1 files changed, 145 insertions, 0 deletions
diff --git a/src/conf_mode/vpp.py b/src/conf_mode/vpp.py
new file mode 100755
index 000000000..aa6c14e89
--- /dev/null
+++ b/src/conf_mode/vpp.py
@@ -0,0 +1,145 @@
+#!/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 vpp
+from vyos import airbag
+
+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')
+    for iface, _ in config['interface'].items():
+        # Create lcp
+        if iface not in Section.interfaces():
+            vpp.lcp_create_host_interface(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)