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  66   <h1>Source code for nepi.resources.linux.interface</h1><div class="highlight"><pre>
  67 <span class="c">#</span>
  68 <span class="c">#    NEPI, a framework to manage network experiments</span>
  69 <span class="c">#    Copyright (C) 2013 INRIA</span>
  70 <span class="c">#</span>
  71 <span class="c">#    This program is free software: you can redistribute it and/or modify</span>
  72 <span class="c">#    it under the terms of the GNU General Public License version 2 as</span>
  73 <span class="c">#    published by the Free Software Foundation;</span>
  74 <span class="c">#</span>
  75 <span class="c">#    This program is distributed in the hope that it will be useful,</span>
  76 <span class="c">#    but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
  77 <span class="c">#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
  78 <span class="c">#    GNU General Public License for more details.</span>
  79 <span class="c">#</span>
  80 <span class="c">#    You should have received a copy of the GNU General Public License</span>
  81 <span class="c">#    along with this program.  If not, see &lt;http://www.gnu.org/licenses/&gt;.</span>
  82 <span class="c">#</span>
  83 <span class="c"># Author: Alina Quereilhac &lt;alina.quereilhac@inria.fr&gt;</span>
  84
  85 <span class="kn">from</span> <span class="nn">nepi.execution.attribute</span> <span class="kn">import</span> <span class="n">Attribute</span><span class="p">,</span> <span class="n">Types</span><span class="p">,</span> <span class="n">Flags</span>
  86 <span class="kn">from</span> <span class="nn">nepi.execution.resource</span> <span class="kn">import</span> <span class="n">ResourceManager</span><span class="p">,</span> <span class="n">clsinit_copy</span><span class="p">,</span> \
  87         <span class="n">ResourceState</span>
  88 <span class="kn">from</span> <span class="nn">nepi.resources.linux.node</span> <span class="kn">import</span> <span class="n">LinuxNode</span>
  89 <span class="kn">from</span> <span class="nn">nepi.resources.linux.channel</span> <span class="kn">import</span> <span class="n">LinuxChannel</span>
  90
  91 <span class="kn">import</span> <span class="nn">collections</span>
  92 <span class="kn">import</span> <span class="nn">os</span>
  93 <span class="kn">import</span> <span class="nn">random</span>
  94 <span class="kn">import</span> <span class="nn">re</span>
  95 <span class="kn">import</span> <span class="nn">tempfile</span>
  96 <span class="kn">import</span> <span class="nn">time</span>
  97
  98 <span class="c"># TODO: </span>
  99 <span class="c">#     - check UP, MTU attributes!</span>
 100 <span class="c">#     - clean up code and test!</span>
 101
 102 <span class="nd">@clsinit_copy</span>
 103 <div class="viewcode-block" id="LinuxInterface"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.interface.LinuxInterface">[docs]</a><span class="k">class</span> <span class="nc">LinuxInterface</span><span class="p">(</span><span class="n">ResourceManager</span><span class="p">):</span>
 104     <span class="n">_rtype</span> <span class="o">=</span> <span class="s">&quot;linux::Interface&quot;</span>
 105     <span class="n">_help</span> <span class="o">=</span> <span class="s">&quot;Controls network devices on Linux hosts through the ifconfig tool&quot;</span>
 106     <span class="n">_platform</span> <span class="o">=</span> <span class="s">&quot;linux&quot;</span>
 107
 108     <span class="nd">@classmethod</span>
 109     <span class="k">def</span> <span class="nf">_register_attributes</span><span class="p">(</span><span class="n">cls</span><span class="p">):</span>
 110         <span class="n">ip4</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;ip4&quot;</span><span class="p">,</span> <span class="s">&quot;IPv4 Address&quot;</span><span class="p">,</span>
 111               <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
 112
 113         <span class="n">ip6</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;ip6&quot;</span><span class="p">,</span> <span class="s">&quot;IPv6 Address&quot;</span><span class="p">,</span>
 114                 <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
 115
 116         <span class="n">mac</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;mac&quot;</span><span class="p">,</span> <span class="s">&quot;MAC Address&quot;</span><span class="p">,</span>
 117                 <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
 118
 119         <span class="n">mask4</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;mask4&quot;</span><span class="p">,</span> <span class="s">&quot;IPv4 network mask&quot;</span><span class="p">,</span>
 120                 <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
 121
 122         <span class="n">mask6</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;mask6&quot;</span><span class="p">,</span> <span class="s">&quot;IPv6 network mask&quot;</span><span class="p">,</span>
 123                 <span class="nb">type</span> <span class="o">=</span> <span class="n">Types</span><span class="o">.</span><span class="n">Integer</span><span class="p">,</span>
