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<div id="projectbrief">Lightweight IP stack</div>
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<div class="textblock"><code>#include &quot;<a class="el" href="opt_8h.html">lwip/opt.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="def_8h.html">lwip/def.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="pbuf_8h.html">lwip/pbuf.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="ip__addr_8h.html">lwip/ip_addr.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="err_8h.html">lwip/err.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="netif_8h.html">lwip/netif.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="ip4_8h.html">lwip/ip4.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="ip6_8h.html">lwip/ip6.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="prot_2ip_8h.html">lwip/prot/ip.h</a>&quot;</code><br />
</div><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="nested-classes" name="nested-classes"></a>
Data Structures</h2></td></tr>
<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structip__globals.html">ip_globals</a></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="define-members" name="define-members"></a>
Macros</h2></td></tr>
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<tr class="memitem:a4e35b7692c228c98e738892f0a215647" id="r_a4e35b7692c228c98e738892f0a215647"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a4e35b7692c228c98e738892f0a215647">ip_current_src_addr</a>()</td></tr>
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<tr class="memitem:a9135977868017c3deeec86b525e13997" id="r_a9135977868017c3deeec86b525e13997"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#a9135977868017c3deeec86b525e13997">ip_current_dest_addr</a>()</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="func-members" name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:ga3c420dab0c6760df099a2d688fa42a26" id="r_ga3c420dab0c6760df099a2d688fa42a26"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__lwip__nosys.html#ga3c420dab0c6760df099a2d688fa42a26">ip_input</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *p, struct <a class="el" href="structnetif.html">netif</a> *inp)</td></tr>
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Variables</h2></td></tr>
<tr class="memitem:ac944fb6564f181bc90bc7c2b8b00d94c" id="r_ac944fb6564f181bc90bc7c2b8b00d94c"><td class="memItemLeft" align="right" valign="top">struct <a class="el" href="structip__globals.html">ip_globals</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#ac944fb6564f181bc90bc7c2b8b00d94c">ip_data</a></td></tr>
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</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>IP API </p>
</div><h2 class="groupheader">Macro Definition Documentation</h2>
<a id="a2833c8d59910dd7c0e87ab3bb174e720" name="a2833c8d59910dd7c0e87ab3bb174e720"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a2833c8d59910dd7c0e87ab3bb174e720">&#9670;&#160;</a></span>ip4_current_dest_addr</h2>
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<td class="memname">#define ip4_current_dest_addr</td>
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<b>Value:</b><div class="fragment"><div class="line">(<a class="code hl_define" href="group__ip4addr.html#gad7268a496b7e3f872efecd859eba6f03">ip_2_ip4</a>(&amp;<a class="code hl_variable" href="#ac944fb6564f181bc90bc7c2b8b00d94c">ip_data</a>.<a class="code hl_variable" href="structip__globals.html#a0b4e54250c692c638408de54593d2aa1">current_iphdr_dest</a>))</div>
<div class="ttc" id="agroup__ip4addr_html_gad7268a496b7e3f872efecd859eba6f03"><div class="ttname"><a href="group__ip4addr.html#gad7268a496b7e3f872efecd859eba6f03">ip_2_ip4</a></div><div class="ttdeci">#define ip_2_ip4(ipaddr)</div><div class="ttdef"><b>Definition</b> ip_addr.h:120</div></div>
<div class="ttc" id="aip_8h_html_ac944fb6564f181bc90bc7c2b8b00d94c"><div class="ttname"><a href="#ac944fb6564f181bc90bc7c2b8b00d94c">ip_data</a></div><div class="ttdeci">struct ip_globals ip_data</div><div class="ttdef"><b>Definition</b> ip.c:64</div></div>
