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<title>lwIP: Mainloop mode (&quot;NO_SYS&quot;)</title>
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<div id="projectname">lwIP<span id="projectnumber">&#160;2.1.3</span>
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<div id="projectbrief">Lightweight IP stack</div>
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<a href="#func-members">Functions</a> </div>
<div class="headertitle"><div class="title">Mainloop mode ("NO_SYS")<div class="ingroups"><a class="el" href="group__lwip.html">lwIP</a></div></div></div>
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<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="func-members" name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:ga0c1a18439524d2f4a5e51d25c0ca2ce9" id="r_ga0c1a18439524d2f4a5e51d25c0ca2ce9"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#ga0c1a18439524d2f4a5e51d25c0ca2ce9">lwip_init</a> (void)</td></tr>
<tr class="separator:ga0c1a18439524d2f4a5e51d25c0ca2ce9"><td class="memSeparator" colspan="2">&#160;</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="#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>
<tr class="separator:ga3c420dab0c6760df099a2d688fa42a26"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga5532f93d68c874fb99c681bff2165385" id="r_ga5532f93d68c874fb99c681bff2165385"><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="#ga5532f93d68c874fb99c681bff2165385">netif_input</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *p, struct <a class="el" href="structnetif.html">netif</a> *inp)</td></tr>
<tr class="separator:ga5532f93d68c874fb99c681bff2165385"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga83cffdf69ab60fd0eba9d17d363f9883" id="r_ga83cffdf69ab60fd0eba9d17d363f9883"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="#ga83cffdf69ab60fd0eba9d17d363f9883">sys_check_timeouts</a> (void)</td></tr>
<tr class="separator:ga83cffdf69ab60fd0eba9d17d363f9883"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga6a10c58b82c56d02c48b3cfa2c2494ff" id="r_ga6a10c58b82c56d02c48b3cfa2c2494ff"><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="#ga6a10c58b82c56d02c48b3cfa2c2494ff">ethernet_input</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *p, struct <a class="el" href="structnetif.html">netif</a> *<a class="el" href="structnetif.html">netif</a>)</td></tr>
<tr class="separator:ga6a10c58b82c56d02c48b3cfa2c2494ff"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<p>Use this mode if you do not run an OS on your system. #define NO_SYS to 1. Feed incoming packets to netif-&gt;input(pbuf, netif) function from mainloop, <em>not</em> <em>from</em> <em>interrupt</em> <em>context</em>. You can allocate a <a class="el" href="group__pbuf.html">Packet buffers (PBUF)</a> in interrupt context and put them into a queue which is processed from mainloop.<br />
Call <a class="el" href="#ga83cffdf69ab60fd0eba9d17d363f9883">sys_check_timeouts()</a> periodically in the mainloop.<br />
Porting: implement all functions in <a class="el" href="group__sys__time.html">Time</a>, <a class="el" href="group__sys__prot.html">Critical sections</a> and compiler_abstraction.<br />
You can only use <a class="el" href="group__callbackstyle__api.html">"raw" APIs</a> in this mode.<br />
Sample code:<br />
</p><div class="fragment"><div class="line"><span class="keywordtype">void</span></div>
<div class="line">eth_mac_irq()</div>
<div class="line">{</div>
<div class="line"> <span class="comment">/* Service MAC IRQ here */</span></div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* Allocate pbuf from pool (avoid using heap in interrupts) */</span></div>
