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vpp_interfaces_ipip.py
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vpp_interfaces_ipip.py
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#!/usr/bin/env python3
#
# Copyright (C) VyOS Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# 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, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
from vyos import ConfigError
from vyos.config import Config
from vyos.configdict import get_interface_dict
from vyos.configdep import set_dependents, call_dependents
from vyos.utils.process import is_systemd_service_active
from vyos.ifconfig.vpp import VPPIPIPInterface
from vyos.vpp.config_deps import deps_xconnect_dict
from vyos.vpp.config_verify import (
verify_vpp_remove_xconnect_interface,
verify_vpp_tunnel_source_address,
)
from vyos.vpp.utils import cli_ethernet_with_vifs_ifaces
def get_config(config=None) -> dict:
"""Get IPIP interface configuration
Args:
config (vyos.config.Config, optional): The VyOS configuration dictionary
Returns:
dict: IPIP interface configuration
"""
if config:
conf = config
else:
conf = Config()
base = ['interfaces', 'vpp', 'ipip']
ifname, config = get_interface_dict(conf, base)
if not conf.exists(['vpp']) and not conf.exists(base):
config['remove_vpp'] = True
return config
# list of all Ethernet interfaces with vifs
config['vpp_ether_vif_ifaces'] = cli_ethernet_with_vifs_ifaces(conf)
# Dependency
config['xconn_members'] = deps_xconnect_dict(conf)
if ifname in config['xconn_members']:
for xconn_iface in config['xconn_members'][ifname]:
set_dependents('vpp_interfaces_xconnect', conf, xconn_iface)
# Get 'vpp settings' config with default values
config['vpp_settings'] = conf.get_config_dict(
['vpp', 'settings'],
key_mangling=('-', '_'),
get_first_key=True,
no_tag_node_value_mangle=True,
)
return config
def verify(config):
# No need to verify anything if vpp is removed
if 'remove_vpp' in config:
return None
verify_vpp_remove_xconnect_interface(config)
# config removed
if 'deleted' in config:
return None
if not is_systemd_service_active('vpp.service'):
raise ConfigError(
'Cannot configure VPP ipip interface: vpp.service is not running'
)
# source-address and remote are mandatory options
required_keys = {'source_address', 'remote'}
if not all(key in config for key in required_keys):
missing_keys = required_keys - set(config.keys())
raise ConfigError(
f"Required options are missing: {', '.join(missing_keys).replace('_', '-')}"
)
# verify source address and remote address
verify_vpp_tunnel_source_address(config)
if config.get('source_address') == config.get('remote'):
raise ConfigError('Remote address must not be the same as source address')
def generate(config):
pass
def apply(config):
if 'remove_vpp' in config:
return None
ifname = config.get('ifname')
# Delete interface
ipip = VPPIPIPInterface(ifname, config)
ipip.remove()
if 'deleted' in config:
return None
ipip.update(config)
call_dependents()
return None
if __name__ == '__main__':
try:
c = get_config()
verify(c)
generate(c)
apply(c)
except ConfigError as e:
print(e)
exit(1)

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