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<div class="title">ip.h</div>  </div>
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<a href="ip_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; </div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * Copyright (c) 2001-2004 Swedish Institute of Computer Science.</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment"> * Redistribution and use in source and binary forms, with or without modification,</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment"> * are permitted provided that the following conditions are met:</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment"> * 1. Redistributions of source code must retain the above copyright notice,</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment"> *    this list of conditions and the following disclaimer.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright notice,</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment"> *    this list of conditions and the following disclaimer in the documentation</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment"> *    and/or other materials provided with the distribution.</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<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="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment"> *    derived from this software without specific prior written permission.</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS&#39;&#39; AND ANY EXPRESS OR IMPLIED</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="comment"> * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF</span></div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment"> * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT</span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="comment"> * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,</span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="comment"> * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="comment"> * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS</span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="comment"> * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN</span></div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="comment"> * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING</span></div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<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="l00030"></a><span class="lineno">   30</span>&#160;<span class="comment"> * OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="comment"> * This file is part of the lwIP TCP/IP stack.</span></div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="comment"> * Author: Adam Dunkels &lt;adam@sics.se&gt;</span></div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="preprocessor">#ifndef LWIP_HDR_IP_H</span></div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="preprocessor">#define LWIP_HDR_IP_H</span></div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160; </div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="opt_8h.html">net/opt.h</a>&quot;</span></div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160; </div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="def_8h.html">net/def.h</a>&quot;</span></div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="pbuf_8h.html">net/pbuf.h</a>&quot;</span></div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="ip__addr_8h.html">net/ip_addr.h</a>&quot;</span></div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="err_8h.html">net/err.h</a>&quot;</span></div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="netif_8h.html">net/netif.h</a>&quot;</span></div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="ip4_8h.html">net/ip4.h</a>&quot;</span></div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="ip6_8h.html">net/ip6.h</a>&quot;</span></div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="prot_2ip_8h.html">net/prot/ip.h</a>&quot;</span></div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160; </div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="keyword">extern</span> <span class="stringliteral">&quot;C&quot;</span> {</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160; </div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="comment">/* This is passed as the destination address to ip_output_if (not</span></div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="comment">   to ip_output), meaning that an IP header already is constructed</span></div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="comment">   in the pbuf. This is used when TCP retransmits. */</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="ip_8h.html#a2b7dff1859ced5f2be3fc3da231819d7">   58</a></span>&#160;<span class="preprocessor">#define LWIP_IP_HDRINCL  NULL</span></div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160; </div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;<span class="preprocessor">#ifndef LWIP_IP_CHECK_PBUF_REF_COUNT_FOR_TX</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="ip_8h.html#a355679dba1c0d8ef07ce3abcd28e3063">   63</a></span>&#160;<span class="preprocessor">#define LWIP_IP_CHECK_PBUF_REF_COUNT_FOR_TX(p) LWIP_ASSERT(&quot;p-&gt;ref == 1&quot;, (p)-&gt;ref == 1)</span></div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160; </div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<span class="preprocessor">#if LWIP_NETIF_HWADDRHINT</span></div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="preprocessor">#define IP_PCB_ADDRHINT ;u8_t addr_hint</span></div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"><a class="line" href="ip_8h.html#a19a7497f9c87e25b66382e1b92f56382">   69</a></span>&#160;<span class="preprocessor">#define IP_PCB_ADDRHINT</span></div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* LWIP_NETIF_HWADDRHINT */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160; </div>
