summaryrefslogtreecommitdiff
path: root/src/conf_mode/vpp.py
blob: d541e52ba7c4dc0d24812b5e75640c23a89d890e (plain)
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
#!/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 vyos.config import Config
from vyos.configdict import dict_merge
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

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):
    from vyos.util import rc_cmd
    rc, out = rc_cmd(f'ethtool -i {iface}')
    if rc == 0:
        output_lines = out.split('\n')
        for line in output_lines:
            if 'bus-info' in line:
                return line.split(None, 1)[1].strip()


def get_config(config=None):
    if config:
        conf = config
    else:
        conf = Config()

    base = ['vpp']
    base_ethernet = ['interfaces', 'ethernet']
    if not conf.exists(base):
        return None

    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)

    return config


def verify(config):
    # bail out early - looks like removal from running config
    if not 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:
        # 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:
        print(f'systemctl stop {service_name}.service')
        call(f'systemctl stop {service_name}.service')
        return
    else:
        print(f'systemctl restart {service_name}.service')
        call(f'systemctl restart {service_name}.service')

    call('systemctl daemon-reload')

    call('sudo sysctl -w vm.nr_hugepages=4096')
    vpp_control = VPPControl()
    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)