<div class="ttc" id="astructip__globals_html_a0b4e54250c692c638408de54593d2aa1"><div class="ttname"><a href="structip__globals.html#a0b4e54250c692c638408de54593d2aa1">ip_globals::current_iphdr_dest</a></div><div class="ttdeci">ip_addr_t current_iphdr_dest</div><div class="ttdef"><b>Definition</b> ip.h:126</div></div>
</div><!-- fragment --><p>Destination IP4 address of current_header </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a3ce482b7e08282effd670001198ecd87">&#9670;&#160;</a></span>ip4_current_header</h2>
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<td class="memname">#define ip4_current_header</td>
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<b>Value:</b><div class="fragment"><div class="line"><a class="code hl_variable" href="#ac944fb6564f181bc90bc7c2b8b00d94c">ip_data</a>.<a class="code hl_variable" href="structip__globals.html#a2e810f97cf3e8e855e3baafc3be8c0d4">current_ip4_header</a></div>
<div class="ttc" id="astructip__globals_html_a2e810f97cf3e8e855e3baafc3be8c0d4"><div class="ttname"><a href="structip__globals.html#a2e810f97cf3e8e855e3baafc3be8c0d4">ip_globals::current_ip4_header</a></div><div class="ttdeci">const struct ip_hdr * current_ip4_header</div><div class="ttdef"><b>Definition</b> ip.h:115</div></div>
</div><!-- fragment --><p>Get the IPv4 header of the current packet. This function must only be called from a receive callback (udp_recv, raw_recv, tcp_accept). It will return NULL otherwise. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ad2a62f96b9431a79f0258dc13058b160">&#9670;&#160;</a></span>ip4_current_src_addr</h2>
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<td class="memname">#define ip4_current_src_addr</td>
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<b>Value:</b><div class="fragment"><div class="line">(<a class="code hl_define" href="group__ip4addr.html#gad7268a496b7e3f872efecd859eba6f03">ip_2_ip4</a>(&amp;<a class="code hl_variable" href="#ac944fb6564f181bc90bc7c2b8b00d94c">ip_data</a>.<a class="code hl_variable" href="structip__globals.html#a04d85a3dc2c417050b3e088fa58a74b0">current_iphdr_src</a>))</div>
<div class="ttc" id="astructip__globals_html_a04d85a3dc2c417050b3e088fa58a74b0"><div class="ttname"><a href="structip__globals.html#a04d85a3dc2c417050b3e088fa58a74b0">ip_globals::current_iphdr_src</a></div><div class="ttdeci">ip_addr_t current_iphdr_src</div><div class="ttdef"><b>Definition</b> ip.h:124</div></div>
</div><!-- fragment --><p>Source IP4 address of current_header </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a176525c2192d37ee9eaeba8012c5d9c0">&#9670;&#160;</a></span>ip6_current_dest_addr</h2>
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<td class="memname">#define ip6_current_dest_addr</td>
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<b>Value:</b><div class="fragment"><div class="line">(<a class="code hl_define" href="group__ip6addr.html#ga06e75bcd198012b5ba39480c233608bd">ip_2_ip6</a>(&amp;<a class="code hl_variable" href="#ac944fb6564f181bc90bc7c2b8b00d94c">ip_data</a>.<a class="code hl_variable" href="structip__globals.html#a0b4e54250c692c638408de54593d2aa1">current_iphdr_dest</a>))</div>
<div class="ttc" id="agroup__ip6addr_html_ga06e75bcd198012b5ba39480c233608bd"><div class="ttname"><a href="group__ip6addr.html#ga06e75bcd198012b5ba39480c233608bd">ip_2_ip6</a></div><div class="ttdeci">#define ip_2_ip6(ipaddr)</div><div class="ttdef"><b>Definition</b> ip_addr.h:116</div></div>
</div><!-- fragment --><p>Destination IPv6 address of current_header </p>
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<h2 class="memtitle"><span class="permalink"><a href="#af9bf74750c9d7a219ee88d240300fe69">&#9670;&#160;</a></span>ip6_current_header</h2>
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<td class="memname">#define ip6_current_header</td>
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<b>Value:</b><div class="fragment"><div class="line">((<span class="keyword">const</span> <span class="keyword">struct </span><a class="code hl_struct" href="structip6__hdr.html">ip6_hdr</a>*)(<a class="code hl_variable" href="#ac944fb6564f181bc90bc7c2b8b00d94c">ip_data</a>.<a class="code hl_variable" href="structip__globals.html#aa5cfc3ac29dc746a4cbe844206b0ed41">current_ip6_header</a>))</div>