<div class="line"> <span class="keyword">struct </span><a class="code hl_struct" href="structpbuf.html">pbuf</a>* p = <a class="code hl_function" href="group__pbuf.html#ga8bb9c5d54a06995b1c67ce695ead9969">pbuf_alloc</a>(<a class="code hl_enumvalue" href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfa21116654fbab6d5a4dfeb87a1bb8f0ba">PBUF_RAW</a>, eth_data_count, <a class="code hl_enumvalue" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbae969347127387b9b59a23ccd24b76d21">PBUF_POOL</a>);</div>
<div class="line"> </div>
<div class="line"> <span class="keywordflow">if</span>(p != NULL) {</div>
<div class="line"> <span class="comment">/* Copy ethernet frame into pbuf */</span></div>
<div class="line"> <a class="code hl_function" href="group__pbuf.html#gad1e31e370271335b197272af2724ca85">pbuf_take</a>(p, eth_data, eth_data_count);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* Put in a queue which is processed in main loop */</span></div>
<div class="line"> <span class="keywordflow">if</span>(!queue_try_put(&amp;queue, p)) {</div>
<div class="line"> <span class="comment">/* queue is full -&gt; packet loss */</span></div>
<div class="line"> <a class="code hl_function" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"><span class="keyword">static</span> <a class="code hl_typedef" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> </div>
<div class="line">netif_output(<span class="keyword">struct</span> <a class="code hl_struct" href="structnetif.html">netif</a> *<a class="code hl_struct" href="structnetif.html">netif</a>, <span class="keyword">struct</span> <a class="code hl_struct" href="structpbuf.html">pbuf</a> *p)</div>
<div class="line">{</div>
<div class="line"> LINK_STATS_INC(link.xmit);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* Update SNMP stats (only if you use SNMP) */</span></div>
<div class="line"> <a class="code hl_define" href="group__netif__mib2.html#ga05641438775014b7e13b9e55eba48bed">MIB2_STATS_NETIF_ADD</a>(<a class="code hl_struct" href="structnetif.html">netif</a>, ifoutoctets, p-&gt;<a class="code hl_variable" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>);</div>
<div class="line"> <span class="keywordtype">int</span> unicast = ((p-&gt;<a class="code hl_variable" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>[0] &amp; 0x01) == 0);</div>
<div class="line"> <span class="keywordflow">if</span> (unicast) {</div>
<div class="line"> <a class="code hl_define" href="group__netif__mib2.html#ga3c52caf566d37705c6547f2d025afd9f">MIB2_STATS_NETIF_INC</a>(<a class="code hl_struct" href="structnetif.html">netif</a>, ifoutucastpkts);</div>
<div class="line"> } <span class="keywordflow">else</span> {</div>
<div class="line"> <a class="code hl_define" href="group__netif__mib2.html#ga3c52caf566d37705c6547f2d025afd9f">MIB2_STATS_NETIF_INC</a>(<a class="code hl_struct" href="structnetif.html">netif</a>, ifoutnucastpkts);</div>
<div class="line"> }</div>
<div class="line"> </div>
<div class="line"> lock_interrupts();</div>
<div class="line"> <a class="code hl_function" href="group__pbuf.html#gac2f1f58fd36042e82af46f5015720899">pbuf_copy_partial</a>(p, mac_send_buffer, p-&gt;<a class="code hl_variable" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>, 0);</div>
<div class="line"> <span class="comment">/* Start MAC transmit here */</span></div>
<div class="line"> unlock_interrupts();</div>
<div class="line"> </div>
<div class="line"> <span class="keywordflow">return</span> <a class="code hl_enumvalue" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"><span class="keyword">static</span> <span class="keywordtype">void</span> </div>
<div class="line">netif_status_callback(<span class="keyword">struct</span> <a class="code hl_struct" href="structnetif.html">netif</a> *<a class="code hl_struct" href="structnetif.html">netif</a>)</div>
<div class="line">{</div>