<div class="line"><a name="l00076"></a><span class="lineno"><a class="line" href="ip_8h.html#a8bdf4b5f674375e76cdd968826d80e53">   76</a></span>&#160;<span class="preprocessor">#define IP_PCB \</span></div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;<span class="preprocessor">  </span><span class="comment">/* ip addresses in network byte order */</span><span class="preprocessor"> \</span></div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;<span class="preprocessor">  ip_addr_t local_ip; \</span></div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;<span class="preprocessor">  ip_addr_t remote_ip; \</span></div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;<span class="preprocessor">   </span><span class="comment">/* Socket options */</span><span class="preprocessor">  \</span></div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;<span class="preprocessor">  u8_t so_options;      \</span></div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="preprocessor">   </span><span class="comment">/* Type Of Service */</span><span class="preprocessor"> \</span></div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="preprocessor">  u8_t tos;              \</span></div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;<span class="preprocessor">  </span><span class="comment">/* Time To Live */</span><span class="preprocessor">     \</span></div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="preprocessor">  u8_t ttl               \</span></div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="preprocessor">  </span><span class="comment">/* link layer address resolution hint */</span><span class="preprocessor"> \</span></div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;<span class="preprocessor">  IP_PCB_ADDRHINT</span></div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160; </div>
<div class="line"><a name="l00089"></a><span class="lineno"><a class="line" href="structip__pcb.html">   89</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structip__pcb.html">ip_pcb</a> {</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="comment">/* Common members of all PCB types */</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"><a class="line" href="structip__pcb.html#a6a4e6df5254e4ed31856463496df206f">   91</a></span>&#160;  <a class="code" href="ip_8h.html#a8bdf4b5f674375e76cdd968826d80e53">IP_PCB</a>;</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;};</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160; </div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;<span class="comment"> * Option flags per-socket. These are the same like SO_XXX in sockets.h</span></div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"><a class="line" href="ip_8h.html#aa40b3366a7939ec3a60e9a7d239575e2">   97</a></span>&#160;<span class="preprocessor">#define SOF_REUSEADDR     0x04U  </span><span class="comment">/* allow local address reuse */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00098"></a><span class="lineno"><a class="line" href="ip_8h.html#a1f7f7efb095c77c06af5c5e8ba558d45">   98</a></span>&#160;<span class="preprocessor">#define SOF_KEEPALIVE     0x08U  </span><span class="comment">/* keep connections alive */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00099"></a><span class="lineno"><a class="line" href="ip_8h.html#ac8c7ccdad2d7d3a264bd8cfc57140ca8">   99</a></span>&#160;<span class="preprocessor">#define SOF_BROADCAST     0x20U  </span><span class="comment">/* permit to send and to receive broadcast messages (see IP_SOF_BROADCAST option) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160; </div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;<span class="comment">/* These flags are inherited (e.g. from a listen-pcb to a connection-pcb): */</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"><a class="line" href="ip_8h.html#ae4bbdf8a2e757d758ec0e1c91b58893f">  102</a></span>&#160;<span class="preprocessor">#define SOF_INHERITED   (SOF_REUSEADDR|SOF_KEEPALIVE)</span></div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160; </div>
<div class="line"><a name="l00105"></a><span class="lineno"><a class="line" href="structip__globals.html">  105</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structip__globals.html">ip_globals</a></div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;{</div>
<div class="line"><a name="l00108"></a><span class="lineno"><a class="line" href="structip__globals.html#a7803dc5950d143e4433a0df689989bab">  108</a></span>&#160;  <span class="keyword">struct </span><a class="code" href="structnetif.html">netif</a> *<a class="code" href="structip__globals.html#a7803dc5950d143e4433a0df689989bab">current_netif</a>;</div>
<div class="line"><a name="l00110"></a><span class="lineno"><a class="line" href="structip__globals.html#a7da899c663b1d560b61d92ba6d544701">  110</a></span>&#160;  <span class="keyword">struct </span><a class="code" href="structnetif.html">netif</a> *<a class="code" href="structip__globals.html#a7da899c663b1d560b61d92ba6d544701">current_input_netif</a>;</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;<span class="preprocessor">#if LWIP_IPV4</span></div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160; </div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;  <span class="keyword">struct </span><a class="code" href="structip__hdr.html">ip_hdr</a> *current_ip4_header;</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;<span class="preprocessor">#if LWIP_IPV6</span></div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160; </div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;  <span class="keyword">struct </span><a class="code" href="structip6__hdr.html">ip6_hdr</a> *current_ip6_header;</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160; </div>
<div class="line"><a name="l00120"></a><span class="lineno"><a class="line" href="structip__globals.html#a17004526e6f1a164c0bab01aeac5e34a">  120</a></span>&#160;  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> <a class="code" href="structip__globals.html#a17004526e6f1a164c0bab01aeac5e34a">current_ip_header_tot_len</a>;</div>
<div class="line"><a name="l00122"></a><span class="lineno"><a class="line" href="structip__globals.html#a04d85a3dc2c417050b3e088fa58a74b0">  122</a></span>&#160;  <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> <a class="code" href="structip__globals.html#a04d85a3dc2c417050b3e088fa58a74b0">current_iphdr_src</a>;</div>
<div class="line"><a name="l00124"></a><span class="lineno"><a class="line" href="structip__globals.html#a0b4e54250c692c638408de54593d2aa1">  124</a></span>&#160;  <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> <a class="code" href="structip__globals.html#a0b4e54250c692c638408de54593d2aa1">current_iphdr_dest</a>;</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;};</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;<span class="keyword">extern</span> <span class="keyword">struct </span><a class="code" href="structip__globals.html">ip_globals</a> <a class="code" href="ip_8h.html#ac944fb6564f181bc90bc7c2b8b00d94c">ip_data</a>;</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160; </div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160; </div>
