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# Copyright 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.interface import Interface
from vyos.util import dict_search
@Interface.register
class VTIIf(Interface):
iftype = 'vti'
definition = {
**Interface.definition,
**{
'section': 'vti',
'prefixes': ['vti', ],
},
}
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
# - https://man7.org/linux/man-pages/man8/ip-tunnel.8.html
mapping = {
'source_interface' : 'dev',
}
if_id = self.ifname.lstrip('vti')
cmd = f'ip link add {self.ifname} type xfrm if_id {if_id}'
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))
self.set_interface('admin_state', 'down')
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