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<div class="title">ip.h</div> </div>
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<a href="../../da/d2f/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>  </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"> * Copyright (c) 2001-2004 Swedish Institute of Computer Science.</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <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> <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> <span class="comment"> *</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <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> <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> <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> <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> <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> <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> <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> <span class="comment"> *</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</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="l00022"></a><span class="lineno"> 22</span> <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> <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> <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> <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> <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> <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> <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> <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> <span class="comment"> * OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <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> <span class="comment"> *</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> * Author: Adam Dunkels <adam@sics.se></span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#ifndef LWIP_HDR_IP_H</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#define LWIP_HDR_IP_H</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">#include "<a class="code" href="../../dc/dba/opt_8h.html">net/opt.h</a>"</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  </div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="preprocessor">#include "<a class="code" href="../../d4/da4/def_8h.html">net/def.h</a>"</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="preprocessor">#include "<a class="code" href="../../d0/d35/pbuf_8h.html">net/pbuf.h</a>"</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="preprocessor">#include "<a class="code" href="../../de/df7/ip__addr_8h.html">net/ip_addr.h</a>"</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="preprocessor">#include "<a class="code" href="../../d6/d40/err_8h.html">net/err.h</a>"</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="preprocessor">#include "<a class="code" href="../../d9/d69/netif_8h.html">net/netif.h</a>"</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="preprocessor">#include "<a class="code" href="../../d6/da5/ip4_8h.html">net/ip4.h</a>"</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="preprocessor">#include "<a class="code" href="../../d0/dca/ip6_8h.html">net/ip6.h</a>"</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="preprocessor">#include "<a class="code" href="../../d4/d19/prot_2ip_8h.html">net/prot/ip.h</a>"</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  </div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="keyword">extern</span> <span class="stringliteral">"C"</span> {</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  </div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <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> <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> <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="../../da/d2f/ip_8h.html#a2b7dff1859ced5f2be3fc3da231819d7"> 58</a></span> <span class="preprocessor">#define LWIP_IP_HDRINCL NULL</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  </div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <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="../../da/d2f/ip_8h.html#a355679dba1c0d8ef07ce3abcd28e3063"> 63</a></span> <span class="preprocessor">#define LWIP_IP_CHECK_PBUF_REF_COUNT_FOR_TX(p) LWIP_ASSERT("p->ref == 1", (p)->ref == 1)</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="preprocessor">#endif</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="preprocessor">#if LWIP_NETIF_HWADDRHINT</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <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> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"><a class="line" href="../../da/d2f/ip_8h.html#a19a7497f9c87e25b66382e1b92f56382"> 69</a></span> <span class="preprocessor">#define IP_PCB_ADDRHINT</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <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>  </div>
<div class="line"><a name="l00076"></a><span class="lineno"><a class="line" href="../../da/d2f/ip_8h.html#a8bdf4b5f674375e76cdd968826d80e53"> 76</a></span> <span class="preprocessor">#define IP_PCB \</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <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> <span class="preprocessor"> ip_addr_t local_ip; \</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="preprocessor"> ip_addr_t remote_ip; \</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <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> <span class="preprocessor"> u8_t so_options; \</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <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> <span class="preprocessor"> u8_t tos; \</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <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> <span class="preprocessor"> u8_t ttl \</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <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> <span class="preprocessor"> IP_PCB_ADDRHINT</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  </div>