<div class="line"> printf(<span class="stringliteral">&quot;netif status changed %s\n&quot;</span>, <a class="code hl_function" href="ip4__addr_8c.html#af01e406c5f44a325d779c4b4282a1744">ip4addr_ntoa</a>(netif_ip4_addr(<a class="code hl_struct" href="structnetif.html">netif</a>)));</div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"><span class="keyword">static</span> <a class="code hl_typedef" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> </div>
<div class="line">netif_init(<span class="keyword">struct</span> <a class="code hl_struct" href="structnetif.html">netif</a> *<a class="code hl_struct" href="structnetif.html">netif</a>)</div>
<div class="line">{</div>
<div class="line"> <a class="code hl_struct" href="structnetif.html">netif</a>-&gt;<a class="code hl_variable" href="structnetif.html#acaaac9b415a7be73eb8a287c8ed18a8d">linkoutput</a> = netif_output;</div>
<div class="line"> <a class="code hl_struct" href="structnetif.html">netif</a>-&gt;<a class="code hl_variable" href="structnetif.html#a8e1dcfe65db487feecd244355f39215e">output</a> = <a class="code hl_function" href="etharp_8c.html#a19258c75a3778b6ed0c82f63a419502d">etharp_output</a>;</div>
<div class="line"> <a class="code hl_struct" href="structnetif.html">netif</a>-&gt;<a class="code hl_variable" href="structnetif.html#ac38383379cff22c402156fec71c19617">output_ip6</a> = <a class="code hl_function" href="ethip6_8c.html#ab5326546d33174f91f1fb0cc6d398bfd">ethip6_output</a>;</div>
<div class="line"> <a class="code hl_struct" href="structnetif.html">netif</a>-&gt;<a class="code hl_variable" href="structnetif.html#aca7d56b4e0f822b0ced2885f222b8d48">mtu</a> = ETHERNET_MTU;</div>
<div class="line"> <a class="code hl_struct" href="structnetif.html">netif</a>-&gt;<a class="code hl_variable" href="structnetif.html#a1c171db6097bbb6f09f63549a66e00ea">flags</a> = <a class="code hl_define" href="group__netif__flags.html#gaef64fe15c82bc7b235366923e517104e">NETIF_FLAG_BROADCAST</a> | <a class="code hl_define" href="group__netif__flags.html#ga92448dc510bc8d700c09e5c971ef0676">NETIF_FLAG_ETHARP</a> | <a class="code hl_define" href="group__netif__flags.html#ga76ad9d0cf9f029df0ab2a998c64040dc">NETIF_FLAG_ETHERNET</a> | <a class="code hl_define" href="group__netif__flags.html#gac9493b923d733c73f6006d9714826558">NETIF_FLAG_IGMP</a> | <a class="code hl_define" href="group__netif__flags.html#gab14fbe1447d2fdbdf5abc87f51eb6508">NETIF_FLAG_MLD6</a>;</div>
<div class="line"> <a class="code hl_define" href="group__netif__mib2.html#ga5be1b8cba1d67bf6e7f8851ec91b10f0">MIB2_INIT_NETIF</a>(<a class="code hl_struct" href="structnetif.html">netif</a>, snmp_ifType_ethernet_csmacd, 100000000);</div>
<div class="line"> </div>
<div class="line"> <a class="code hl_define" href="group__lwip__opts__memcpy.html#ga8c6e3c1e4f74acb16376188dbf8909ec">SMEMCPY</a>(<a class="code hl_struct" href="structnetif.html">netif</a>-&gt;<a class="code hl_variable" href="structnetif.html#aee967965d999fc1a4c40a66709304e69">hwaddr</a>, your_mac_address_goes_here, ETH_HWADDR_LEN);</div>
<div class="line"> <a class="code hl_struct" href="structnetif.html">netif</a>-&gt;<a class="code hl_variable" href="structnetif.html#afe1181561cb16241f3cb5ed01e567d42">hwaddr_len</a> = ETH_HWADDR_LEN;</div>
<div class="line"> </div>
<div class="line"> <span class="keywordflow">return</span> <a class="code hl_enumvalue" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line">}</div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">void</span> </div>
<div class="line">main(<span class="keywordtype">void</span>)</div>
<div class="line">{</div>
<div class="line"> <span class="keyword">struct </span><a class="code hl_struct" href="structnetif.html">netif</a> <a class="code hl_struct" href="structnetif.html">netif</a>;</div>