<div class="line"><a name="l00133"></a><span class="lineno"><a class="line" href="ip_8h.html#aabecef3c7653a9767c79245c44fcab9f">  133</a></span>&#160;<span class="preprocessor">#define ip_current_netif()      (ip_data.current_netif)</span></div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160; </div>
<div class="line"><a name="l00137"></a><span class="lineno"><a class="line" href="ip_8h.html#ae214afa9d3f1b26fc8d538436b8fa3c4">  137</a></span>&#160;<span class="preprocessor">#define ip_current_input_netif() (ip_data.current_input_netif)</span></div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160; </div>
<div class="line"><a name="l00139"></a><span class="lineno"><a class="line" href="ip_8h.html#a2ca15ea285a10982294378cd7b8e83e2">  139</a></span>&#160;<span class="preprocessor">#define ip_current_header_tot_len() (ip_data.current_ip_header_tot_len)</span></div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160; </div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;<span class="preprocessor">#define ip_current_src_addr()   (&amp;ip_data.current_iphdr_src)</span></div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160; </div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;<span class="preprocessor">#define ip_current_dest_addr()  (&amp;ip_data.current_iphdr_dest)</span></div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160; </div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;<span class="preprocessor">#if LWIP_IPV4 &amp;&amp; LWIP_IPV6</span></div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160; </div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;<span class="preprocessor">#define ip4_current_header()     ((const struct ip_hdr*)(ip_data.current_ip4_header))</span></div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160; </div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;<span class="preprocessor">#define ip6_current_header()      ((const struct ip6_hdr*)(ip_data.current_ip6_header))</span></div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160; </div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;<span class="preprocessor">#define ip_current_is_v6()        (ip6_current_header() != NULL)</span></div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160; </div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;<span class="preprocessor">#define ip6_current_src_addr()    (ip_2_ip6(&amp;ip_data.current_iphdr_src))</span></div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160; </div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;<span class="preprocessor">#define ip6_current_dest_addr()   (ip_2_ip6(&amp;ip_data.current_iphdr_dest))</span></div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160; </div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;<span class="preprocessor">#define ip_current_header_proto() (ip_current_is_v6() ? \</span></div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;<span class="preprocessor">                                   IP6H_NEXTH(ip6_current_header()) :\</span></div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;<span class="preprocessor">                                   IPH_PROTO(ip4_current_header()))</span></div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160; </div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;<span class="preprocessor">#define ip_next_header_ptr()     ((const void*)((ip_current_is_v6() ? \</span></div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;<span class="preprocessor">  (const u8_t*)ip6_current_header() : (const u8_t*)ip4_current_header())  + ip_current_header_tot_len()))</span></div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160; </div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;<span class="preprocessor">#define ip4_current_src_addr()     (ip_2_ip4(&amp;ip_data.current_iphdr_src))</span></div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160; </div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;<span class="preprocessor">#define ip4_current_dest_addr()    (ip_2_ip4(&amp;ip_data.current_iphdr_dest))</span></div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160; </div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;<span class="preprocessor">#elif LWIP_IPV4 </span><span class="comment">/* LWIP_IPV4 &amp;&amp; LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160; </div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;<span class="preprocessor">#define ip4_current_header()     ((const struct ip_hdr*)(ip_data.current_ip4_header))</span></div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160; </div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;<span class="preprocessor">#define ip_current_is_v6()        0</span></div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160; </div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;<span class="preprocessor">#define ip_current_header_proto() IPH_PROTO(ip4_current_header())</span></div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160; </div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;<span class="preprocessor">#define ip_next_header_ptr()     ((const void*)((const u8_t*)ip4_current_header() + ip_current_header_tot_len()))</span></div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160; </div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;<span class="preprocessor">#define ip4_current_src_addr()     (&amp;ip_data.current_iphdr_src)</span></div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160; </div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;<span class="preprocessor">#define ip4_current_dest_addr()    (&amp;ip_data.current_iphdr_dest)</span></div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160; </div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;<span class="preprocessor">#elif LWIP_IPV6 </span><span class="comment">/* LWIP_IPV4 &amp;&amp; LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160; </div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;<span class="preprocessor">#define ip6_current_header()      ((const struct ip6_hdr*)(ip_data.current_ip6_header))</span></div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160; </div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;<span class="preprocessor">#define ip_current_is_v6()        