<div class="line"><a name="l00089"></a><span class="lineno"><a class="line" href="../../d7/dc3/structip__pcb.html"> 89</a></span> <span class="keyword">struct </span><a class="code" href="../../d7/dc3/structip__pcb.html">ip_pcb</a> {</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <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="../../d7/dc3/structip__pcb.html#a6a4e6df5254e4ed31856463496df206f"> 91</a></span>  <a class="code" href="../../da/d2f/ip_8h.html#a8bdf4b5f674375e76cdd968826d80e53">IP_PCB</a>;</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> };</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  </div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <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> <span class="comment"> */</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"><a class="line" href="../../da/d2f/ip_8h.html#aa40b3366a7939ec3a60e9a7d239575e2"> 97</a></span> <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="../../da/d2f/ip_8h.html#a1f7f7efb095c77c06af5c5e8ba558d45"> 98</a></span> <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="../../da/d2f/ip_8h.html#ac8c7ccdad2d7d3a264bd8cfc57140ca8"> 99</a></span> <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>  </div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <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="../../da/d2f/ip_8h.html#ae4bbdf8a2e757d758ec0e1c91b58893f"> 102</a></span> <span class="preprocessor">#define SOF_INHERITED (SOF_REUSEADDR|SOF_KEEPALIVE)</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  </div>
<div class="line"><a name="l00105"></a><span class="lineno"><a class="line" href="../../d4/dc7/structip__globals.html"> 105</a></span> <span class="keyword">struct </span><a class="code" href="../../d4/dc7/structip__globals.html">ip_globals</a></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> {</div>
<div class="line"><a name="l00108"></a><span class="lineno"><a class="line" href="../../d4/dc7/structip__globals.html#a7803dc5950d143e4433a0df689989bab"> 108</a></span>  <span class="keyword">struct </span><a class="code" href="../../d2/dd6/structnetif.html">netif</a> *<a class="code" href="../../d4/dc7/structip__globals.html#a7803dc5950d143e4433a0df689989bab">current_netif</a>;</div>
<div class="line"><a name="l00110"></a><span class="lineno"><a class="line" href="../../d4/dc7/structip__globals.html#a7da899c663b1d560b61d92ba6d544701"> 110</a></span>  <span class="keyword">struct </span><a class="code" href="../../d2/dd6/structnetif.html">netif</a> *<a class="code" href="../../d4/dc7/structip__globals.html#a7da899c663b1d560b61d92ba6d544701">current_input_netif</a>;</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="preprocessor">#if LWIP_IPV4</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  </div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keyword">struct </span><a class="code" href="../../da/d9b/structip__hdr.html">ip_hdr</a> *current_ip4_header;</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <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> <span class="preprocessor">#if LWIP_IPV6</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  </div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keyword">struct </span><a class="code" href="../../d2/d9c/structip6__hdr.html">ip6_hdr</a> *current_ip6_header;</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <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>  </div>
<div class="line"><a name="l00120"></a><span class="lineno"><a class="line" href="../../d4/dc7/structip__globals.html#a17004526e6f1a164c0bab01aeac5e34a"> 120</a></span>  <a class="code" href="../../de/d8c/group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> <a class="code" href="../../d4/dc7/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="../../d4/dc7/structip__globals.html#a04d85a3dc2c417050b3e088fa58a74b0"> 122</a></span>  <a class="code" href="../../de/df7/ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> <a class="code" href="../../d4/dc7/structip__globals.html#a04d85a3dc2c417050b3e088fa58a74b0">current_iphdr_src</a>;</div>
<div class="line"><a name="l00124"></a><span class="lineno"><a class="line" href="../../d4/dc7/structip__globals.html#a0b4e54250c692c638408de54593d2aa1"> 124</a></span>  <a class="code" href="../../de/df7/ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> <a class="code" href="../../d4/dc7/structip__globals.html#a0b4e54250c692c638408de54593d2aa1">current_iphdr_dest</a>;</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> };</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="keyword">extern</span> <span class="keyword">struct </span><a class="code" href="../../d4/dc7/structip__globals.html">ip_globals</a> <a class="code" href="../../da/d2f/ip_8h.html#ac944fb6564f181bc90bc7c2b8b00d94c">ip_data</a>;</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  </div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  </div>
<div class="line"><a name="l00133"></a><span class="lineno"><a class="line" href="../../da/d2f/ip_8h.html#aabecef3c7653a9767c79245c44fcab9f"> 133</a></span> <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>  </div>
<div class="line"><a name="l00137"></a><span class="lineno"><a class="line" href="../../da/d2f/ip_8h.html#ae214afa9d3f1b26fc8d538436b8fa3c4"> 137</a></span> <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>  </div>
<div class="line"><a name="l00139"></a><span class="lineno"><a class="line" href="../../da/d2f/ip_8h.html#a2ca15ea285a10982294378cd7b8e83e2"> 139</a></span> <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>  </div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="preprocessor">#define ip_current_src_addr() (&ip_data.current_iphdr_src)</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  </div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="preprocessor">#define ip_current_dest_addr() (&ip_data.current_iphdr_dest)</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  </div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="preprocessor">#if LWIP_IPV4 && LWIP_IPV6</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  </div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <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>  </div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <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>  </div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <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>  </div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="preprocessor">#define ip6_current_src_addr() (ip_2_ip6(&ip_data.current_iphdr_src))</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  </div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="preprocessor">#define