# Copyright 2019 VyOS maintainers and contributors <maintainers@vyos.io> # # This library is free software; you can redistribute it and/or # modify it under the terms of the GNU Lesser General Public # License as published by the Free Software Foundation; either # version 2.1 of the License, or (at your option) any later version. # # This library 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 # Lesser General Public License for more details. # # You should have received a copy of the GNU Lesser General Public # License along with this library. If not, see <http://www.gnu.org/licenses/>. from vyos.ifconfig.interface import Interface @Interface.register class GeneveIf(Interface): """ Geneve: Generic Network Virtualization Encapsulation For more information please refer to: https://tools.ietf.org/html/draft-gross-geneve-00 https://www.redhat.com/en/blog/what-geneve https://developers.redhat.com/blog/2019/05/17/an-introduction-to-linux-virtual-interfaces-tunnels/#geneve https://lwn.net/Articles/644938/ """ default = { 'type': 'geneve', 'vni': 0, 'remote': '', } options = Interface.options + \ ['vni', 'remote'] definition = { **Interface.definition, **{ 'section': 'geneve', 'prefixes': ['gnv', ], 'bridgeable': True, } } def _create(self): cmd = 'ip link add name {ifname} type geneve id {vni} remote {remote}'.format(**self.config) self._cmd(cmd) # interface is always A/D down. It needs to be enabled explicitly self.set_admin_state('down') def update(self, config): """ General helper function which works on a dictionary retrived by get_config_dict(). It's main intention is to consolidate the scattered interface setup code and provide a single point of entry when workin on any interface. """ # call base class first super().update(config) # Enable/Disable of an interface must always be done at the end of the # derived class to make use of the ref-counting set_admin_state() # function. We will only enable the interface if 'up' was called as # often as 'down'. This is required by some interface implementations # as certain parameters can only be changed when the interface is # in admin-down state. This ensures the link does not flap during # reconfiguration. state = 'down' if 'disable' in config else 'up' self.set_admin_state(state)