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+  <h1>Source code for nepi.resources.linux.ns3.tuntapfdlink</h1><div class="highlight"><pre>
+<span class="c">#</span>
+<span class="c">#    NEPI, a framework to manage network experiments</span>
+<span class="c">#    Copyright (C) 2014 INRIA</span>
+<span class="c">#</span>
+<span class="c">#    This program is free software: you can redistribute it and/or modify</span>
+<span class="c">#    it under the terms of the GNU General Public License version 2 as</span>
+<span class="c">#    published by the Free Software Foundation;</span>
+<span class="c">#</span>
+<span class="c">#    This program is distributed in the hope that it will be useful,</span>
+<span class="c">#    but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
+<span class="c">#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
+<span class="c">#    GNU General Public License for more details.</span>
+<span class="c">#</span>
+<span class="c">#    You should have received a copy of the GNU General Public License</span>
+<span class="c">#    along with this program.  If not, see &lt;http://www.gnu.org/licenses/&gt;.</span>
+<span class="c">#</span>
+<span class="c"># Author: Alina Quereilhac &lt;alina.quereilhac@inria.fr&gt;</span>
+<span class="kn">from</span> <span class="nn">nepi.execution.resource</span> <span class="kn">import</span> <span class="n">ResourceState</span><span class="p">,</span> <span class="n">clsinit_copy</span>
+<span class="kn">from</span> <span class="nn">nepi.resources.linux.application</span> <span class="kn">import</span> <span class="n">LinuxApplication</span>
+
+<span class="kn">import</span> <span class="nn">base64</span>
+<span class="kn">import</span> <span class="nn">fcntl</span>
+<span class="kn">import</span> <span class="nn">os</span>
+<span class="kn">import</span> <span class="nn">socket</span>
+<span class="kn">import</span> <span class="nn">struct</span>
+
+<span class="nd">@clsinit_copy</span>
+<div class="viewcode-block" id="LinuxTunTapFdLink"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.tuntapfdlink.LinuxTunTapFdLink">[docs]</a><span class="k">class</span> <span class="nc">LinuxTunTapFdLink</span><span class="p">(</span><span class="n">LinuxApplication</span><span class="p">):</span>
+    <span class="sd">&quot;&quot;&quot; Interconnects a TAP or TUN Linux device to a FdNetDevice</span>
+<span class="sd">    &quot;&quot;&quot;</span>
+    <span class="n">_rtype</span> <span class="o">=</span> <span class="s">&quot;linux::ns3::TunTapFdLink&quot;</span>
+
+    <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">ec</span><span class="p">,</span> <span class="n">guid</span><span class="p">):</span>
+        <span class="nb">super</span><span class="p">(</span><span class="n">LinuxTunTapFdLink</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">__init__</span><span class="p">(</span><span class="n">ec</span><span class="p">,</span> <span class="n">guid</span><span class="p">)</span>
+        <span class="bp">self</span><span class="o">.</span><span class="n">_tap</span> <span class="o">=</span> <span class="bp">None</span>
+        <span class="bp">self</span><span class="o">.</span><span class="n">_fdnetdevice</span> <span class="o">=</span> <span class="bp">None</span>
+        <span class="bp">self</span><span class="o">.</span><span class="n">_fd_node</span> <span class="o">=</span> <span class="bp">None</span>
+        <span class="bp">self</span><span class="o">.</span><span class="n">send_address</span> <span class="o">=</span> <span class="bp">None</span>
+        <span class="bp">self</span><span class="o">.</span><span class="n">_home</span> <span class="o">=</span> <span class="s">&quot;tuntap-link-</span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">guid</span>
+
+    <span class="nd">@property</span>
+<div class="viewcode-block" id="LinuxTunTapFdLink.fdnetdevice"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.tuntapfdlink.LinuxTunTapFdLink.fdnetdevice">[docs]</a>    <span class="k">def</span> <span class="nf">fdnetdevice</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+        <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_fdnetdevice</span><span class="p">:</span>
+            <span class="kn">from</span> <span class="nn">nepi.resources.ns3.ns3fdnetdevice</span> <span class="kn">import</span> <span class="n">NS3BaseFdNetDevice</span>
+            <span class="n">devices</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_connected</span><span class="p">(</span><span class="n">NS3BaseFdNetDevice</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">())</span>
+            <span class="k">if</span> <span class="ow">not</span> <span class="n">devices</span> <span class="ow">or</span> <span class="nb">len</span><span class="p">(</span><span class="n">devices</span><span class="p">)</span> <span class="o">!=</span> <span class="mi">1</span><span class="p">:</span> 
+                <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;TunTapFdLink must be connected to exactly one FdNetDevice&quot;</span>
+                <span class="bp">self</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span>
+                <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
+
+            <span class="bp">self</span><span class="o">.</span><span class="n">_fdnetdevice</span> <span class="o">=</span> <span class="n">devices</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
+        
+            <span class="n">simu</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_fdnetdevice</span><span class="o">.</span><span class="n">simulation</span>
+            <span class="kn">from</span> <span class="nn">nepi.resources.linux.node</span> <span class="kn">import</span> <span class="n">LinuxNode</span>
+            <span class="n">nodes</span> <span class="o">=</span> <span class="n">simu</span><span class="o">.</span><span class="n">get_connected</span><span class="p">(</span><span class="n">LinuxNode</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">())</span>
+            <span class="bp">self</span><span class="o">.</span><span class="n">_fd_node</span> <span class="o">=</span> <span class="n">nodes</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