ip6_current_dest_addr() (ip_2_ip6(&ip_data.current_iphdr_dest))</span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  </div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <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> <span class="preprocessor"> IP6H_NEXTH(ip6_current_header()) :\</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="preprocessor"> IPH_PROTO(ip4_current_header()))</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  </div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <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> <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>  </div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="preprocessor">#define ip4_current_src_addr() (ip_2_ip4(&ip_data.current_iphdr_src))</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  </div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="preprocessor">#define ip4_current_dest_addr() (ip_2_ip4(&ip_data.current_iphdr_dest))</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  </div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="preprocessor">#elif LWIP_IPV4 </span><span class="comment">/* LWIP_IPV4 && LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  </div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <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>  </div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> <span class="preprocessor">#define ip_current_is_v6() 0</span></div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  </div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <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>  </div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> <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>  </div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <span class="preprocessor">#define ip4_current_src_addr() (&ip_data.current_iphdr_src)</span></div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  </div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="preprocessor">#define ip4_current_dest_addr() (&ip_data.current_iphdr_dest)</span></div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  </div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> <span class="preprocessor">#elif LWIP_IPV6 </span><span class="comment">/* LWIP_IPV4 && LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  </div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> <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>  </div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> <span class="preprocessor">#define ip_current_is_v6() 1</span></div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  </div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <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>  </div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <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>  </div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> <span class="preprocessor">#define ip6_current_src_addr() (&ip_data.current_iphdr_src)</span></div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  </div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> <span class="preprocessor">#define ip6_current_dest_addr() (&ip_data.current_iphdr_dest)</span></div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  </div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> <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>  </div>
<div class="line"><a name="l00210"></a><span class="lineno"><a class="line" href="../../da/d2f/ip_8h.html#a4e35b7692c228c98e738892f0a215647"> 210</a></span> <span class="preprocessor">#define ip_current_src_addr() (&ip_data.current_iphdr_src)</span></div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  </div>
<div class="line"><a name="l00212"></a><span class="lineno"><a class="line" href="../../da/d2f/ip_8h.html#a9135977868017c3deeec86b525e13997"> 212</a></span> <span class="preprocessor">#define ip_current_dest_addr() (&ip_data.current_iphdr_dest)</span></div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  </div>
<div class="line"><a name="l00215"></a><span class="lineno"><a class="line" href="../../da/d2f/ip_8h.html#a26e077f52de4a97ff89c02415c084518"> 215</a></span> <span class="preprocessor">#define ip_get_option(pcb, opt) ((pcb)->so_options & (opt))</span></div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  </div>
<div class="line"><a name="l00217"></a><span class="lineno"><a class="line" href="../../da/d2f/ip_8h.html#a13f48cf825c7f074dc05bea54e9d6a93"> 217</a></span> <span class="preprocessor">#define ip_set_option(pcb, opt) ((pcb)->so_options |= (opt))</span></div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  </div>
<div class="line"><a name="l00219"></a><span class="lineno"><a class="line" href="../../da/d2f/ip_8h.html#a441c63f00c4b0cb69fc34ca6b55307cc"> 219</a></span> <span class="preprocessor">#define ip_reset_option(pcb, opt) ((pcb)->so_options &= ~(opt))</span></div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  </div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> <span class="preprocessor">#if LWIP_IPV4 && LWIP_IPV6</span></div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  </div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> <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> <span class="preprocessor"> (IP_IS_V6(dest) ? \</span></div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span> <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> <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>  </div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> <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> <span class="preprocessor"> (IP_IS_V6(dest) ? \</span></div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span> <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> <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>  </div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span> <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> <span class="preprocessor"> (IP_IS_V6(dest) ? \</span></div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span> <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> <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>  </div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span> <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> <span