<div class="ttc" id="astructip6__hdr_html"><div class="ttname"><a href="structip6__hdr.html">ip6_hdr</a></div><div class="ttdef"><b>Definition</b> ip6.h:82</div></div>
<div class="ttc" id="astructip__globals_html_aa5cfc3ac29dc746a4cbe844206b0ed41"><div class="ttname"><a href="structip__globals.html#aa5cfc3ac29dc746a4cbe844206b0ed41">ip_globals::current_ip6_header</a></div><div class="ttdeci">struct ip6_hdr * current_ip6_header</div><div class="ttdef"><b>Definition</b> ip.h:119</div></div>
</div><!-- fragment --><p>Get the IPv6 header of the current packet. This function must only be called from a receive callback (udp_recv, raw_recv, tcp_accept). It will return NULL otherwise. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ac40a9e4a21ecf5bb39813bb6ca5bb245">&#9670;&#160;</a></span>ip6_current_src_addr</h2>
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<td class="memname">#define ip6_current_src_addr</td>
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<b>Value:</b><div class="fragment"><div class="line">(<a class="code hl_define" href="group__ip6addr.html#ga06e75bcd198012b5ba39480c233608bd">ip_2_ip6</a>(&amp;<a class="code hl_variable" href="#ac944fb6564f181bc90bc7c2b8b00d94c">ip_data</a>.<a class="code hl_variable" href="structip__globals.html#a04d85a3dc2c417050b3e088fa58a74b0">current_iphdr_src</a>))</div>
</div><!-- fragment --><p>Source IPv6 address of current_header </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a9135977868017c3deeec86b525e13997">&#9670;&#160;</a></span>ip_current_dest_addr <span class="overload">[1/2]</span></h2>
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<td class="memname">#define ip_current_dest_addr</td>
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<b>Value:</b><div class="fragment"><div class="line">(&amp;<a class="code hl_variable" href="#ac944fb6564f181bc90bc7c2b8b00d94c">ip_data</a>.<a class="code hl_variable" href="structip__globals.html#a0b4e54250c692c638408de54593d2aa1">current_iphdr_dest</a>)</div>
</div><!-- fragment --><p>Destination IP address of current_header</p>
<p>Union destination address of current_header </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a9135977868017c3deeec86b525e13997">&#9670;&#160;</a></span>ip_current_dest_addr <span class="overload">[2/2]</span></h2>
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<td class="memname">#define ip_current_dest_addr</td>
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<b>Value:</b><div class="fragment"><div class="line">(&amp;<a class="code hl_variable" href="#ac944fb6564f181bc90bc7c2b8b00d94c">ip_data</a>.<a class="code hl_variable" href="structip__globals.html#a0b4e54250c692c638408de54593d2aa1">current_iphdr_dest</a>)</div>
</div><!-- fragment --><p>Destination IP address of current_header</p>
<p>Union destination address of current_header </p>
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<h2 class="memtitle"><span class="permalink"><a href="#af27c43c23b59d68a8463cd5ad035b20f">&#9670;&#160;</a></span>ip_current_header_proto</h2>
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<td class="memname">#define ip_current_header_proto</td>
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<b>Value:</b><div class="fragment"><div class="line"> (<a class="code hl_define" href="#abc56623d434a204298a4e98352af1c9d">ip_current_is_v6</a>() ? \</div>
<div class="line"> IP6H_NEXTH(<a class="code hl_define" href="#af9bf74750c9d7a219ee88d240300fe69">ip6_current_header</a>()) :\</div>
<div class="line"> IPH_PROTO(<a class="code hl_define" href="#a3ce482b7e08282effd670001198ecd87">ip4_current_header</a>()))</div>
<div class="ttc" id="aip_8h_html_a3ce482b7e08282effd670001198ecd87"><div class="ttname"><a href="#a3ce482b7e08282effd670001198ecd87">ip4_current_header</a></div><div class="ttdeci">#define ip4_current_header()</div><div class="ttdef"><b>Definition</b> ip.h:151</div></div>
<div class="ttc" id="aip_8h_html_abc56623d434a204298a4e98352af1c9d"><div class="ttname"><a href="#abc56623d434a204298a4e98352af1c9d">ip_current_is_v6</a></div><div class="ttdeci">#define ip_current_is_v6()</div><div class="ttdef"><b>Definition</b> ip.h:157</div></div>