+        
+        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_fdnetdevice</span>
+</div>
+    <span class="nd">@property</span>
+<div class="viewcode-block" id="LinuxTunTapFdLink.fdnode"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.tuntapfdlink.LinuxTunTapFdLink.fdnode">[docs]</a>    <span class="k">def</span> <span class="nf">fdnode</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_fd_node</span>
+</div>
+    <span class="nd">@property</span>
+<div class="viewcode-block" id="LinuxTunTapFdLink.tap"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.tuntapfdlink.LinuxTunTapFdLink.tap">[docs]</a>    <span class="k">def</span> <span class="nf">tap</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+        <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_tap</span><span class="p">:</span>
+            <span class="kn">from</span> <span class="nn">nepi.resources.linux.tap</span> <span class="kn">import</span> <span class="n">LinuxTap</span>
+            <span class="n">devices</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_connected</span><span class="p">(</span><span class="n">LinuxTap</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">())</span>
+            <span class="k">if</span> <span class="ow">not</span> <span class="n">devices</span> <span class="ow">or</span> <span class="nb">len</span><span class="p">(</span><span class="n">devices</span><span class="p">)</span> <span class="o">!=</span> <span class="mi">1</span><span class="p">:</span> 
+                <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;TunTapLink must be connected to exactly one Tap or Tun&quot;</span>
+                <span class="bp">self</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span>
+                <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
+
+            <span class="bp">self</span><span class="o">.</span><span class="n">_tap</span> <span class="o">=</span> <span class="n">devices</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
+        
+        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_tap</span>
+</div>
+    <span class="nd">@property</span>
+<div class="viewcode-block" id="LinuxTunTapFdLink.tapnode"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.tuntapfdlink.LinuxTunTapFdLink.tapnode">[docs]</a>    <span class="k">def</span> <span class="nf">tapnode</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">tap</span><span class="o">.</span><span class="n">node</span>
+</div>
+    <span class="nd">@property</span>
+<div class="viewcode-block" id="LinuxTunTapFdLink.node"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.tuntapfdlink.LinuxTunTapFdLink.node">[docs]</a>    <span class="k">def</span> <span class="nf">node</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">tapnode</span>
+</div>
+<div class="viewcode-block" id="LinuxTunTapFdLink.upload_sources"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.tuntapfdlink.LinuxTunTapFdLink.upload_sources">[docs]</a>    <span class="k">def</span> <span class="nf">upload_sources</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+        <span class="n">scripts</span> <span class="o">=</span> <span class="p">[]</span>
+
+        <span class="c"># vif-passfd python script</span>
+        <span class="n">linux_passfd</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">dirname</span><span class="p">(</span><span class="n">__file__</span><span class="p">),</span>
+                <span class="s">&quot;..&quot;</span><span class="p">,</span>
+                <span class="s">&quot;scripts&quot;</span><span class="p">,</span>
+                <span class="s">&quot;linux-tap-passfd.py&quot;</span><span class="p">)</span>
+
+        <span class="n">scripts</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">linux_passfd</span><span class="p">)</span>
+        
+        <span class="c"># Upload scripts</span>
+        <span class="n">scripts</span> <span class="o">=</span> <span class="s">&quot;;&quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">scripts</span><span class="p">)</span>
+
+        <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">upload</span><span class="p">(</span><span class="n">scripts</span><span class="p">,</span>
+                <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">src_dir</span><span class="p">),</span>
+                <span class="n">overwrite</span> <span class="o">=</span> <span class="bp">False</span><span class="p">)</span>
+</div>
+<div class="viewcode-block" id="LinuxTunTapFdLink.upload_start_command"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.tuntapfdlink.LinuxTunTapFdLink.upload_start_command">[docs]</a>    <span class="k">def</span> <span class="nf">upload_start_command</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">tapnode</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&quot;hostname&quot;</span><span class="p">)</span> <span class="o">!=</span> \
+                <span class="bp">self</span><span class="o">.</span><span class="n">fdnode</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&quot;hostname&quot;</span><span class="p">):</span>
+            <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;Tap and FdNetDevice are not in the same host&quot;</span>
+            <span class="bp">self</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">)</span>
+            <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
+
+        <span class="bp">self</span><span class="o">.</span><span class="n">send_address</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">fdnetdevice</span><span class="o">.</span><span class="n">recv_fd</span><span class="p">()</span>
+        <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">&quot;command&quot;</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">_start_command</span><span class="p">)</span>
+
+        <span class="n">command</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&quot;command&quot;</span><span class="p">)</span>
+
+        <span class="n">shfile</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">app_home</span><span class="p">,</span> <span class="s">&quot;start.sh&quot;</span><span class="p">)</span>
