#!/usr/bin/env python3 # # Copyright (C) 2019-2022 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/>. import os from sys import exit from netifaces import interfaces from vyos.config import Config from vyos.configdict import get_interface_dict from vyos.configdict import leaf_node_changed from vyos.configdict import is_node_changed from vyos.configverify import verify_address from vyos.configverify import verify_mtu_ipv6 from vyos.configverify import verify_bridge_delete from vyos.configverify import verify_mirror_redirect from vyos.ifconfig import GeneveIf from vyos import ConfigError from vyos import airbag airbag.enable() def get_config(config=None): """ Retrive CLI config as dictionary. Dictionary can never be empty, as at least the interface name will be added or a deleted flag """ if config: conf = config else: conf = Config() base = ['interfaces', 'geneve'] ifname, geneve = get_interface_dict(conf, base) # GENEVE interfaces are picky and require recreation if certain parameters # change. But a GENEVE interface should - of course - not be re-created if # it's description or IP address is adjusted. Feels somehow logic doesn't it? for cli_option in ['remote', 'vni']: if leaf_node_changed(conf, base + [ifname, cli_option]): geneve.update({'rebuild_required': {}}) if is_node_changed(conf, base + [ifname, 'parameters']): geneve.update({'rebuild_required': {}}) return geneve def verify(geneve): if 'deleted' in geneve: verify_bridge_delete(geneve) return None verify_mtu_ipv6(geneve) verify_address(geneve) verify_mirror_redirect(geneve) if 'remote' not in geneve: raise ConfigError('Remote side must be configured') if 'vni' not in geneve: raise ConfigError('VNI must be configured') return None def generate(geneve): return None def apply(geneve): # Check if GENEVE interface already exists if 'rebuild_required' in geneve or 'delete' in geneve: if geneve['ifname'] in interfaces(): g = GeneveIf(geneve['ifname']) # GENEVE is super picky and the tunnel always needs to be recreated, # thus we can simply always delete it first. g.remove() if 'deleted' not in geneve: # Finally create the new interface g = GeneveIf(**geneve) g.update(geneve) return None if __name__ == '__main__': try: c = get_config() verify(c) generate(c) apply(c) except ConfigError as e: print(e) exit(1)