<div class="ttc" id="aip_8h_html_af9bf74750c9d7a219ee88d240300fe69"><div class="ttname"><a href="#af9bf74750c9d7a219ee88d240300fe69">ip6_current_header</a></div><div class="ttdeci">#define ip6_current_header()</div><div class="ttdef"><b>Definition</b> ip.h:155</div></div>
</div><!-- fragment --><p>Get the transport layer protocol </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a2ca15ea285a10982294378cd7b8e83e2">&#9670;&#160;</a></span>ip_current_header_tot_len</h2>
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<td class="memname">#define ip_current_header_tot_len</td>
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<b>Value:</b><div class="fragment"><div class="line">(<a class="code hl_variable" href="#ac944fb6564f181bc90bc7c2b8b00d94c">ip_data</a>.<a class="code hl_variable" href="structip__globals.html#a17004526e6f1a164c0bab01aeac5e34a">current_ip_header_tot_len</a>)</div>
<div class="ttc" id="astructip__globals_html_a17004526e6f1a164c0bab01aeac5e34a"><div class="ttname"><a href="structip__globals.html#a17004526e6f1a164c0bab01aeac5e34a">ip_globals::current_ip_header_tot_len</a></div><div class="ttdeci">u16_t current_ip_header_tot_len</div><div class="ttdef"><b>Definition</b> ip.h:122</div></div>
</div><!-- fragment --><p>Total header length of ip(6)_current_header() (i.e. after this, the UDP/TCP header starts) </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ae214afa9d3f1b26fc8d538436b8fa3c4">&#9670;&#160;</a></span>ip_current_input_netif</h2>
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<td class="memname">#define ip_current_input_netif</td>
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<b>Value:</b><div class="fragment"><div class="line">(<a class="code hl_variable" href="#ac944fb6564f181bc90bc7c2b8b00d94c">ip_data</a>.<a class="code hl_variable" href="structip__globals.html#a7da899c663b1d560b61d92ba6d544701">current_input_netif</a>)</div>
<div class="ttc" id="astructip__globals_html_a7da899c663b1d560b61d92ba6d544701"><div class="ttname"><a href="structip__globals.html#a7da899c663b1d560b61d92ba6d544701">ip_globals::current_input_netif</a></div><div class="ttdeci">struct netif * current_input_netif</div><div class="ttdef"><b>Definition</b> ip.h:112</div></div>
</div><!-- fragment --><p>Get the interface that received the current packet. This function must only be called from a receive callback (udp_recv, raw_recv, tcp_accept). It will return NULL otherwise. </p>
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<a id="abc56623d434a204298a4e98352af1c9d" name="abc56623d434a204298a4e98352af1c9d"></a>
<h2 class="memtitle"><span class="permalink"><a href="#abc56623d434a204298a4e98352af1c9d">&#9670;&#160;</a></span>ip_current_is_v6</h2>
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<td class="memname">#define ip_current_is_v6</td>
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<b>Value:</b><div class="fragment"><div class="line">(<a class="code hl_define" href="#af9bf74750c9d7a219ee88d240300fe69">ip6_current_header</a>() != NULL)</div>
</div><!-- fragment --><p>Returns TRUE if the current IP input packet is IPv6, FALSE if it is IPv4 </p>
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<h2 class="memtitle"><span class="permalink"><a href="#aabecef3c7653a9767c79245c44fcab9f">&#9670;&#160;</a></span>ip_current_netif</h2>
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<td class="memname">#define ip_current_netif</td>
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<b>Value:</b><div class="fragment"><div class="line">(<a class="code hl_variable" href="#ac944fb6564f181bc90bc7c2b8b00d94c">ip_data</a>.<a class="code hl_variable" href="structip__globals.html#a7803dc5950d143e4433a0df689989bab">current_netif</a>)</div>
<div class="ttc" id="astructip__globals_html_a7803dc5950d143e4433a0df689989bab"><div class="ttname"><a href="structip__globals.html#a7803dc5950d143e4433a0df689989bab">ip_globals::current_netif</a></div><div class="ttdeci">struct netif * current_netif</div><div class="ttdef"><b>Definition</b> ip.h:110</div></div>
</div><!-- fragment --><p>Get the interface that accepted the current packet. This may or may not be the receiving netif, depending on your netif/network setup. This function must only be called from a receive callback (udp_recv, raw_recv, tcp_accept). It will return NULL otherwise. </p>