<div class="line"> </div>
<div class="line"> <a class="code hl_function" href="#ga0c1a18439524d2f4a5e51d25c0ca2ce9">lwip_init</a>();</div>
<div class="line"> </div>
<div class="line"> <a class="code hl_function" href="group__netif.html#ga22055759a25f5d6cea7e7deab0a07434">netif_add</a>(&amp;<a class="code hl_struct" href="structnetif.html">netif</a>, <a class="code hl_define" href="group__ip4addr.html#gae920b6e81610a38cf9ada52118807eff">IP4_ADDR_ANY</a>, <a class="code hl_define" href="group__ip4addr.html#gae920b6e81610a38cf9ada52118807eff">IP4_ADDR_ANY</a>, <a class="code hl_define" href="group__ip4addr.html#gae920b6e81610a38cf9ada52118807eff">IP4_ADDR_ANY</a>, NULL, netif_init, <a class="code hl_function" href="#ga5532f93d68c874fb99c681bff2165385">netif_input</a>);</div>
<div class="line"> <a class="code hl_struct" href="structnetif.html">netif</a>.<a class="code hl_variable" href="structnetif.html#a32fca6ffd28bb9af3f891a378827a67e">name</a>[0] = <span class="charliteral">&#39;e&#39;</span>;</div>
<div class="line"> <a class="code hl_struct" href="structnetif.html">netif</a>.<a class="code hl_variable" href="structnetif.html#a32fca6ffd28bb9af3f891a378827a67e">name</a>[1] = <span class="charliteral">&#39;0&#39;</span>;</div>
<div class="line"> <a class="code hl_function" href="group__netif__ip6.html#gae864211a5eb052deb5da7bc7e3427fb9">netif_create_ip6_linklocal_address</a>(&amp;<a class="code hl_struct" href="structnetif.html">netif</a>, 1);</div>
<div class="line"> <a class="code hl_struct" href="structnetif.html">netif</a>.<a class="code hl_variable" href="structnetif.html#ad98bafb7733b40ef898e53d91fbfa20f">ip6_autoconfig_enabled</a> = 1;</div>
<div class="line"> <a class="code hl_function" href="group__netif.html#gadc8787b23ac0ee023979cbadf87813d4">netif_set_status_callback</a>(&amp;<a class="code hl_struct" href="structnetif.html">netif</a>, netif_status_callback);</div>
<div class="line"> <a class="code hl_function" href="group__netif.html#gac90f290edd005238d62aa94c4ac9dea3">netif_set_default</a>(&amp;<a class="code hl_struct" href="structnetif.html">netif</a>);</div>
<div class="line"> <a class="code hl_function" href="group__netif.html#gaf19693be401a265a52d2a56c65753121">netif_set_up</a>(&amp;<a class="code hl_struct" href="structnetif.html">netif</a>);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* Start DHCP and HTTPD */</span></div>
<div class="line"> <a class="code hl_function" href="group__dhcp4.html#ga0c50968d9811aa2aa67fadc0885d744f">dhcp_start</a>(&amp;<a class="code hl_struct" href="structnetif.html">netif</a> );</div>
<div class="line"> <a class="code hl_function" href="group__httpd.html#gac364305cee969a0be43c071722b136e6">httpd_init</a>();</div>
<div class="line"> </div>
<div class="line"> <span class="keywordflow">while</span>(1) {</div>
<div class="line"> <span class="comment">/* Check link state, e.g. via MDIO communication with PHY */</span></div>
<div class="line"> <span class="keywordflow">if</span>(link_state_changed()) {</div>
<div class="line"> <span class="keywordflow">if</span>(link_is_up()) {</div>
<div class="line"> <a class="code hl_function" href="group__netif.html#gae0d2975f189277990e9d5276fdd9e9ea">netif_set_link_up</a>(&amp;<a class="code hl_struct" href="structnetif.html">netif</a>);</div>
<div class="line"> } <span class="keywordflow">else</span> {</div>
<div class="line"> <a class="code hl_function" href="group__netif.html#ga34e37a1e8e358760dc1c43887922c7db">netif_set_link_down</a>(&amp;<a class="code hl_struct" href="structnetif.html">netif</a>);</div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* Check for received frames, feed them to lwIP */</span></div>
<div class="line"> lock_interrupts();</div>