 124                 <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
 125
 126         <span class="n">mtu</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;mtu&quot;</span><span class="p">,</span> <span class="s">&quot;Maximum transmition unit for device&quot;</span><span class="p">,</span>
 127                 <span class="nb">type</span> <span class="o">=</span> <span class="n">Types</span><span class="o">.</span><span class="n">Integer</span><span class="p">)</span>
 128
 129         <span class="n">devname</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;deviceName&quot;</span><span class="p">,</span>
 130                 <span class="s">&quot;Name of the network interface (e.g. eth0, wlan0, etc)&quot;</span><span class="p">,</span>
 131                 <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
 132
 133         <span class="n">up</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;up&quot;</span><span class="p">,</span> <span class="s">&quot;Link up&quot;</span><span class="p">,</span> <span class="nb">type</span> <span class="o">=</span> <span class="n">Types</span><span class="o">.</span><span class="n">Bool</span><span class="p">)</span>
 134
 135         <span class="n">tear_down</span> <span class="o">=</span> <span class="n">Attribute</span><span class="p">(</span><span class="s">&quot;tearDown&quot;</span><span class="p">,</span> <span class="s">&quot;Bash script to be executed before &quot;</span> <span class="o">+</span> \
 136                 <span class="s">&quot;releasing the resource&quot;</span><span class="p">,</span>
 137                 <span class="n">flags</span> <span class="o">=</span> <span class="n">Flags</span><span class="o">.</span><span class="n">Design</span><span class="p">)</span>
 138
 139         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">ip4</span><span class="p">)</span>
 140         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">ip6</span><span class="p">)</span>
 141         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">mac</span><span class="p">)</span>
 142         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">mask4</span><span class="p">)</span>
 143         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">mask6</span><span class="p">)</span>
 144         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">mtu</span><span class="p">)</span>
 145         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">devname</span><span class="p">)</span>
 146         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">up</span><span class="p">)</span>
 147         <span class="n">cls</span><span class="o">.</span><span class="n">_register_attribute</span><span class="p">(</span><span class="n">tear_down</span><span class="p">)</span>
 148
 149     <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>
 150         <span class="nb">super</span><span class="p">(</span><span class="n">LinuxInterface</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>
 151         <span class="bp">self</span><span class="o">.</span><span class="n">_configured</span> <span class="o">=</span> <span class="bp">False</span>
 152
 153         <span class="bp">self</span><span class="o">.</span><span class="n">add_set_hooks</span><span class="p">()</span>
 154
 155 <div class="viewcode-block" id="LinuxInterface.log_message"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.interface.LinuxInterface.log_message">[docs]</a>    <span class="k">def</span> <span class="nf">log_message</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">msg</span><span class="p">):</span>
 156         <span class="k">return</span> <span class="s">&quot; guid </span><span class="si">%d</span><span class="s"> - host </span><span class="si">%s</span><span class="s"> - </span><span class="si">%s</span><span class="s"> &quot;</span> <span class="o">%</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">guid</span><span class="p">,</span>
 157                 <span class="bp">self</span><span class="o">.</span><span class="n">node</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="p">)</span>
 158 </div>
 159     <span class="nd">@property</span>
 160 <div class="viewcode-block" id="LinuxInterface.node"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.interface.LinuxInterface.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>
 161         <span class="n">node</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">LinuxNode</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">())</span>
 162         <span class="k">if</span> <span class="n">node</span><span class="p">:</span> <span class="k">return</span> <span class="n">node</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
 163         <span class="k">return</span> <span class="bp">None</span>
 164 </div>
 165     <span class="nd">@property</span>
 166 <div class="viewcode-block" id="LinuxInterface.channel"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.interface.LinuxInterface.channel">[docs]</a>    <span class="k">def</span> <span class="nf">channel</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 167         <span class="n">chan</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">LinuxChannel</span><span class="o">.</span><span class="n">get_rtype</span><span class="p">())</span>