1</span></div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160; </div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;<span class="preprocessor">#define ip_current_header_proto() IP6H_NEXTH(ip6_current_header())</span></div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160; </div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;<span class="preprocessor">#define ip_next_header_ptr()     ((const void*)((const u8_t*)ip6_current_header()))</span></div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160; </div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;<span class="preprocessor">#define ip6_current_src_addr()    (&amp;ip_data.current_iphdr_src)</span></div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160; </div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;<span class="preprocessor">#define ip6_current_dest_addr()   (&amp;ip_data.current_iphdr_dest)</span></div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160; </div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160; </div>
<div class="line"><a name="l00210"></a><span class="lineno"><a class="line" href="ip_8h.html#a4e35b7692c228c98e738892f0a215647">  210</a></span>&#160;<span class="preprocessor">#define ip_current_src_addr()    (&amp;ip_data.current_iphdr_src)</span></div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160; </div>
<div class="line"><a name="l00212"></a><span class="lineno"><a class="line" href="ip_8h.html#a9135977868017c3deeec86b525e13997">  212</a></span>&#160;<span class="preprocessor">#define ip_current_dest_addr()   (&amp;ip_data.current_iphdr_dest)</span></div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160; </div>
<div class="line"><a name="l00215"></a><span class="lineno"><a class="line" href="ip_8h.html#a26e077f52de4a97ff89c02415c084518">  215</a></span>&#160;<span class="preprocessor">#define ip_get_option(pcb, opt)   ((pcb)-&gt;so_options &amp; (opt))</span></div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160; </div>
<div class="line"><a name="l00217"></a><span class="lineno"><a class="line" href="ip_8h.html#a13f48cf825c7f074dc05bea54e9d6a93">  217</a></span>&#160;<span class="preprocessor">#define ip_set_option(pcb, opt)   ((pcb)-&gt;so_options |= (opt))</span></div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160; </div>
<div class="line"><a name="l00219"></a><span class="lineno"><a class="line" href="ip_8h.html#a441c63f00c4b0cb69fc34ca6b55307cc">  219</a></span>&#160;<span class="preprocessor">#define ip_reset_option(pcb, opt) ((pcb)-&gt;so_options &amp;= ~(opt))</span></div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160; </div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;<span class="preprocessor">#if LWIP_IPV4 &amp;&amp; LWIP_IPV6</span></div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160; </div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;<span class="preprocessor">#define ip_output(p, src, dest, ttl, tos, proto) \</span></div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;<span class="preprocessor">        (IP_IS_V6(dest) ? \</span></div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;<span class="preprocessor">        ip6_output(p, ip_2_ip6(src), ip_2_ip6(dest), ttl, tos, proto) : \</span></div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;<span class="preprocessor">        ip4_output(p, ip_2_ip4(src), ip_2_ip4(dest), ttl, tos, proto))</span></div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160; </div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;<span class="preprocessor">#define ip_output_if(p, src, dest, ttl, tos, proto, netif) \</span></div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;<span class="preprocessor">        (IP_IS_V6(dest) ? \</span></div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;<span class="preprocessor">        ip6_output_if(p, ip_2_ip6(src), ip_2_ip6(dest), ttl, tos, proto, netif) : \</span></div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;<span class="preprocessor">        ip4_output_if(p, ip_2_ip4(src), ip_2_ip4(dest), ttl, tos, proto, netif))</span></div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160; </div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;<span class="preprocessor">#define ip_output_if_src(p, src, dest, ttl, tos, proto, netif) \</span></div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;<span class="preprocessor">        (IP_IS_V6(dest) ? \</span></div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;<span class="preprocessor">        ip6_output_if_src(p, ip_2_ip6(src), ip_2_ip6(dest), ttl, tos, proto, netif) : \</span></div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;<span class="preprocessor">        ip4_output_if_src(p, ip_2_ip4(src), ip_2_ip4(dest), ttl, tos, proto, netif))</span></div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160; </div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;<span class="preprocessor">#define ip_output_hinted(p, src, dest, ttl, tos, proto, addr_hint) \</span></div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;<span class="preprocessor">        (IP_IS_V6(dest) ? \</span></div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;<span class="preprocessor">        ip6_output_hinted(p, ip_2_ip6(src), ip_2_ip6(dest), ttl, tos, proto, addr_hint) : \</span></div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;<span class="preprocessor">        ip4_output_hinted(p, ip_2_ip4(src), ip_2_ip4(dest), ttl, tos, proto, addr_hint))</span></div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160; </div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;<span class="preprocessor">#define ip_route(src, dest) \</span></div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;<span class="preprocessor">        (IP_IS_V6(dest) ? \</span></div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;<span class="preprocessor">        ip6_route(ip_2_ip6(src), ip_2_ip6(dest)) : \</span></div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;<span class="preprocessor">        ip4_route_src(ip_2_ip4(dest), ip_2_ip4(src)))</span></div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160; </div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;<span class="preprocessor">#define ip_netif_get_local_ip(netif, dest) (IP_IS_V6(dest) ? \</span></div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;<span class="preprocessor">        ip6_netif_get_local_ip(netif, ip_2_ip6(dest)) : \</span></div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;<span