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&#160;<span id="projectnumber">0.0.9</span>
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<div id="projectbrief">An Alternative routing method</div>
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<div class="title">rehook.h</div> </div>
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<a href="../../d2/d42/rehook_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/* This file is part of Netsukuku</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment"> * (c) Copyright 2005 Andrea Lo Pumo aka AlpT &lt;alpt@freaknet.org&gt;</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> * This source code is free software; you can redistribute it and/or</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"> * modify it under the terms of the GNU General Public License as published</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> * by the Free Software Foundation; either version 2 of the License,</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> * or (at your option) any later version.</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment"> * This source code is distributed in the hope that it will be useful,</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment"> * Please refer to the GNU Public License for more details.</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment"> * You should have received a copy of the GNU Public License along with</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"> * this source code; if not, write to:</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment"> * Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="preprocessor">#ifndef REHOOK_H</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor">#define REHOOK_H</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;</div>
<div class="line"><a name="l00022"></a><span class="lineno"><a class="line" href="../../d2/d42/rehook_8h.html#ab550ecd914996e316fa3fb5e52aa3847"> 22</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="../../d2/d42/rehook_8h.html#ab550ecd914996e316fa3fb5e52aa3847">rehook_mutex</a>; <span class="comment">/* The can be only one rehook at the same time */</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="comment"> * REHOOK_PER_INSTANCE the is total number of rehooks allowed in</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="comment"> * REHOOK_INSTANCE_TIME(level) seconds. After REHOOK_INSTANCE_TIME(level)</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="comment"> * seconds have passed since the first rehook, REHOOK_WAIT_TIME(level) seconds</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="comment"> * must be waited before rehooking again.</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="comment"> * `level&#39; is the level where the rehook is taking place.</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="comment"> * REHOOK_WAIT_TIME is calculated in this way:</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="comment"> * ((8&lt;&lt;level) - (1&lt;&lt;level)) * 60</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"><a class="line" href="../../d2/d42/rehook_8h.html#ade6dba19bf70e7126a0b3f286fbe55d8"> 33</a></span>&#160;<span class="preprocessor">#define REHOOK_PER_INSTANCE 8</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"><a class="line" href="../../d2/d42/rehook_8h.html#a144a14e08114b6eb6e911ebbfd3914b9"> 34</a></span>&#160;<span class="preprocessor">#define REHOOK_INSTANCE_TIME(level) (REHOOK_PER_INSTANCE*(level)*60)</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"><a class="line" href="../../d2/d42/rehook_8h.html#ae3cb5602242201354e7414e1f4624792"> 35</a></span>&#160;<span class="preprocessor">#define REHOOK_WAIT_TIME(level) (( (8&lt;&lt;(level)) - (1&lt;&lt;(level)) ) * 60)</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;</div>
<div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="../../d2/d42/rehook_8h.html#a0285644353cb7385e181a63777fca255"> 38</a></span>&#160;time_t <a class="code" href="../../d2/d42/rehook_8h.html#a0285644353cb7385e181a63777fca255">last_instance_rehook</a>; <span class="comment">/* When the first rehook of the latest</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;<span class="comment"> instance occurred */</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="../../d2/d42/rehook_8h.html#a419acc34bafd06235d0533d8d7d3c815"> 40</a></span>&#160;<span class="keywordtype">int</span> <a class="code" href="../../d2/d42/rehook_8h.html#a419acc34bafd06235d0533d8d7d3c815">total_rehooks</a>; <span class="comment">/* Number of rehooks made in the current </span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;<span class="comment"> instance. </span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;<span class="comment"> It cannot be &gt; REHOOK_PER_INSTANCE */</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160;</div>