 168         <span class="k">if</span> <span class="n">chan</span><span class="p">:</span> <span class="k">return</span> <span class="n">chan</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
 169         <span class="k">return</span> <span class="bp">None</span>
 170 </div>
 171 <div class="viewcode-block" id="LinuxInterface.do_discover"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.interface.LinuxInterface.do_discover">[docs]</a>    <span class="k">def</span> <span class="nf">do_discover</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 172         <span class="n">devname</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;deviceName&quot;</span><span class="p">)</span>
 173         <span class="n">ip4</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;ip4&quot;</span><span class="p">)</span>
 174         <span class="n">ip6</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;ip4&quot;</span><span class="p">)</span>
 175         <span class="n">mac</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;mac&quot;</span><span class="p">)</span>
 176         <span class="n">mask4</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;mask4&quot;</span><span class="p">)</span>
 177         <span class="n">mask6</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;mask6&quot;</span><span class="p">)</span>
 178         <span class="n">mtu</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;mtu&quot;</span><span class="p">)</span>
 179
 180         <span class="c"># Get current interfaces information</span>
 181         <span class="p">(</span><span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">),</span> <span class="n">proc</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="s">&quot;ifconfig&quot;</span><span class="p">,</span> <span class="n">sudo</span> <span class="o">=</span> <span class="bp">True</span><span class="p">,</span> <span class="n">tty</span> <span class="o">=</span> <span class="bp">True</span><span class="p">)</span>
 182
 183         <span class="k">if</span> <span class="n">err</span> <span class="ow">and</span> <span class="n">proc</span><span class="o">.</span><span class="n">poll</span><span class="p">():</span>
 184             <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot; Error retrieving interface information &quot;</span>
 185             <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>
 186             <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="s">&quot;</span><span class="si">%s</span><span class="s"> - </span><span class="si">%s</span><span class="s"> - </span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</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>
 187
 188         <span class="c"># Check if an interface is found matching the RM attributes</span>
 189         <span class="n">ifaces</span> <span class="o">=</span> <span class="n">out</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s">&quot;</span><span class="se">\n\n</span><span class="s">&quot;</span><span class="p">)</span>
 190
 191         <span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="n">ifaces</span><span class="p">:</span>
 192             <span class="n">m</span> <span class="o">=</span> <span class="n">re</span><span class="o">.</span><span class="n">findall</span><span class="p">(</span><span class="s">&quot;(\w+)\s+Link\s+encap:\w+(\s+HWaddr\s+(([0-9a-fA-F]{2}:?){6}))?(\s+inet\s+addr:((\d+\.?){4}).+Mask:(\d+\.\d+\.\d+\.\d+))?(.+inet6\s+addr:\s+([0-9a-fA-F:.]+)/(\d+))?(.+(UP))?(.+MTU:(\d+))?&quot;</span><span class="p">,</span> <span class="n">i</span><span class="p">,</span> <span class="n">re</span><span class="o">.</span><span class="n">DOTALL</span><span class="p">)</span>
 193
 194             <span class="n">m</span> <span class="o">=</span> <span class="n">m</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
 195             <span class="n">dn</span> <span class="o">=</span> <span class="n">m</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span>
 196             <span class="n">mc</span> <span class="o">=</span> <span class="n">m</span><span class="p">[</span><span class="mi">2</span><span class="p">]</span>
 197             <span class="n">i4</span> <span class="o">=</span> <span class="n">m</span><span class="p">[</span><span class="mi">5</span><span class="p">]</span>
 198             <span class="n">msk4</span> <span class="o">=</span> <span class="n">m</span><span class="p">[</span><span class="mi">7</span><span class="p">]</span>
 199             <span class="n">i6</span> <span class="o">=</span> <span class="n">m</span><span class="p">[</span><span class="mi">9</span><span class="p">]</span>
 200             <span class="n">msk6</span> <span class="o">=</span> <span class="n">m</span><span class="p">[</span><span class="mi">10</span><span class="p">]</span>
 201             <span class="n">up</span> <span class="o">=</span> <span class="bp">True</span> <span class="k">if</span> <span class="n">m</span><span class="p">[</span><span class="mi">12</span><span class="p">]</span> <span class="k">else</span> <span class="bp">False</span>
