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<div class="title">autoip.h</div> </div>
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<a href="prot_2autoip_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>  </div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * Copyright (c) 2007 Dominik Spies <kontakt@dspies.de></span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * Redistribution and use in source and binary forms, with or without modification,</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * are permitted provided that the following conditions are met:</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * 1. Redistributions of source code must retain the above copyright notice,</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * this list of conditions and the following disclaimer.</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright notice,</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * this list of conditions and the following disclaimer in the documentation</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * and/or other materials provided with the distribution.</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * 3. The name of the author may not be used to endorse or promote products</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * derived from this software without specific prior written permission.</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> * OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> * Author: Dominik Spies <kontakt@dspies.de></span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> * This is a AutoIP implementation for the lwIP TCP/IP stack. It aims to conform</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> * with RFC 3927.</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  </div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor">#ifndef LWIP_HDR_PROT_AUTOIP_H</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="preprocessor">#define LWIP_HDR_PROT_AUTOIP_H</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  </div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="keyword">extern</span> <span class="stringliteral">"C"</span> {</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  </div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment">/* 169.254.0.0 */</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="prot_2autoip_8h.html#ac19d92e0bfcb52079adbe92fb569d468"> 48</a></span> <span class="preprocessor">#define AUTOIP_NET 0xA9FE0000</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment">/* 169.254.1.0 */</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="prot_2autoip_8h.html#a8b4506c8e0ab7631f49567f9b81779c6"> 50</a></span> <span class="preprocessor">#define AUTOIP_RANGE_START (AUTOIP_NET | 0x0100)</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment">/* 169.254.254.255 */</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"><a class="line" href="prot_2autoip_8h.html#a84dec606d57f40eed1cdc782f702f161"> 52</a></span> <span class="preprocessor">#define AUTOIP_RANGE_END (AUTOIP_NET | 0xFEFF)</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  </div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment">/* RFC 3927 Constants */</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="prot_2autoip_8h.html#aecea6220ab7fcd0910262d5929eb5d95"> 55</a></span> <span class="preprocessor">#define PROBE_WAIT 1 </span><span class="comment">/* second (initial random delay) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00056"></a><span class="lineno"><a class="line" href="prot_2autoip_8h.html#a959b454f842224af595205645244f946"> 56</a></span> <span class="preprocessor">#define PROBE_MIN 1 </span><span class="comment">/* second (minimum delay till repeated probe) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00057"></a><span class="lineno"><a class="line" href="prot_2autoip_8h.html#ad408cf94a71b848cff8108dc5c1558e6"> 57</a></span> <span class="preprocessor">#define PROBE_MAX 2 </span><span class="comment">/* seconds (maximum delay till repeated probe) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="prot_2autoip_8h.html#a3a610440fbb8d2c6abb4aa9702f904ef"> 58</a></span> <span class="preprocessor">#define PROBE_NUM 3 </span><span class="comment">/* (number of probe packets) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00059"></a><span class="lineno"><a class="line" href="prot_2autoip_8h.html#a29141f41d1391d34730b75539000f9ea"> 59</a></span> <span class="preprocessor">#define ANNOUNCE_NUM 2 </span><span class="comment">/* (number of announcement packets) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00060"></a><span class="lineno"><a class="line" href="prot_2autoip_8h.html#a7ed8f0b9d3330a2967142e0e48b28521"> 60</a></span> <span class="preprocessor">#define ANNOUNCE_INTERVAL 2 </span><span class="comment">/* seconds (time between announcement packets) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00061"></a><span class="lineno"><a class="line" href="prot_2autoip_8h.html#a1a9b374b5e2e6da152f3a1556d09e6b3"> 