<div class="line"> <span class="keyword">struct </span><a class="code hl_struct" href="structpbuf.html">pbuf</a>* p = queue_try_get(&amp;queue);</div>
<div class="line"> unlock_interrupts();</div>
<div class="line"> </div>
<div class="line"> <span class="keywordflow">if</span>(p != NULL) {</div>
<div class="line"> LINK_STATS_INC(link.recv);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* Update SNMP stats (only if you use SNMP) */</span></div>
<div class="line"> <a class="code hl_define" href="group__netif__mib2.html#ga05641438775014b7e13b9e55eba48bed">MIB2_STATS_NETIF_ADD</a>(<a class="code hl_struct" href="structnetif.html">netif</a>, ifinoctets, p-&gt;<a class="code hl_variable" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>);</div>
<div class="line"> <span class="keywordtype">int</span> unicast = ((p-&gt;<a class="code hl_variable" href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">payload</a>[0] &amp; 0x01) == 0);</div>
<div class="line"> <span class="keywordflow">if</span> (unicast) {</div>
<div class="line"> <a class="code hl_define" href="group__netif__mib2.html#ga3c52caf566d37705c6547f2d025afd9f">MIB2_STATS_NETIF_INC</a>(<a class="code hl_struct" href="structnetif.html">netif</a>, ifinucastpkts);</div>
<div class="line"> } <span class="keywordflow">else</span> {</div>
<div class="line"> <a class="code hl_define" href="group__netif__mib2.html#ga3c52caf566d37705c6547f2d025afd9f">MIB2_STATS_NETIF_INC</a>(<a class="code hl_struct" href="structnetif.html">netif</a>, ifinnucastpkts);</div>
<div class="line"> }</div>
<div class="line"> </div>
<div class="line"> <span class="keywordflow">if</span>(<a class="code hl_struct" href="structnetif.html">netif</a>.<a class="code hl_variable" href="structnetif.html#a8fe4f1b7b0d710216287da9615164a5c">input</a>(p, &amp;<a class="code hl_struct" href="structnetif.html">netif</a>) != <a class="code hl_enumvalue" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"> <a class="code hl_function" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"> }</div>
<div class="line"> }</div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* Cyclic lwIP timers check */</span></div>
<div class="line"> <a class="code hl_function" href="#ga83cffdf69ab60fd0eba9d17d363f9883">sys_check_timeouts</a>();</div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* your application goes here */</span></div>
<div class="line"> }</div>
<div class="line">}</div>
<div class="ttc" id="aetharp_8c_html_a19258c75a3778b6ed0c82f63a419502d"><div class="ttname"><a href="etharp_8c.html#a19258c75a3778b6ed0c82f63a419502d">etharp_output</a></div><div class="ttdeci">err_t etharp_output(struct netif *netif, struct pbuf *q, const ip4_addr_t *ipaddr)</div><div class="ttdef"><b>Definition</b> etharp.c:791</div></div>
<div class="ttc" id="aethip6_8c_html_ab5326546d33174f91f1fb0cc6d398bfd"><div class="ttname"><a href="ethip6_8c.html#ab5326546d33174f91f1fb0cc6d398bfd">ethip6_output</a></div><div class="ttdeci">err_t ethip6_output(struct netif *netif, struct pbuf *q, const ip6_addr_t *ip6addr)</div><div class="ttdef"><b>Definition</b> ethip6.c:79</div></div>
<div class="ttc" id="agroup__dhcp4_html_ga0c50968d9811aa2aa67fadc0885d744f"><div class="ttname"><a href="group__dhcp4.html#ga0c50968d9811aa2aa67fadc0885d744f">dhcp_start</a></div><div class="ttdeci">err_t dhcp_start(struct netif *netif)</div><div class="ttdef"><b>Definition</b> dhcp.c:742</div></div>
<div class="ttc" id="agroup__httpd_html_gac364305cee969a0be43c071722b136e6"><div class="ttname"><a href="group__httpd.html#gac364305cee969a0be43c071722b136e6">httpd_init</a></div><div class="ttdeci">void httpd_init(void)</div><div class="ttdef"><b>Definition</b> httpd.c:2675</div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_gaf02d9da80fd66b4f986d2c53d7231ddb"><div class="ttname"><a href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div><div class="ttdeci">s8_t err_t</div><div class="ttdef"><b>Definition</b> err.h:96</div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a></div><div class="ttdeci">@ ERR_OK</div><div class="ttdef"><b>Definition</b> err.h:55</div></div>
