# Copyright 2019-2021 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 import Interface from vyos.util import dict_search @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/ """ iftype = 'geneve' definition = { **Interface.definition, **{ 'section': 'geneve', 'prefixes': ['gnv', ], 'bridgeable': True, } } def _create(self): # This table represents a mapping from VyOS internal config dict to # arguments used by iproute2. For more information please refer to: # - https://man7.org/linux/man-pages/man8/ip-link.8.html mapping = { 'parameters.ip.dont_fragment': 'df set', 'parameters.ip.tos' : 'tos', 'parameters.ip.ttl' : 'ttl', 'parameters.ipv6.flowlabel' : 'flowlabel', } cmd = 'ip link add name {ifname} type {type} id {vni} remote {remote}' for vyos_key, iproute2_key in mapping.items(): # dict_search will return an empty dict "{}" for valueless nodes like # "parameters.nolearning" - thus we need to test the nodes existence # by using isinstance() tmp = dict_search(vyos_key, self.config) if isinstance(tmp, dict): cmd += f' {iproute2_key}' elif tmp != None: cmd += f' {iproute2_key} {tmp}' self._cmd(cmd.format(**self.config)) # interface is always A/D down. It needs to be enabled explicitly self.set_admin_state('down')