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<a id="a4e35b7692c228c98e738892f0a215647" name="a4e35b7692c228c98e738892f0a215647"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a4e35b7692c228c98e738892f0a215647">&#9670;&#160;</a></span>ip_current_src_addr <span class="overload">[1/2]</span></h2>
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<td class="memname">#define ip_current_src_addr</td>
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<b>Value:</b><div class="fragment"><div class="line">(&amp;<a class="code hl_variable" href="#ac944fb6564f181bc90bc7c2b8b00d94c">ip_data</a>.<a class="code hl_variable" href="structip__globals.html#a04d85a3dc2c417050b3e088fa58a74b0">current_iphdr_src</a>)</div>
</div><!-- fragment --><p>Source IP address of current_header</p>
<p>Union source address of current_header </p>
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<a id="a4e35b7692c228c98e738892f0a215647" name="a4e35b7692c228c98e738892f0a215647"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a4e35b7692c228c98e738892f0a215647">&#9670;&#160;</a></span>ip_current_src_addr <span class="overload">[2/2]</span></h2>
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<td class="memname">#define ip_current_src_addr</td>
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<b>Value:</b><div class="fragment"><div class="line">(&amp;<a class="code hl_variable" href="#ac944fb6564f181bc90bc7c2b8b00d94c">ip_data</a>.<a class="code hl_variable" href="structip__globals.html#a04d85a3dc2c417050b3e088fa58a74b0">current_iphdr_src</a>)</div>
</div><!-- fragment --><p>Source IP address of current_header</p>
<p>Union source address of current_header </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a26e077f52de4a97ff89c02415c084518">&#9670;&#160;</a></span>ip_get_option</h2>
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<td class="memname">#define ip_get_option</td>
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<td class="paramtype"></td> <td class="paramname"><span class="paramname"><em>pcb</em></span>, </td>
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<td class="paramtype"></td> <td class="paramname"><span class="paramname"><em>opt</em></span>&#160;)</td>
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<b>Value:</b><div class="fragment"><div class="line">((pcb)-&gt;so_options &amp; (opt))</div>
</div><!-- fragment --><p>Gets an IP pcb option (SOF_* flags) </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a68d25b5924b768cbf2f1a78bbabfce26">&#9670;&#160;</a></span>ip_next_header_ptr</h2>
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<td class="memname">#define ip_next_header_ptr</td>
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<b>Value:</b><div class="fragment"><div class="line"> ((<span class="keyword">const</span> <span class="keywordtype">void</span>*)((<a class="code hl_define" href="#abc56623d434a204298a4e98352af1c9d">ip_current_is_v6</a>() ? \</div>
<div class="line"> (<span class="keyword">const</span> u8_t*)<a class="code hl_define" href="#af9bf74750c9d7a219ee88d240300fe69">ip6_current_header</a>() : (<span class="keyword">const</span> u8_t*)<a class="code hl_define" href="#a3ce482b7e08282effd670001198ecd87">ip4_current_header</a>()) + <a class="code hl_define" href="#a2ca15ea285a10982294378cd7b8e83e2">ip_current_header_tot_len</a>()))</div>
<div class="ttc" id="aip_8h_html_a2ca15ea285a10982294378cd7b8e83e2"><div class="ttname"><a href="#a2ca15ea285a10982294378cd7b8e83e2">ip_current_header_tot_len</a></div><div class="ttdeci">#define ip_current_header_tot_len()</div><div class="ttdef"><b>Definition</b> ip.h:141</div></div>
</div><!-- fragment --><p>Get the transport layer header </p>
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<h2 class="memtitle"><span class="permalink"><a href="#accbc01f37dd426a66de41693a5450207">&#9670;&#160;</a></span>ip_output_hinted</h2>
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<td class="memname">#define ip_output_hinted</td>
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<td class="paramtype"></td> <td class="paramname"><span class="paramname"><em>src</em></span>, </td>