 202             <span class="n">mu</span> <span class="o">=</span> <span class="n">m</span><span class="p">[</span><span class="mi">14</span><span class="p">]</span>
 203
 204             <span class="bp">self</span><span class="o">.</span><span class="n">debug</span><span class="p">(</span><span class="s">&quot;Found interface </span><span class="si">%(devname)s</span><span class="s"> with MAC </span><span class="si">%(mac)s</span><span class="s">,&quot;</span>
 205                     <span class="s">&quot;IPv4 </span><span class="si">%(ipv4)s</span><span class="s"> </span><span class="si">%(mask4)s</span><span class="s"> IPv6 </span><span class="si">%(ipv6)s</span><span class="s">/</span><span class="si">%(mask6)s</span><span class="s"> </span><span class="si">%(up)s</span><span class="s"> </span><span class="si">%(mtu)s</span><span class="s">&quot;</span> <span class="o">%</span> <span class="p">({</span>
 206                 <span class="s">&#39;devname&#39;</span><span class="p">:</span> <span class="n">dn</span><span class="p">,</span>
 207                 <span class="s">&#39;mac&#39;</span><span class="p">:</span> <span class="n">mc</span><span class="p">,</span>
 208                 <span class="s">&#39;ipv4&#39;</span><span class="p">:</span> <span class="n">i4</span><span class="p">,</span>
 209                 <span class="s">&#39;mask4&#39;</span><span class="p">:</span> <span class="n">msk4</span><span class="p">,</span>
 210                 <span class="s">&#39;ipv6&#39;</span><span class="p">:</span> <span class="n">i6</span><span class="p">,</span>
 211                 <span class="s">&#39;mask6&#39;</span><span class="p">:</span> <span class="n">msk6</span><span class="p">,</span>
 212                 <span class="s">&#39;up&#39;</span><span class="p">:</span> <span class="n">up</span><span class="p">,</span>
 213                 <span class="s">&#39;mtu&#39;</span><span class="p">:</span> <span class="n">mu</span>
 214                 <span class="p">})</span> <span class="p">)</span>
 215
 216             <span class="c"># If the user didn&#39;t provide information we take the first </span>
 217             <span class="c"># interface that is UP</span>
 218             <span class="k">if</span> <span class="ow">not</span> <span class="n">devname</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">ip4</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">ip6</span> <span class="ow">and</span> <span class="n">up</span><span class="p">:</span>
 219                 <span class="bp">self</span><span class="o">.</span><span class="n">_configured</span> <span class="o">=</span> <span class="bp">True</span>
 220                 <span class="bp">self</span><span class="o">.</span><span class="n">load_configuration</span><span class="p">(</span><span class="n">dn</span><span class="p">,</span> <span class="n">mc</span><span class="p">,</span> <span class="n">i4</span><span class="p">,</span> <span class="n">msk4</span><span class="p">,</span> <span class="n">i6</span><span class="p">,</span> <span class="n">msk6</span><span class="p">,</span> <span class="n">mu</span><span class="p">,</span> <span class="n">up</span><span class="p">)</span>
 221                 <span class="k">break</span>
 222
 223             <span class="c"># If the user provided ipv4 or ipv6 matching that of an interface</span>
 224             <span class="c"># load the interface info</span>
 225             <span class="k">if</span> <span class="p">(</span><span class="n">ip4</span> <span class="ow">and</span> <span class="n">ip4</span> <span class="o">==</span> <span class="n">i4</span><span class="p">)</span> <span class="ow">or</span> <span class="p">(</span><span class="n">ip6</span> <span class="ow">and</span> <span class="n">ip6</span> <span class="o">==</span> <span class="n">i6</span><span class="p">):</span>
 226                 <span class="bp">self</span><span class="o">.</span><span class="n">_configured</span> <span class="o">=</span> <span class="bp">True</span>
 227                 <span class="bp">self</span><span class="o">.</span><span class="n">load_configuration</span><span class="p">(</span><span class="n">dn</span><span class="p">,</span> <span class="n">mc</span><span class="p">,</span> <span class="n">i4</span><span class="p">,</span> <span class="n">msk4</span><span class="p">,</span> <span class="n">i6</span><span class="p">,</span> <span class="n">msk6</span><span class="p">,</span> <span class="n">mu</span><span class="p">,</span> <span class="n">up</span><span class="p">)</span>
 228                 <span class="k">break</span>
 229
 230             <span class="c"># If the user provided the device name we load the associated info</span>
 231             <span class="k">if</span> <span class="n">devname</span> <span class="ow">and</span> <span class="n">devname</span> <span class="o">==</span> <span class="n">dn</span><span class="p">:</span>