class="preprocessor"> (IP_IS_V6(dest) ? \</span></div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span> <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> <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>  </div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span> <span class="preprocessor">#define ip_route(src, dest) \</span></div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span> <span class="preprocessor"> (IP_IS_V6(dest) ? \</span></div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> <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> <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>  </div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span> <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> <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> <span class="preprocessor"> ip4_netif_get_local_ip(netif))</span></div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span> <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>  </div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span> <a class="code" href="../../d2/de7/group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> ip_input(<span class="keyword">struct</span> <a class="code" href="../../d9/db8/structpbuf.html">pbuf</a> *p, <span class="keyword">struct</span> <a class="code" href="../../d2/dd6/structnetif.html">netif</a> *inp);</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  </div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> <span class="preprocessor">#elif LWIP_IPV4 </span><span class="comment">/* LWIP_IPV4 && LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  </div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span> <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> <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> <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> <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> <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> <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> <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> <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> <span class="preprocessor">#define ip_route(src, dest) \</span></div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span> <span class="preprocessor"> ip4_route_src(dest, src)</span></div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span> <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> <span class="preprocessor"> ip4_netif_get_local_ip(netif)</span></div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span> <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>  </div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span> <span class="preprocessor">#define ip_input ip4_input</span></div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  </div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span> <span class="preprocessor">#elif LWIP_IPV6 </span><span class="comment">/* LWIP_IPV4 && LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  </div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span> <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> <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> <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> <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> <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> <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> <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> <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> <span class="preprocessor">#define ip_route(src, dest) \</span></div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span> <span class="preprocessor"> ip6_route(src, dest)</span></div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span> <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> <span class="preprocessor"> ip6_netif_get_local_ip(netif, dest)</span></div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span> <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>  </div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span> <span class="preprocessor">#define ip_input ip6_input</span></div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  </div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span> <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>  </div>
<div class="line"><a name="l00308"></a><span class="lineno"><a class="line" href="../../da/d2f/ip_8h.html#ae392fc1ebc42a4b08f73d42c04089be9"> 308</a></span> <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> <span class="preprocessor"> (netif) = ip_route(src, dest); \</span></div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span> <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> <span class="preprocessor">}while(0)</span></div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  </div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span> <span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span> }</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  </div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span> <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>  </div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  </div>
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<div class="ttc" id="astructnetif_html"><div class="ttname"><a href="../../d2/dd6/structnetif.html">netif</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d9/d69/netif_8h_source.html#l00233">netif.h:233</a></div></div>
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<div class="ttc" id="astructip__pcb_html"><div class="ttname"><a href="../../d7/dc3/structip__pcb.html">ip_pcb</a></div><div class="ttdef"><b>Definition:</b> <a href="../../da/d2f/ip_8h_source.html#l00089">ip.h:89</a></div></div>
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<div class="ttc" id="aprot_2ip_8h_html"><div class="ttname"><a href="../../d4/d19/prot_2ip_8h.html">ip.h</a></div></div>
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<div class="ttc" id="aip4_8h_html"><div class="ttname"><a href="../../d6/da5/ip4_8h.html">ip4.h</a></div></div>
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<div class="ttc" id="astructip6__hdr_html"><div class="ttname"><a href="../../d2/d9c/structip6__hdr.html">ip6_hdr</a></div><div class="ttdef"><b>Definition:</b> <a href="../../de/d63/prot_2ip6_8h_source.html#l00080">ip6.h:80</a></div></div>
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