1 files changed, 108 insertions, 0 deletions
diff --git a/python/vyos/ifconfig/l2tpv3.py b/python/vyos/ifconfig/l2tpv3.py
new file mode 100644
index 000000000..491fd24a7
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+++ b/python/vyos/ifconfig/l2tpv3.py
@@ -0,0 +1,108 @@
+# 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/>.
+
+
+import os
+
+from vyos.ifconfig.interface import Interface
+
+
+class L2TPv3If(Interface):
+    """
+    The Linux bonding driver provides a method for aggregating multiple network
+    interfaces into a single logical "bonded" interface. The behavior of the
+    bonded interfaces depends upon the mode; generally speaking, modes provide
+    either hot standby or load balancing services. Additionally, link integrity
+    monitoring may be performed.
+    """
+
+    options = Interface.options + \
+        ['tunnel_id', 'peer_tunnel_id', 'local_port', 'remote_port',
+            'encapsulation', 'local_address', 'remote_address']
+    default = {
+        'type': 'l2tp',
+    }
+
+    def __init__(self, ifname, **kargs):
+        super().__init__(ifname, **kargs)
+
+    def _create(self):
+        # create tunnel interface
+        cmd = 'ip l2tp add tunnel tunnel_id {} '.format(config['tunnel_id'])
+        cmd += 'peer_tunnel_id {} '.format(config['peer_tunnel_id'])
+        cmd += 'udp_sport {} '.format(config['local_port'])
+        cmd += 'udp_dport {} '.format(config['remote_port'])
+        cmd += 'encap {} '.format(config['encapsulation'])
+        cmd += 'local {} '.format(config['local_address'])
+        cmd += 'remote {} '.format(config['remote_address'])
+        self._cmd(cmd)
+
+        # setup session
+        cmd = 'ip l2tp add session name {} '.format(self.config['ifname'])
+        cmd += 'tunnel_id {} '.format(config['tunnel_id'])
+        cmd += 'session_id {} '.format(config['session_id'])
+        cmd += 'peer_session_id  {} '.format(config['peer_session_id'])
+        self._cmd(cmd)
+
+        # interface is always A/D down. It needs to be enabled explicitly
+        self.set_state('down')
+
+    def remove(self):
+        """
+        Remove interface from operating system. Removing the interface
+        deconfigures all assigned IP addresses.
+        Example:
+        >>> from vyos.ifconfig import L2TPv3If
+        >>> i = L2TPv3If('l2tpeth0')
+        >>> i.remove()
+        """
+
+        if os.path.exists('/sys/class/net/{}'.format(self.config['ifname'])):
+            # interface is always A/D down. It needs to be enabled explicitly
+            self.set_state('down')
+
+            if self._config['tunnel_id'] and self._config['session_id']:
+                cmd = 'ip l2tp del session tunnel_id {} '.format(
+                    self._config['tunnel_id'])
+                cmd += 'session_id {} '.format(self._config['session_id'])
+                self._cmd(cmd)
+
+            if self._config['tunnel_id']:
+                cmd = 'ip l2tp del tunnel tunnel_id {} '.format(
+                    self._config['tunnel_id'])
+                self._cmd(cmd)
+
+    @staticmethod
+    def get_config():
+        """
+        L2TPv3 interfaces require a configuration when they are added using
+        iproute2. This static method will provide the configuration dictionary
+        used by this class.
+
+        Example:
+        >> dict = L2TPv3If().get_config()
+        """
+        config = {
+            'peer_tunnel_id': '',
+            'local_port': 0,
+            'remote_port': 0,
+            'encapsulation': 'udp',
+            'local_address': '',
+            'remote_address': '',
+            'session_id': '',
+            'tunnel_id': '',
+            'peer_session_id': ''
+        }
+        return config