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<td class="paramtype"></td> <td class="paramname"><span class="paramname"><em>dest</em></span>, </td>
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<td class="paramtype"></td> <td class="paramname"><span class="paramname"><em>ttl</em></span>, </td>
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<td class="paramtype"></td> <td class="paramname"><span class="paramname"><em>tos</em></span>, </td>
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<td class="paramtype"></td> <td class="paramname"><span class="paramname"><em>proto</em></span>, </td>
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<td class="paramtype"></td> <td class="paramname"><span class="paramname"><em>netif_hint</em></span>&#160;)</td>
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<b>Value:</b><div class="fragment"><div class="line"> (IP_IS_V6(dest) ? \</div>
<div class="line"> ip6_output_hinted(p, <a class="code hl_define" href="group__ip6addr.html#ga06e75bcd198012b5ba39480c233608bd">ip_2_ip6</a>(src), <a class="code hl_define" href="group__ip6addr.html#ga06e75bcd198012b5ba39480c233608bd">ip_2_ip6</a>(dest), ttl, tos, proto, netif_hint) : \</div>
<div class="line"> ip4_output_hinted(p, <a class="code hl_define" href="group__ip4addr.html#gad7268a496b7e3f872efecd859eba6f03">ip_2_ip4</a>(src), <a class="code hl_define" href="group__ip4addr.html#gad7268a496b7e3f872efecd859eba6f03">ip_2_ip4</a>(dest), ttl, tos, proto, netif_hint))</div>
</div><!-- fragment --><p>Output IP packet with netif_hint </p>
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<h2 class="memtitle"><span class="permalink"><a href="#aac608b92f8f226c3574d6bb855f12496">&#9670;&#160;</a></span>ip_output_if_hdrincl</h2>
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<td class="memname">#define ip_output_if_hdrincl</td>
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<td class="paramtype"></td> <td class="paramname"><span class="paramname"><em>src</em></span>, </td>
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<td class="paramtype"></td> <td class="paramname"><span class="paramname"><em>dest</em></span>, </td>
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<td class="paramtype"></td> <td class="paramname"><span class="paramname"><em><a class="el" href="structnetif.html">netif</a></em></span>&#160;)</td>
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<b>Value:</b><div class="fragment"><div class="line"> (IP_IS_V6(dest) ? \</div>
<div class="line"> ip6_output_if(p, <a class="code hl_define" href="group__ip6addr.html#ga06e75bcd198012b5ba39480c233608bd">ip_2_ip6</a>(src), LWIP_IP_HDRINCL, 0, 0, 0, <a class="code hl_struct" href="structnetif.html">netif</a>) : \</div>
<div class="line"> <a class="code hl_function" href="ip4_8c.html#ab220bc4ce4f48bdbba447358b3594917">ip4_output_if</a>(p, <a class="code hl_define" href="group__ip4addr.html#gad7268a496b7e3f872efecd859eba6f03">ip_2_ip4</a>(src), LWIP_IP_HDRINCL, 0, 0, 0, <a class="code hl_struct" href="structnetif.html">netif</a>))</div>
<div class="ttc" id="aip4_8c_html_ab220bc4ce4f48bdbba447358b3594917"><div class="ttname"><a href="ip4_8c.html#ab220bc4ce4f48bdbba447358b3594917">ip4_output_if</a></div><div class="ttdeci">err_t ip4_output_if(struct pbuf *p, const ip4_addr_t *src, const ip4_addr_t *dest, u8_t ttl, u8_t tos, u8_t proto, struct netif *netif)</div><div class="ttdef"><b>Definition</b> ip4.c:787</div></div>
<div class="ttc" id="astructnetif_html"><div class="ttname"><a href="structnetif.html">netif</a></div><div class="ttdef"><b>Definition</b> netif.h:260</div></div>
</div><!-- fragment --><p>Output IP packet that already includes an IP header. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a8bdf4b5f674375e76cdd968826d80e53">&#9670;&#160;</a></span>IP_PCB</h2>
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<td class="memname">#define IP_PCB</td>
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<b>Value:</b><div class="fragment"><div class="line"> <span class="comment">/* ip addresses in network byte order */</span> \</div>
<div class="line"> <a class="code hl_struct" href="structip__addr.html">ip_addr_t</a> local_ip; \</div>
