Serious refactoring of TUN/TAP and tunnel code. Linux udp/gre tunnels not yet functional

[nepi.git] / src / nepi / resources / planetlab / ns3 / tuntapfdlink.py

diff --git a/src/nepi/resources/planetlab/ns3/tuntapfdlink.py b/src/nepi/resources/planetlab/ns3/tuntapfdlink.py
new file mode 100644 (file)
index 0000000..3f264a5
--- /dev/null
+++ b/src/nepi/resources/planetlab/ns3/tuntapfdlink.py
@@ -0,0 +1,93 @@
+#
+#    NEPI, a framework to manage network experiments
+#    Copyright (C) 2014 INRIA
+#
+#    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 3 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, see <http://www.gnu.org/licenses/>.
+#
+# Author: Alina Quereilhac <alina.quereilhac@inria.fr>
+
+from nepi.execution.resource import ResourceState, clsinit_copy
+from nepi.resources.linux.ns3.tuntapfdlink import LinuxTunTapFdLink
+
+import base64
+import fcntl
+import os
+import socket
+import struct
+
+@clsinit_copy
+class PlanetlabTunTapFdLink(LinuxTunTapFdLink):
+    """ Interconnects a TAP or TUN PlanetLab device to a FdNetDevice
+    """
+    _rtype = "planetlab::ns3::TunTapFdLink"
+
+    def __init__(self, ec, guid):
+        super(PlanetlabTunTapFdLink, self).__init__(ec, guid)
+
+    @property
+    def fdnetdevice(self):
+        if not self._fdnetdevice:
+            from nepi.resources.ns3.ns3fdnetdevice import NS3BaseFdNetDevice
+            devices = self.get_connected(NS3BaseFdNetDevice.get_rtype())
+            if not devices or len(devices) != 1: 
+                msg = "planetlab::ns3::TunTapFdLink must be connected to exactly one FdNetDevice"
+                self.error(msg)
+                raise RuntimeError, msg
+
+            self._fdnetdevice = devices[0]
+
+            # Set PI headers on
+            self._fdnetdevice.set("EncapsulationMode", "DixPi")
+        
+            simu = self._fdnetdevice.simulation
+            from nepi.resources.planetlab.node import PlanetlabNode
+            nodes = simu.get_connected(PlanetlabNode.get_rtype())
+            self._fd_node = nodes[0]
+        
+        return self._fdnetdevice
+
+    @property
+    def tap(self):
+        if not self._tap:
+            from nepi.resources.planetlab.tap import PlanetlabTap
+            devices = self.get_connected(PlanetlabTap.get_rtype())
+
+            if not devices or len(devices) != 1: 
+                msg = "planetlab::ns3::TunTapFdLink must be connected to exactly one PlanetlabTap"
+                self.error(msg)
+                raise RuntimeError, msg
+
+            self._tap = devices[0]
+        
+        return self._tap
+
+    def upload_sources(self):
+        scripts = []
+
+        # vif-passfd python script
+        pl_vif_passfd = os.path.join(os.path.dirname(__file__), 
+                "..", "..",
+                "linux",
+                "scripts",
+                "linux-tap-passfd.py")
+
+        scripts.append(pl_vif_passfd)
+        
+        # Upload scripts
+        scripts = ";".join(scripts)
+
+        self.node.upload(scripts,
+                os.path.join(self.node.src_dir),
+                overwrite = False)
+