 232                 <span class="k">if</span> <span class="p">((</span><span class="n">ip4</span> <span class="ow">and</span> <span class="n">ip4</span> <span class="o">==</span> <span class="n">i4</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="n">ipv6</span> <span class="ow">and</span> <span class="n">ip6</span> <span class="o">==</span> <span class="n">i6</span><span class="p">))</span> <span class="ow">or</span> \
 233                         <span class="ow">not</span> <span class="p">(</span><span class="n">ip4</span> <span class="ow">or</span> <span class="n">ip6</span><span class="p">):</span>
 234                     <span class="bp">self</span><span class="o">.</span><span class="n">_configured</span> <span class="o">=</span> <span class="bp">True</span>
 235
 236                 <span class="c"># If the user gave a different ip than the existing, asume ip </span>
 237                 <span class="c"># needs to be changed</span>
 238                 <span class="n">i4</span> <span class="o">=</span> <span class="n">ip4</span> <span class="ow">or</span> <span class="n">i4</span>
 239                 <span class="n">i6</span> <span class="o">=</span> <span class="n">ip6</span> <span class="ow">or</span> <span class="n">i6</span>
 240                 <span class="n">mu</span> <span class="o">=</span> <span class="n">mtu</span> <span class="ow">or</span> <span class="n">mu</span>
 241
 242                 <span class="bp">self</span><span class="o">.</span><span class="n">load_configuration</span><span class="p">(</span><span class="n">dn</span><span class="p">,</span> <span class="n">mc</span><span class="p">,</span> <span class="n">i4</span><span class="p">,</span> <span class="n">msk4</span><span class="p">,</span> <span class="n">i6</span><span class="p">,</span> <span class="n">msk6</span><span class="p">,</span> <span class="n">mu</span><span class="p">,</span> <span class="n">up</span><span class="p">)</span>
 243                 <span class="k">break</span>
 244
 245         <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&quot;deviceName&quot;</span><span class="p">):</span>
 246             <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;Unable to resolve interface &quot;</span>
 247             <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>
 248             <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="n">msg</span>
 249
 250         <span class="nb">super</span><span class="p">(</span><span class="n">LinuxInterface</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">do_discover</span><span class="p">()</span>
 251 </div>
 252 <div class="viewcode-block" id="LinuxInterface.do_provision"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.interface.LinuxInterface.do_provision">[docs]</a>    <span class="k">def</span> <span class="nf">do_provision</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 253         <span class="n">devname</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;deviceName&quot;</span><span class="p">)</span>
 254         <span class="n">ip4</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;ip4&quot;</span><span class="p">)</span>
 255         <span class="n">ip6</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;ip4&quot;</span><span class="p">)</span>
 256         <span class="n">mac</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;mac&quot;</span><span class="p">)</span>
 257         <span class="n">mask4</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;mask4&quot;</span><span class="p">)</span>
 258         <span class="n">mask6</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;mask6&quot;</span><span class="p">)</span>
 259         <span class="n">mtu</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;mtu&quot;</span><span class="p">)</span>
 260
 261         <span class="c"># Must configure interface if configuration is required</span>
 262         <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">_configured</span><span class="p">:</span>
 263             <span class="n">cmd</span> <span class="o">=</span> <span class="s">&quot;ifconfig </span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</span> <span class="n">devname</span>
 264
 265             <span class="k">if</span> <span class="n">ip4</span> <span class="ow">and</span> <span class="n">mask4</span><span class="p">:</span>
 266                 <span class="n">cmd</span> <span class="o">+=</span> <span class="s">&quot; </span><span class="si">%(ip4)s</span><span class="s"> netmask </span><span class="si">%(mask4)s</span><span class="s"> broadcast </span><span class="si">%(bcast)s</span><span class="s"> up&quot;</span> <span class="o">%</span> <span class="p">({</span>
 267                     <span class="s">&#39;ip4&#39;</span><span class="p">:</span> <span class="n">ip4</span><span class="p">,</span>
 268                     <span class="s">&#39;mask4&#39;</span><span class="p">:</span> <span class="n">mask4</span><span class="p">,</span>
 269                     <span class="s">&#39;bcast&#39;</span><span class="p">:</span> <span class="n">bcast</span><span class="p">})</span>
 270             <span class="k">if</span> <span class="n">mtu</span><span class="p">:</span>