<div class="line"> <a class="code hl_struct" href="structip__addr.html">ip_addr_t</a> remote_ip; \</div>
<div class="line"> <span class="comment">/* Bound netif index */</span> \</div>
<div class="line"> u8_t netif_idx; \</div>
<div class="line"> <span class="comment">/* Socket options */</span> \</div>
<div class="line"> u8_t so_options; \</div>
<div class="line"> <span class="comment">/* Type Of Service */</span> \</div>
<div class="line"> u8_t tos; \</div>
<div class="line"> <span class="comment">/* Time To Live */</span> \</div>
<div class="line"> u8_t ttl \</div>
<div class="line"> <span class="comment">/* link layer address resolution hint */</span> \</div>
<div class="line"> IP_PCB_NETIFHINT</div>
<div class="ttc" id="astructip__addr_html"><div class="ttname"><a href="structip__addr.html">ip_addr</a></div><div class="ttdef"><b>Definition</b> ip_addr.h:69</div></div>
</div><!-- fragment --><p>This is the common part of all PCB types. It needs to be at the beginning of a PCB type definition. It is located here so that changes to this common part are made in one location instead of having to change all PCB structs. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a441c63f00c4b0cb69fc34ca6b55307cc">&#9670;&#160;</a></span>ip_reset_option</h2>
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<td class="memname">#define ip_reset_option</td>
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<td class="paramtype"></td> <td class="paramname"><span class="paramname"><em>pcb</em></span>, </td>
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<td class="paramtype"></td> <td class="paramname"><span class="paramname"><em>opt</em></span>&#160;)</td>
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<b>Value:</b><div class="fragment"><div class="line">((pcb)-&gt;so_options = (u8_t)((pcb)-&gt;so_options &amp; ~(opt)))</div>
</div><!-- fragment --><p>Resets an IP pcb option (SOF_* flags) </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a13f48cf825c7f074dc05bea54e9d6a93">&#9670;&#160;</a></span>ip_set_option</h2>
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<td class="memname">#define ip_set_option</td>
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<td class="paramtype"></td> <td class="paramname"><span class="paramname"><em>pcb</em></span>, </td>
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<td class="paramtype"></td> <td class="paramname"><span class="paramname"><em>opt</em></span>&#160;)</td>
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<b>Value:</b><div class="fragment"><div class="line">((pcb)-&gt;so_options = (u8_t)((pcb)-&gt;so_options | (opt)))</div>
</div><!-- fragment --><p>Sets an IP pcb option (SOF_* flags) </p>
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<h2 class="memtitle"><span class="permalink"><a href="#a355679dba1c0d8ef07ce3abcd28e3063">&#9670;&#160;</a></span>LWIP_IP_CHECK_PBUF_REF_COUNT_FOR_TX</h2>
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<td class="memname">#define LWIP_IP_CHECK_PBUF_REF_COUNT_FOR_TX</td>
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<td class="paramtype"></td> <td class="paramname"><span class="paramname"><em>p</em></span></td><td>)</td>
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<b>Value:</b><div class="fragment"><div class="line">LWIP_ASSERT(<span class="stringliteral">&quot;p-&gt;ref == 1&quot;</span>, (p)-&gt;ref == 1)</div>
</div><!-- fragment --><p>pbufs passed to IP must have a ref-count of 1 as their payload pointer gets altered as the packet is passed down the stack </p>
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<h2 class="groupheader">Variable Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#ac944fb6564f181bc90bc7c2b8b00d94c">&#9670;&#160;</a></span>ip_data</h2>
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<td class="memname">struct <a class="el" href="structip__globals.html">ip_globals</a> ip_data</td>
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<span class="mlabels"><span class="mlabel">extern</span></span> </td>
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<p>Global data for both IPv4 and IPv6 </p>
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