<div class="line"><a name="l00046"></a><span class="lineno"><a class="line" href="../../d2/d42/rehook_8h.html#a95e8cb2031864165725b4cecebb897e4"> 46</a></span>&#160;<span class="preprocessor">#define CHALLENGE_THRESHOLD (1&lt;&lt;16) </span><span class="comment">/* When the gnode X, which must</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;<span class="comment"> rehook, has a gnode_count &gt;= (1&lt;&lt;16) </span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160;<span class="comment"> it sends a new challenge. */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;<span class="comment">/* `rk_gnode_ip&#39; is the ip that will be used if we cannot rehook directly to </span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160;<span class="comment"> * any gnode: a new gnode is created with the ip equal to `rk_gnode_ip&#39;. */</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"><a class="line" href="../../d2/d42/rehook_8h.html#abb641e18662d878cd1547a7852d61a59"> 52</a></span>&#160;<a class="code" href="../../da/d1d/structinet__prefix.html">inet_prefix</a> <a class="code" href="../../d2/d42/rehook_8h.html#abb641e18662d878cd1547a7852d61a59">rk_gnode_ip</a>;</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;<span class="comment">/* * * Functions declaration * * */</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;<span class="keywordtype">void</span> <a class="code" href="../../d2/d42/rehook_8h.html#a0aa68ed5280644af1a48dfc6bc67cb40">rehook_init</a>(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;<span class="keywordtype">void</span> <a class="code" href="../../d2/d42/rehook_8h.html#acd9ab3b97734c31a06ae3dcf475a1b39">new_rehook</a>(<a class="code" href="../../d5/d7c/structmap__gnode.html">map_gnode</a> *<a class="code" href="../../df/dfc/structrehook__argv.html#aaeb2cbc72a00517c0fbf8fbc00d58ff3">gnode</a>, <span class="keywordtype">int</span> <a class="code" href="../../df/dfc/structrehook__argv.html#a0d1c55e735c41a41433286ebc6381bb9">gid</a>, <span class="keywordtype">int</span> <a class="code" href="../../df/dfc/structrehook__argv.html#a621c20898b1ff356165924cba8c9a349">level</a>, <span class="keywordtype">int</span> <a class="code" href="../../df/dfc/structrehook__argv.html#a094791ac4be20df6aecbf7f3532d2cc9">gnode_count</a>);</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;<span class="keywordtype">int</span> <a class="code" href="../../d2/d42/rehook_8h.html#ae6ae2d4b03e5a8cc1891cbf553ebb913">rehook</a>(<a class="code" href="../../d5/d7c/structmap__gnode.html">map_gnode</a> *hook_gnode, <span class="keywordtype">int</span> hook_level);</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/*REHOOK_H*/</span><span class="preprocessor"></span></div>
<div class="ttc" id="rehook_8h_html_a419acc34bafd06235d0533d8d7d3c815"><div class="ttname"><a href="../../d2/d42/rehook_8h.html#a419acc34bafd06235d0533d8d7d3c815">total_rehooks</a></div><div class="ttdeci">int total_rehooks</div><div class="ttdef"><b>Definition:</b> rehook.h:40</div></div>
<div class="ttc" id="rehook_8h_html_a0aa68ed5280644af1a48dfc6bc67cb40"><div class="ttname"><a href="../../d2/d42/rehook_8h.html#a0aa68ed5280644af1a48dfc6bc67cb40">rehook_init</a></div><div class="ttdeci">void rehook_init(void)</div><div class="ttdef"><b>Definition:</b> rehook.c:61</div></div>
<div class="ttc" id="rehook_8h_html_ab550ecd914996e316fa3fb5e52aa3847"><div class="ttname"><a href="../../d2/d42/rehook_8h.html#ab550ecd914996e316fa3fb5e52aa3847">rehook_mutex</a></div><div class="ttdeci">int rehook_mutex</div><div class="ttdef"><b>Definition:</b> rehook.h:22</div></div>
<div class="ttc" id="structinet__prefix_html"><div class="ttname"><a href="../../da/d1d/structinet__prefix.html">inet_prefix</a></div><div class="ttdef"><b>Definition:</b> inet.h:73</div></div>
<div class="ttc" id="rehook_8h_html_ae6ae2d4b03e5a8cc1891cbf553ebb913"><div class="ttname"><a href="../../d2/d42/rehook_8h.html#ae6ae2d4b03e5a8cc1891cbf553ebb913">rehook</a></div><div class="ttdeci">int rehook(map_gnode *hook_gnode, int hook_level)</div><div class="ttdef"><b>Definition:</b> rehook.c:354</div></div>
<div class="ttc" id="structrehook__argv_html_a0d1c55e735c41a41433286ebc6381bb9"><div class="ttname"><a href="../../df/dfc/structrehook__argv.html#a0d1c55e735c41a41433286ebc6381bb9">rehook_argv::gid</a></div><div class="ttdeci">int gid</div><div class="ttdef"><b>Definition:</b> rehook.c:53</div></div>
<div class="ttc" id="structrehook__argv_html_a094791ac4be20df6aecbf7f3532d2cc9"><div class="ttname"><a href="../../df/dfc/structrehook__argv.html#a094791ac4be20df6aecbf7f3532d2cc9">rehook_argv::gnode_count</a></div><div class="ttdeci">int gnode_count</div><div class="ttdef"><b>Definition:</b> rehook.c:56</div></div>
<div class="ttc" id="structrehook__argv_html_aaeb2cbc72a00517c0fbf8fbc00d58ff3"><div class="ttname"><a href="../../df/dfc/structrehook__argv.html#aaeb2cbc72a00517c0fbf8fbc00d58ff3">rehook_argv::gnode</a></div><div class="ttdeci">map_gnode * gnode</div><div class="ttdef"><b>Definition:</b> rehook.c:54</div></div>
<div class="ttc" id="structrehook__argv_html_a621c20898b1ff356165924cba8c9a349"><div class="ttname"><a href="../../df/dfc/structrehook__argv.html#a621c20898b1ff356165924cba8c9a349">rehook_argv::level</a></div><div class="ttdeci">int level</div><div class="ttdef"><b>Definition:</b> rehook.c:55</div></div>
<div class="ttc" id="rehook_8h_html_abb641e18662d878cd1547a7852d61a59"><div class="ttname"><a href="../../d2/d42/rehook_8h.html#abb641e18662d878cd1547a7852d61a59">rk_gnode_ip</a></div><div class="ttdeci">inet_prefix rk_gnode_ip</div><div class="ttdef"><b>Definition:</b> rehook.h:52</div></div>
<div class="ttc" id="rehook_8h_html_a0285644353cb7385e181a63777fca255"><div class="ttname"><a href="../../d2/d42/rehook_8h.html#a0285644353cb7385e181a63777fca255">last_instance_rehook</a></div><div class="ttdeci">time_t last_instance_rehook</div><div class="ttdef"><b>Definition:</b> rehook.h:38</div></div>
<div class="ttc" id="structmap__gnode_html"><div class="ttname"><a href="../../d5/d7c/structmap__gnode.html">map_gnode</a></div><div class="ttdef"><b>Definition:</b> gmap.h:37</div></div>
<div class="ttc" id="rehook_8h_html_acd9ab3b97734c31a06ae3dcf475a1b39"><div class="ttname"><a href="../../d2/d42/rehook_8h.html#acd9ab3b97734c31a06ae3dcf475a1b39">new_rehook</a></div><div class="ttdeci">void new_rehook(map_gnode *gnode, int gid, int level, int gnode_count)</div><div class="ttdef"><b>Definition:</b> rehook.c:268</div></div>
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