61</a></span> <span class="preprocessor">#define ANNOUNCE_WAIT 2 </span><span class="comment">/* seconds (delay before announcing) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00062"></a><span class="lineno"><a class="line" href="prot_2autoip_8h.html#a14d30da6b838f3d718c0d92a9f3f3816"> 62</a></span> <span class="preprocessor">#define MAX_CONFLICTS 10 </span><span class="comment">/* (max conflicts before rate limiting) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="prot_2autoip_8h.html#a420da51b5955d94c44d285638b3931bf"> 63</a></span> <span class="preprocessor">#define RATE_LIMIT_INTERVAL 60 </span><span class="comment">/* seconds (delay between successive attempts) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00064"></a><span class="lineno"><a class="line" href="prot_2autoip_8h.html#a5c21e0d4d66eb7056ba4d515d36f0a20"> 64</a></span> <span class="preprocessor">#define DEFEND_INTERVAL 10 </span><span class="comment">/* seconds (min. wait between defensive ARPs) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  </div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment">/* AutoIP client states */</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="prot_2autoip_8h.html#a1a27a030b740b1577f95d5aeb54a1a0c"> 67</a></span> <span class="keyword">typedef</span> <span class="keyword">enum</span> {</div>
<div class="line"><a name="l00068"></a><span class="lineno"><a class="line" href="prot_2autoip_8h.html#a1a27a030b740b1577f95d5aeb54a1a0ca11fa34497b2b043e2a5e7a43323374af"> 68</a></span>  <a class="code" href="prot_2autoip_8h.html#a1a27a030b740b1577f95d5aeb54a1a0ca11fa34497b2b043e2a5e7a43323374af">AUTOIP_STATE_OFF</a> = 0,</div>
<div class="line"><a name="l00069"></a><span class="lineno"><a class="line" href="prot_2autoip_8h.html#a1a27a030b740b1577f95d5aeb54a1a0ca0926fae84a811e23d48115263b8744a3"> 69</a></span>  <a class="code" href="prot_2autoip_8h.html#a1a27a030b740b1577f95d5aeb54a1a0ca0926fae84a811e23d48115263b8744a3">AUTOIP_STATE_PROBING</a> = 1,</div>
<div class="line"><a name="l00070"></a><span class="lineno"><a class="line" href="prot_2autoip_8h.html#a1a27a030b740b1577f95d5aeb54a1a0cad35142124e3ef9875cb3a9b16209157b"> 70</a></span>  <a class="code" href="prot_2autoip_8h.html#a1a27a030b740b1577f95d5aeb54a1a0cad35142124e3ef9875cb3a9b16209157b">AUTOIP_STATE_ANNOUNCING</a> = 2,</div>
<div class="line"><a name="l00071"></a><span class="lineno"><a class="line" href="prot_2autoip_8h.html#a1a27a030b740b1577f95d5aeb54a1a0caa2c50906623e140882d3654c149cca45"> 71</a></span>  <a class="code" href="prot_2autoip_8h.html#a1a27a030b740b1577f95d5aeb54a1a0caa2c50906623e140882d3654c149cca45">AUTOIP_STATE_BOUND</a> = 3</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> } <a class="code" href="prot_2autoip_8h.html#a1a27a030b740b1577f95d5aeb54a1a0c">autoip_state_enum_t</a>;</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  </div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> }</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  </div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_HDR_PROT_AUTOIP_H */</span><span class="preprocessor"></span></div>
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<div class="ttc" id="aprot_2autoip_8h_html_a1a27a030b740b1577f95d5aeb54a1a0ca0926fae84a811e23d48115263b8744a3"><div class="ttname"><a href="prot_2autoip_8h.html#a1a27a030b740b1577f95d5aeb54a1a0ca0926fae84a811e23d48115263b8744a3">AUTOIP_STATE_PROBING</a></div><div class="ttdef"><b>Definition:</b> <a href="prot_2autoip_8h_source.html#l00069">autoip.h:69</a></div></div>
<div class="ttc" id="aprot_2autoip_8h_html_a1a27a030b740b1577f95d5aeb54a1a0c"><div class="ttname"><a href="prot_2autoip_8h.html#a1a27a030b740b1577f95d5aeb54a1a0c">autoip_state_enum_t</a></div><div class="ttdeci">autoip_state_enum_t</div><div class="ttdef"><b>Definition:</b> <a href="prot_2autoip_8h_source.html#l00067">autoip.h:67</a></div></div>
<div class="ttc" id="aprot_2autoip_8h_html_a1a27a030b740b1577f95d5aeb54a1a0ca11fa34497b2b043e2a5e7a43323374af"><div class="ttname"><a href="prot_2autoip_8h.html#a1a27a030b740b1577f95d5aeb54a1a0ca11fa34497b2b043e2a5e7a43323374af">AUTOIP_STATE_OFF</a></div><div class="ttdef"><b>Definition:</b> <a href="prot_2autoip_8h_source.html#l00068">autoip.h:68</a></div></div>
<div class="ttc" id="aprot_2autoip_8h_html_a1a27a030b740b1577f95d5aeb54a1a0caa2c50906623e140882d3654c149cca45"><div class="ttname"><a href="prot_2autoip_8h.html#a1a27a030b740b1577f95d5aeb54a1a0caa2c50906623e140882d3654c149cca45">AUTOIP_STATE_BOUND</a></div><div class="ttdef"><b>Definition:</b> <a href="prot_2autoip_8h_source.html#l00071">autoip.h:71</a></div></div>
<div class="ttc" id="aprot_2autoip_8h_html_a1a27a030b740b1577f95d5aeb54a1a0cad35142124e3ef9875cb3a9b16209157b"><div class="ttname"><a href="prot_2autoip_8h.html#a1a27a030b740b1577f95d5aeb54a1a0cad35142124e3ef9875cb3a9b16209157b">AUTOIP_STATE_ANNOUNCING</a></div><div class="ttdef"><b>Definition:</b> <a href="prot_2autoip_8h_source.html#l00070">autoip.h:70</a></div></div>
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