class="preprocessor">        ip4_netif_get_local_ip(netif))</span></div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;<span class="preprocessor">#define ip_debug_print(is_ipv6, p) ((is_ipv6) ? ip6_debug_print(p) : ip4_debug_print(p))</span></div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160; </div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;<a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> ip_input(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p, <span class="keyword">struct</span> <a class="code" href="structnetif.html">netif</a> *inp);</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160; </div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;<span class="preprocessor">#elif LWIP_IPV4 </span><span class="comment">/* LWIP_IPV4 &amp;&amp; LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160; </div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;<span class="preprocessor">#define ip_output(p, src, dest, ttl, tos, proto) \</span></div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;<span class="preprocessor">        ip4_output(p, src, dest, ttl, tos, proto)</span></div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;<span class="preprocessor">#define ip_output_if(p, src, dest, ttl, tos, proto, netif) \</span></div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;<span class="preprocessor">        ip4_output_if(p, src, dest, ttl, tos, proto, netif)</span></div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;<span class="preprocessor">#define ip_output_if_src(p, src, dest, ttl, tos, proto, netif) \</span></div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;<span class="preprocessor">        ip4_output_if_src(p, src, dest, ttl, tos, proto, netif)</span></div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;<span class="preprocessor">#define ip_output_hinted(p, src, dest, ttl, tos, proto, addr_hint) \</span></div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;<span class="preprocessor">        ip4_output_hinted(p, src, dest, ttl, tos, proto, addr_hint)</span></div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;<span class="preprocessor">#define ip_route(src, dest) \</span></div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;<span class="preprocessor">        ip4_route_src(dest, src)</span></div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;<span class="preprocessor">#define ip_netif_get_local_ip(netif, dest) \</span></div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;<span class="preprocessor">        ip4_netif_get_local_ip(netif)</span></div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;<span class="preprocessor">#define ip_debug_print(is_ipv6, p) ip4_debug_print(p)</span></div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160; </div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;<span class="preprocessor">#define ip_input ip4_input</span></div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160; </div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;<span class="preprocessor">#elif LWIP_IPV6 </span><span class="comment">/* LWIP_IPV4 &amp;&amp; LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160; </div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;<span class="preprocessor">#define ip_output(p, src, dest, ttl, tos, proto) \</span></div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;<span class="preprocessor">        ip6_output(p, src, dest, ttl, tos, proto)</span></div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;<span class="preprocessor">#define ip_output_if(p, src, dest, ttl, tos, proto, netif) \</span></div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;<span class="preprocessor">        ip6_output_if(p, src, dest, ttl, tos, proto, netif)</span></div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;<span class="preprocessor">#define ip_output_if_src(p, src, dest, ttl, tos, proto, netif) \</span></div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;<span class="preprocessor">        ip6_output_if_src(p, src, dest, ttl, tos, proto, netif)</span></div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;<span class="preprocessor">#define ip_output_hinted(p, src, dest, ttl, tos, proto, addr_hint) \</span></div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;<span class="preprocessor">        ip6_output_hinted(p, src, dest, ttl, tos, proto, addr_hint)</span></div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;<span class="preprocessor">#define ip_route(src, dest) \</span></div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;<span class="preprocessor">        ip6_route(src, dest)</span></div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;<span class="preprocessor">#define ip_netif_get_local_ip(netif, dest) \</span></div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;<span class="preprocessor">        ip6_netif_get_local_ip(netif, dest)</span></div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;<span class="preprocessor">#define ip_debug_print(is_ipv6, p) ip6_debug_print(p)</span></div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160; </div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;<span class="preprocessor">#define ip_input ip6_input</span></div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160; </div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160; </div>
<div class="line"><a name="l00308"></a><span class="lineno"><a class="line" href="ip_8h.html#ae392fc1ebc42a4b08f73d42c04089be9">  308</a></span>&#160;<span class="preprocessor">#define ip_route_get_local_ip(src, dest, netif, ipaddr) do { \</span></div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;<span class="preprocessor">  (netif) = ip_route(src, dest); \</span></div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;<span class="preprocessor">  (ipaddr) = ip_netif_get_local_ip(netif, dest); \</span></div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;<span class="preprocessor">}while(0)</span></div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160; </div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;<span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;}</div>
<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160; </div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* LWIP_HDR_IP_H */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160; </div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160; </div>
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