 271                 <span class="n">cmd</span> <span class="o">+=</span> <span class="s">&quot; mtu </span><span class="si">%d</span><span class="s"> &quot;</span> <span class="o">%</span> <span class="n">mtu</span>
 272
 273             <span class="p">(</span><span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">),</span> <span class="n">proc</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">cmd</span><span class="p">,</span> <span class="n">sudo</span> <span class="o">=</span> <span class="bp">True</span><span class="p">)</span>
 274
 275             <span class="k">if</span> <span class="n">err</span> <span class="ow">and</span> <span class="n">proc</span><span class="o">.</span><span class="n">poll</span><span class="p">():</span>
 276                 <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;Error configuring interface with command &#39;</span><span class="si">%s</span><span class="s">&#39;&quot;</span> <span class="o">%</span> <span class="n">cmd</span>
 277                 <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>
 278                 <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="s">&quot;</span><span class="si">%s</span><span class="s"> - </span><span class="si">%s</span><span class="s"> - </span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</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>
 279
 280             <span class="k">if</span> <span class="n">ip6</span> <span class="ow">and</span> <span class="n">mask6</span><span class="p">:</span>
 281                 <span class="n">cmd</span> <span class="o">=</span> <span class="s">&quot;ifconfig </span><span class="si">%(devname)s</span><span class="s"> inet6 add </span><span class="si">%(ip6)s</span><span class="s">/</span><span class="si">%(mask6)d</span><span class="s">&quot;</span> <span class="o">%</span> <span class="p">({</span>
 282                         <span class="s">&#39;devname&#39;</span><span class="p">:</span> <span class="n">devname</span><span class="p">,</span>
 283                         <span class="s">&#39;ip6&#39;</span><span class="p">:</span> <span class="n">ip6</span><span class="p">,</span>
 284                         <span class="s">&#39;mask6&#39;</span><span class="p">:</span> <span class="n">mask6</span><span class="p">})</span>
 285
 286             <span class="p">(</span><span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">),</span> <span class="n">proc</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">cmd</span><span class="p">,</span> <span class="n">sudo</span> <span class="o">=</span> <span class="bp">True</span><span class="p">)</span>
 287
 288             <span class="k">if</span> <span class="n">err</span> <span class="ow">and</span> <span class="n">proc</span><span class="o">.</span><span class="n">poll</span><span class="p">():</span>
 289                 <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;Error seting ipv6 for interface using command &#39;</span><span class="si">%s</span><span class="s">&#39; &quot;</span> <span class="o">%</span> <span class="n">cmd</span>
 290                 <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>
 291                 <span class="k">raise</span> <span class="ne">RuntimeError</span><span class="p">,</span> <span class="s">&quot;</span><span class="si">%s</span><span class="s"> - </span><span class="si">%s</span><span class="s"> - </span><span class="si">%s</span><span class="s">&quot;</span> <span class="o">%</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>
 292
 293         <span class="nb">super</span><span class="p">(</span><span class="n">LinuxInterface</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">do_provision</span><span class="p">()</span>
 294 </div>
 295 <div class="viewcode-block" id="LinuxInterface.do_deploy"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.interface.LinuxInterface.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>
 296         <span class="c"># Wait until node is provisioned</span>
 297         <span class="n">node</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span>
 298         <span class="n">chan</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">channel</span>
 299
 300         <span class="k">if</span> <span class="ow">not</span> <span class="n">node</span> <span class="ow">or</span> <span class="n">node</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">PROVISIONED</span><span class="p">:</span>
 301             <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>
 302         <span class="k">elif</span> <span class="ow">not</span> <span class="n">chan</span> <span class="ow">or</span> <span class="n">chan</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>
 303             <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>
 304         <span class="k">else</span><span class="p">:</span>
 305             <span class="c"># Verify if the interface exists in node. If not, configue</span>
 306             <span class="c"># if yes, load existing configuration</span>
 307             <span class="bp">self</span><span class="o">.</span><span class="n">do_discover</span><span class="p">()</span>
 308             <span class="bp">self</span><span class="o">.</span><span class="n">do_provision</span><span class="p">()</span>
