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Diffstat (limited to 'src/conf_mode/interface-vxlan.py')
| -rwxr-xr-x | src/conf_mode/interface-vxlan.py | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/src/conf_mode/interface-vxlan.py b/src/conf_mode/interface-vxlan.py deleted file mode 100755 index 1097ae4d0..000000000 --- a/src/conf_mode/interface-vxlan.py +++ /dev/null @@ -1,198 +0,0 @@ -#!/usr/bin/env python3 -# -# Copyright (C) 2019 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 copy import deepcopy - -from vyos.configdict import list_diff -from vyos.config import Config -from vyos.ifconfig import VXLANIf, Interface -from vyos.interfaces import get_type_of_interface -from vyos import ConfigError -from netifaces import interfaces - -default_config_data = { - 'address': [], - 'deleted': False, - 'description': '', - 'disable': False, - 'group': '', - 'intf': '', - 'ip_arp_cache_tmo': 30, - 'ip_proxy_arp': 0, - 'link': '', - 'mtu': 1450, - 'remote': '', - 'remote_port': 8472 # The Linux implementation of VXLAN pre-dates - # the IANA's selection of a standard destination port -} - -def get_config(): - vxlan = deepcopy(default_config_data) - conf = Config() - - # determine tagNode instance - try: - vxlan['intf'] = os.environ['VYOS_TAGNODE_VALUE'] - except KeyError as E: - print("Interface not specified") - - # Check if interface has been removed - if not conf.exists('interfaces vxlan ' + vxlan['intf']): - vxlan['deleted'] = True - return vxlan - - # set new configuration level - conf.set_level('interfaces vxlan ' + vxlan['intf']) - - # retrieve configured interface addresses - if conf.exists('address'): - vxlan['address'] = conf.return_values('address') - - # retrieve interface description - if conf.exists('description'): - vxlan['description'] = conf.return_value('description') - - # Disable this interface - if conf.exists('disable'): - vxlan['disable'] = True - - # VXLAN multicast grou - if conf.exists('group'): - vxlan['group'] = conf.return_value('group') - - # ARP cache entry timeout in seconds - if conf.exists('ip arp-cache-timeout'): - vxlan['ip_arp_cache_tmo'] = int(conf.return_value('ip arp-cache-timeout')) - - # Enable proxy-arp on this interface - if conf.exists('ip enable-proxy-arp'): - vxlan['ip_proxy_arp'] = 1 - - # VXLAN underlay interface - if conf.exists('link'): - vxlan['link'] = conf.return_value('link') - - # Maximum Transmission Unit (MTU) - if conf.exists('mtu'): - vxlan['mtu'] = int(conf.return_value('mtu')) - - # Remote address of VXLAN tunnel - if conf.exists('remote'): - vxlan['remote'] = conf.return_value('remote') - - # Remote port of VXLAN tunnel - if conf.exists('port'): - vxlan['remote_port'] = int(conf.return_value('port')) - - # Virtual Network Identifier - if conf.exists('vni'): - vxlan['vni'] = conf.return_value('vni') - - return vxlan - - -def verify(vxlan): - if vxlan['deleted']: - # bail out early - return None - - if vxlan['mtu'] < 1500: - print('WARNING: RFC7348 recommends VXLAN tunnels preserve a 1500 byte MTU') - - if vxlan['group'] and not vxlan['link']: - raise ConfigError('Multicast VXLAN requires an underlaying interface ') - - if not (vxlan['group'] or vxlan['remote']): - raise ConfigError('Group or remote must be configured') - - if not vxlan['vni']: - raise ConfigError('Must configure VNI for VXLAN') - - if vxlan['link']: - # VXLAN adds a 50 byte overhead - we need to check the underlaying MTU - # if our configured MTU is at least 50 bytes less - underlay_mtu = int(Interface(vxlan['link']).get_mtu()) - if underlay_mtu < (vxlan['mtu'] + 50): - raise ConfigError('VXLAN has a 50 byte overhead, underlaying device ' \ - 'MTU is to small ({})'.format(underlay_mtu)) - - return None - - -def generate(vxlan): - return None - - -def apply(vxlan): - # Check if the VXLAN interface already exists - if vxlan['intf'] in interfaces(): - v = VXLANIf(vxlan['intf']) - # VXLAN is super picky and the tunnel always needs to be recreated, - # thus we can simply always delete it first. - v.remove() - - if not vxlan['deleted']: - # VXLAN interface needs to be created on-block - # instead of passing a ton of arguments, I just use a dict - # that is managed by vyos.ifconfig - conf = deepcopy(VXLANIf.get_config()) - - # Assign VXLAN instance configuration parameters to config dict - conf['vni'] = vxlan['vni'] - conf['group'] = vxlan['group'] - conf['dev'] = vxlan['link'] - conf['remote'] = vxlan['remote'] - conf['port'] = vxlan['remote_port'] - - # Finally create the new interface - v = VXLANIf(vxlan['intf'], config=conf) - # update interface description used e.g. by SNMP - v.set_alias(vxlan['description']) - # Maximum Transfer Unit (MTU) - v.set_mtu(vxlan['mtu']) - - # configure ARP cache timeout in milliseconds - v.set_arp_cache_tmo(vxlan['ip_arp_cache_tmo']) - # Enable proxy-arp on this interface - v.set_proxy_arp(vxlan['ip_proxy_arp']) - - # Configure interface address(es) - no need to implicitly delete the - # old addresses as they have already been removed by deleting the - # interface above - for addr in vxlan['address']: - v.add_addr(addr) - - # As the bond interface is always disabled first when changing - # parameters we will only re-enable the interface if it is not - # administratively disabled - if not vxlan['disable']: - v.set_state('up') - - return None - - -if __name__ == '__main__': - try: - c = get_config() - verify(c) - generate(c) - apply(c) - except ConfigError as e: - print(e) - exit(1) |