+        <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">run_and_wait</span><span class="p">(</span><span class="n">command</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">run_home</span><span class="p">,</span>
+                <span class="n">shfile</span><span class="o">=</span><span class="n">shfile</span><span class="p">,</span>
+                <span class="n">wait_run</span><span class="o">=</span><span class="bp">False</span><span class="p">,</span>
+                <span class="n">overwrite</span><span class="o">=</span><span class="bp">True</span><span class="p">)</span>
+        </div>
+<div class="viewcode-block" id="LinuxTunTapFdLink.do_deploy"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.tuntapfdlink.LinuxTunTapFdLink.do_deploy">[docs]</a>    <span class="k">def</span> <span class="nf">do_deploy</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">tap</span><span class="o">.</span><span class="n">state</span> <span class="o">&lt;</span> <span class="n">ResourceState</span><span class="o">.</span><span class="n">READY</span> <span class="ow">or</span> \
+                <span class="bp">self</span><span class="o">.</span><span class="n">fdnetdevice</span><span class="o">.</span><span class="n">state</span> <span class="o">&lt;</span> <span class="n">ResourceState</span><span class="o">.</span><span class="n">READY</span><span class="p">:</span>
+            <span class="bp">self</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s">&quot;---- RESCHEDULING DEPLOY ---- &quot;</span><span class="p">)</span>
+            <span class="bp">self</span><span class="o">.</span><span class="n">ec</span><span class="o">.</span><span class="n">schedule</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">reschedule_delay</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">deploy</span><span class="p">)</span>
+        <span class="k">else</span><span class="p">:</span>
+            <span class="bp">self</span><span class="o">.</span><span class="n">do_discover</span><span class="p">()</span>
+            <span class="bp">self</span><span class="o">.</span><span class="n">do_provision</span><span class="p">()</span>
+
+            <span class="bp">self</span><span class="o">.</span><span class="n">set_ready</span><span class="p">()</span>
+</div>
+<div class="viewcode-block" id="LinuxTunTapFdLink.do_start"><a class="viewcode-back" href="../../../../../_layout/nepi.resources.linux.ns3.html#nepi.resources.linux.ns3.tuntapfdlink.LinuxTunTapFdLink.do_start">[docs]</a>    <span class="k">def</span> <span class="nf">do_start</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">state</span> <span class="o">==</span> <span class="n">ResourceState</span><span class="o">.</span><span class="n">READY</span><span class="p">:</span>
+            <span class="n">command</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&quot;command&quot;</span><span class="p">)</span>
+            <span class="bp">self</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s">&quot;Starting command &#39;</span><span class="si">%s</span><span class="s">&#39;&quot;</span> <span class="o">%</span> <span class="n">command</span><span class="p">)</span>
+
+            <span class="bp">self</span><span class="o">.</span><span class="n">set_started</span><span class="p">()</span>
+        <span class="k">else</span><span class="p">:</span>
+            <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot; Failed to execute command &#39;</span><span class="si">%s</span><span class="s">&#39;&quot;</span> <span class="o">%</span> <span class="n">command</span>
+            <span class="bp">self</span><span class="o">.</span><span class="n">error</span><span class="p">(</span><span class="n">msg</span><span class="p">,</span> <span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">)</span>
+            <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
+</div>
+    <span class="nd">@property</span>
+    <span class="k">def</span> <span class="nf">_start_command</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+        <span class="n">address</span> <span class="o">=</span> <span class="n">base64</span><span class="o">.</span><span class="n">b64encode</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">send_address</span><span class="p">)</span>
+
+        <span class="n">command</span> <span class="o">=</span> <span class="p">[]</span>
+        <span class="c"># Use tap-passfd.py to send fd from TAP to FdNetDevice</span>
+        <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;sudo -S&quot;</span><span class="p">)</span>
+        <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;PYTHONPATH=$PYTHONPATH:${SRC}&quot;</span><span class="p">)</span>
+        <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;python ${SRC}/linux-tap-passfd.py&quot;</span><span class="p">)</span>
+        <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;-a </span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</span> <span class="n">address</span><span class="p">)</span>
+        <span class="n">command</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s">&quot;-S </span><span class="si">%s</span><span class="s"> &quot;</span> <span class="o">%</span> <span class="bp">self</span><span class="o">.</span><span class="n">tap</span><span class="o">.</span><span class="n">sock_name</span><span class="p">)</span>
+
+        <span class="n">command</span> <span class="o">=</span> <span class="s">&quot; &quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">command</span><span class="p">)</span>
+        <span class="n">command</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">replace_paths</span><span class="p">(</span><span class="n">command</span><span class="p">)</span>
+
+        <span class="k">return</span> <span class="n">command</span>
+</pre></div></div>
+
+          </div>
+        </div>
+      </div>
+      <div class="clearer"></div>
+    </div>
+    <div class="related">
+      <h3>Navigation</h3>
+      <ul>
+        <li class="right" style="margin-right: 10px">
+          <a href="../../../../../genindex.html" title="General Index"
+             >index</a></li>
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