 309
 310             <span class="nb">super</span><span class="p">(</span><span class="n">LinuxInterface</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">do_deploy</span><span class="p">()</span>
 311 </div>
 312 <div class="viewcode-block" id="LinuxInterface.do_release"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.interface.LinuxInterface.do_release">[docs]</a>    <span class="k">def</span> <span class="nf">do_release</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 313         <span class="n">tear_down</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;tearDown&quot;</span><span class="p">)</span>
 314         <span class="k">if</span> <span class="n">tear_down</span><span class="p">:</span>
 315             <span class="bp">self</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">tear_down</span><span class="p">)</span>
 316
 317         <span class="nb">super</span><span class="p">(</span><span class="n">LinuxInterface</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">do_release</span><span class="p">()</span>
 318 </div>
 319 <div class="viewcode-block" id="LinuxInterface.valid_connection"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.interface.LinuxInterface.valid_connection">[docs]</a>    <span class="k">def</span> <span class="nf">valid_connection</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">guid</span><span class="p">):</span>
 320         <span class="c"># TODO: Validate!</span>
 321         <span class="k">return</span> <span class="bp">True</span>
 322 </div>
 323 <div class="viewcode-block" id="LinuxInterface.load_configuration"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.interface.LinuxInterface.load_configuration">[docs]</a>    <span class="k">def</span> <span class="nf">load_configuration</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">devname</span><span class="p">,</span> <span class="n">mac</span><span class="p">,</span> <span class="n">ip4</span><span class="p">,</span> <span class="n">mask4</span><span class="p">,</span> <span class="n">ip6</span><span class="p">,</span> <span class="n">mask6</span><span class="p">,</span> <span class="n">mtu</span><span class="p">,</span> <span class="n">up</span><span class="p">):</span>
 324         <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">&quot;deviceName&quot;</span><span class="p">,</span> <span class="n">devname</span><span class="p">)</span>
 325         <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">&quot;mac&quot;</span><span class="p">,</span> <span class="n">mac</span><span class="p">)</span>
 326         <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">&quot;ip4&quot;</span><span class="p">,</span> <span class="n">ip4</span><span class="p">)</span>
 327         <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">&quot;mask4&quot;</span><span class="p">,</span> <span class="n">mask4</span><span class="p">)</span>
 328         <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">&quot;ip6&quot;</span><span class="p">,</span> <span class="n">ip6</span><span class="p">)</span>
 329         <span class="bp">self</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s">&quot;mask6&quot;</span><span class="p">,</span> <span class="n">mask6</span><span class="p">)</span>
 330
 331         <span class="c"># set the following without validating or triggering hooks</span>
 332         <span class="n">attr</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_attrs</span><span class="p">[</span><span class="s">&quot;up&quot;</span><span class="p">]</span>
 333         <span class="n">attr</span><span class="o">.</span><span class="n">_value</span> <span class="o">=</span> <span class="n">up</span>
 334         <span class="n">attr</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_attrs</span><span class="p">[</span><span class="s">&quot;mtu&quot;</span><span class="p">]</span>
 335         <span class="n">attr</span><span class="o">.</span><span class="n">_value</span> <span class="o">=</span> <span class="n">mtu</span>
 336 </div>
 337 <div class="viewcode-block" id="LinuxInterface.add_set_hooks"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.interface.LinuxInterface.add_set_hooks">[docs]</a>    <span class="k">def</span> <span class="nf">add_set_hooks</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
 338         <span class="n">attrup</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_attrs</span><span class="p">[</span><span class="s">&quot;up&quot;</span><span class="p">]</span>
 339         <span class="n">attrup</span><span class="o">.</span><span class="n">set_hook</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">set_hook_up</span>
 340
 341         <span class="n">attrmtu</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_attrs</span><span class="p">[</span><span class="s">&quot;mtu&quot;</span><span class="p">]</span>
 342         <span class="n">attrmtu</span><span class="o">.</span><span class="n">set_hook</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">set_hook_mtu</span>
 343 </div>
