict import dict_merge
from vyos.configdict import node_changed
from vyos.ifconfig import Section
from vyos.ifconfig import EthernetIf
from vyos.ifconfig import interface
from vyos.util import call
from vyos.util import rc_cmd
from vyos.template import render
from vyos.xml import defaults
from vyos import ConfigError
from vyos import airbag
from vyos.vpp import VPPControl
from vyos.vpp import HostControl
airbag.enable()
service_name = 'vpp'
service_conf = Path(f'/run/vpp/{service_name}.conf')
systemd_override = '/run/systemd/system/vpp.service.d/10-override.conf'
def _get_pci_address_by_interface(iface) -> str:
from vyos.util import rc_cmd
rc, out = rc_cmd(f'ethtool -i {iface}')
# if ethtool command was successful
if rc == 0 and out:
regex_filter = r'^bus-info: (?P<address>\w+:\w+:\w+\.\w+)$'
re_obj = re_search(regex_filter, out, re_M)
# if bus-info with PCI address found
if re_obj:
address = re_obj.groupdict().get('address', '')
return address
# use VPP - maybe interface already attached to it
vpp_control = VPPControl(attempts=20, interval=500)
pci_addr = vpp_control.get_pci_addr(iface)
if pci_addr:
return pci_addr
# raise error if PCI address was not found
raise ConfigError(f'Cannot find PCI address for interface {iface}')
def get_config(config=None):
if config:
conf = config
else:
conf = Config()
base = ['vpp']
base_ethernet = ['interfaces', 'ethernet']
# find interfaces removed from VPP
removed_ifaces = []
tmp = node_changed(conf, base + ['interface'])
if tmp:
for removed_iface in tmp:
pci_address: str = _get_pci_address_by_interface(removed_iface)
removed_ifaces.append({
'iface_name': removed_iface,
'iface_pci_addr': pci_address
})
if not conf.exists(base):
return {'removed_ifaces': removed_ifaces}
config = conf.get_config_dict(base,
get_first_key=True,
key_mangling=('-', '_'),
no_tag_node_value_mangle=True)
# We have gathered the dict representation of the CLI, but there are default
# options which we need to update into the dictionary retrived.
default_values = defaults(base)
if 'interface' in default_values:
del default_values['interface']
config = dict_merge(default_values, config)
if 'interface' in config:
for iface, iface_config in config['interface'].items():
default_values_iface = defaults(base + ['interface'])
config['interface'][iface] = dict_merge(default_values_iface, config['interface'][iface])
# Get PCI address auto
for iface, iface_config in config['interface'].items():
if iface_config['pci'] == 'auto':
config['interface'][iface]['pci'] = _get_pci_address_by_interface(iface)
config['other_interfaces'] = conf.get_config_dict(base_ethernet, key_mangling=('-', '_'),
get_first_key=True, no_tag_node_value_mangle=True)
if removed_ifaces:
config['removed_ifaces'] = removed_ifaces
return config
def verify(config):
# bail out early - looks like removal from running config
if not config or (len(config) == 1 and 'removed_ifaces' in config):
return None
if 'interface' not in config:
raise ConfigError(f'"interface" is required but not set!')
if 'cpu' in config:
if 'corelist_workers' in config['cpu'] and 'main_core' not in config['cpu']:
raise ConfigError(f'"cpu main-core" is required but not set!')
def generate(config):
if not config or (len(config) == 1 and 'removed_ifaces' in config):
# Remove old config and return
service_conf.unlink(missing_ok=True)
return None
render(service_conf, 'vpp/startup.conf.j2', config)
render(systemd_override, 'vpp/override.conf.j2', config)
return None
def apply(config):
if not config or (len(config) == 1 and 'removed_ifaces' in config):
call(f'systemctl stop {service_name}.service')
else:
call('systemctl daemon-reload')
call(f'systemctl restart {service_name}.service')
# Initialize interfaces removed from VPP
for iface in config.get('removed_ifaces', []):
host_control = HostControl()
# rescan PCI to use a proper driver
host_control.pci_rescan(iface['iface_pci_addr'])
# rename to the proper name
iface_new_name: str = host_control.get_eth_name(iface['iface_pci_addr'])
host_control.rename_iface(iface_new_name, iface['iface_name'])
if 'interface' in config:
# connect to VPP
# must be performed multiple attempts because API is not available
# immediately after the service restart
vpp_control = VPPControl(attempts=20, interval=500)
for iface, _ in config['interface'].items():
# Create lcp
if iface not in Section.interfaces():
vpp_control.lcp_pair_add(iface, iface)
# update interface config
#e = EthernetIf(iface)
#e.update(config['other_interfaces'][iface])
if __name__ == '__main__':
try:
c = get_config()
verify(c)
generate(c)
apply(c)
except ConfigError as e:
print(e)
exit(1)
|