 344 <div class="viewcode-block" id="LinuxInterface.set_hook_up"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.interface.LinuxInterface.set_hook_up">[docs]</a>    <span class="k">def</span> <span class="nf">set_hook_up</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">oldval</span><span class="p">,</span> <span class="n">newval</span><span class="p">):</span>
 345         <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">NEW</span> <span class="ow">or</span> <span class="n">oldval</span> <span class="o">==</span> <span class="n">newval</span><span class="p">:</span>
 346             <span class="k">return</span> <span class="n">oldval</span>
 347
 348         <span class="c"># configure interface up</span>
 349         <span class="k">if</span> <span class="n">newval</span> <span class="o">==</span> <span class="bp">True</span><span class="p">:</span>
 350             <span class="n">cmd</span> <span class="o">=</span> <span class="s">&quot;ifup </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">get</span><span class="p">(</span><span class="s">&quot;deviceName&quot;</span><span class="p">)</span>
 351         <span class="k">elif</span> <span class="n">newval</span> <span class="o">==</span> <span class="bp">False</span><span class="p">:</span>
 352             <span class="n">cmd</span> <span class="o">=</span> <span class="s">&quot;ifdown </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">get</span><span class="p">(</span><span class="s">&quot;deviceName&quot;</span><span class="p">)</span>
 353
 354         <span class="p">(</span><span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">),</span> <span class="n">proc</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">cmd</span><span class="p">,</span> <span class="n">sudo</span> <span class="o">=</span> <span class="bp">True</span><span class="p">)</span>
 355
 356         <span class="k">if</span> <span class="n">err</span> <span class="ow">and</span> <span class="n">proc</span><span class="o">.</span><span class="n">poll</span><span class="p">():</span>
 357             <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;Error setting interface up/down using command &#39;</span><span class="si">%s</span><span class="s">&#39; &quot;</span> <span class="o">%</span> <span class="n">cmd</span>
 358             <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">err</span><span class="p">,</span> <span class="n">out</span><span class="p">)</span>
 359             <span class="k">return</span> <span class="n">oldval</span>
 360
 361         <span class="k">return</span> <span class="n">newval</span>
 362 </div>
 363 <div class="viewcode-block" id="LinuxInterface.set_hook_mtu"><a class="viewcode-back" href="../../../../_layout/nepi.resources.linux.html#nepi.resources.linux.interface.LinuxInterface.set_hook_mtu">[docs]</a>    <span class="k">def</span> <span class="nf">set_hook_mtu</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">oldval</span><span class="p">,</span> <span class="n">newval</span><span class="p">):</span>
 364         <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">NEW</span> <span class="ow">or</span> <span class="n">oldval</span> <span class="o">==</span> <span class="n">newval</span><span class="p">:</span>
 365             <span class="k">return</span> <span class="n">oldval</span>
 366
 367         <span class="n">cmd</span> <span class="o">=</span> <span class="s">&quot;ifconfig </span><span class="si">%s</span><span class="s"> mtu </span><span class="si">%d</span><span class="s">&quot;</span> <span class="o">%</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">&quot;deviceName&quot;</span><span class="p">),</span> <span class="n">newval</span><span class="p">)</span>
 368
 369         <span class="p">(</span><span class="n">out</span><span class="p">,</span> <span class="n">err</span><span class="p">),</span> <span class="n">proc</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">node</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">cmd</span><span class="p">,</span> <span class="n">sudo</span> <span class="o">=</span> <span class="bp">True</span><span class="p">)</span>
 370
 371         <span class="k">if</span> <span class="n">err</span> <span class="ow">and</span> <span class="n">proc</span><span class="o">.</span><span class="n">poll</span><span class="p">():</span>
 372             <span class="n">msg</span> <span class="o">=</span> <span class="s">&quot;Error setting interface MTU using command &#39;</span><span class="si">%s</span><span class="s">&#39; &quot;</span> <span class="o">%</span> <span class="n">cmd</span>
 373             <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">err</span><span class="p">,</span> <span class="n">out</span><span class="p">)</span>
 374             <span class="k">return</span>  <span class="n">oldval</span>
 375
 376         <span class="k">return</span> <span class="n">newval</span>
 377 </pre></div></div></div>
 378
 379           </div>
 380         </div>
 381       </div>
 382       <div class="clearer"></div>
 383     </div>
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 385       <h3>Navigation</h3>
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