<div class="ttc" id="agroup__ip4addr_html_gae920b6e81610a38cf9ada52118807eff"><div class="ttname"><a href="group__ip4addr.html#gae920b6e81610a38cf9ada52118807eff">IP4_ADDR_ANY</a></div><div class="ttdeci">#define IP4_ADDR_ANY</div><div class="ttdef"><b>Definition</b> ip_addr.h:388</div></div>
<div class="ttc" id="agroup__lwip__nosys_html_ga0c1a18439524d2f4a5e51d25c0ca2ce9"><div class="ttname"><a href="#ga0c1a18439524d2f4a5e51d25c0ca2ce9">lwip_init</a></div><div class="ttdeci">void lwip_init(void)</div><div class="ttdef"><b>Definition</b> init.c:333</div></div>
<div class="ttc" id="agroup__lwip__nosys_html_ga5532f93d68c874fb99c681bff2165385"><div class="ttname"><a href="#ga5532f93d68c874fb99c681bff2165385">netif_input</a></div><div class="ttdeci">err_t netif_input(struct pbuf *p, struct netif *inp)</div><div class="ttdef"><b>Definition</b> netif.c:217</div></div>
<div class="ttc" id="agroup__lwip__nosys_html_ga83cffdf69ab60fd0eba9d17d363f9883"><div class="ttname"><a href="#ga83cffdf69ab60fd0eba9d17d363f9883">sys_check_timeouts</a></div><div class="ttdeci">void sys_check_timeouts(void)</div><div class="ttdef"><b>Definition</b> timeouts.c:352</div></div>
<div class="ttc" id="agroup__lwip__opts__memcpy_html_ga8c6e3c1e4f74acb16376188dbf8909ec"><div class="ttname"><a href="group__lwip__opts__memcpy.html#ga8c6e3c1e4f74acb16376188dbf8909ec">SMEMCPY</a></div><div class="ttdeci">#define SMEMCPY(dst, src, len)</div><div class="ttdef"><b>Definition</b> opt.h:145</div></div>
<div class="ttc" id="agroup__netif__flags_html_ga76ad9d0cf9f029df0ab2a998c64040dc"><div class="ttname"><a href="group__netif__flags.html#ga76ad9d0cf9f029df0ab2a998c64040dc">NETIF_FLAG_ETHERNET</a></div><div class="ttdeci">#define NETIF_FLAG_ETHERNET</div><div class="ttdef"><b>Definition</b> netif.h:101</div></div>
<div class="ttc" id="agroup__netif__flags_html_ga92448dc510bc8d700c09e5c971ef0676"><div class="ttname"><a href="group__netif__flags.html#ga92448dc510bc8d700c09e5c971ef0676">NETIF_FLAG_ETHARP</a></div><div class="ttdeci">#define NETIF_FLAG_ETHARP</div><div class="ttdef"><b>Definition</b> netif.h:97</div></div>
<div class="ttc" id="agroup__netif__flags_html_gab14fbe1447d2fdbdf5abc87f51eb6508"><div class="ttname"><a href="group__netif__flags.html#gab14fbe1447d2fdbdf5abc87f51eb6508">NETIF_FLAG_MLD6</a></div><div class="ttdeci">#define NETIF_FLAG_MLD6</div><div class="ttdef"><b>Definition</b> netif.h:107</div></div>
<div class="ttc" id="agroup__netif__flags_html_gac9493b923d733c73f6006d9714826558"><div class="ttname"><a href="group__netif__flags.html#gac9493b923d733c73f6006d9714826558">NETIF_FLAG_IGMP</a></div><div class="ttdeci">#define NETIF_FLAG_IGMP</div><div class="ttdef"><b>Definition</b> netif.h:104</div></div>
<div class="ttc" id="agroup__netif__flags_html_gaef64fe15c82bc7b235366923e517104e"><div class="ttname"><a href="group__netif__flags.html#gaef64fe15c82bc7b235366923e517104e">NETIF_FLAG_BROADCAST</a></div><div class="ttdeci">#define NETIF_FLAG_BROADCAST</div><div class="ttdef"><b>Definition</b> netif.h:87</div></div>
<div class="ttc" id="agroup__netif__ip6_html_gae864211a5eb052deb5da7bc7e3427fb9"><div class="ttname"><a href="group__netif__ip6.html#gae864211a5eb052deb5da7bc7e3427fb9">netif_create_ip6_linklocal_address</a></div><div class="ttdeci">void netif_create_ip6_linklocal_address(struct netif *netif, u8_t from_mac_48bit)</div><div class="ttdef"><b>Definition</b> netif.c:1515</div></div>
<div class="ttc" id="agroup__netif__mib2_html_ga05641438775014b7e13b9e55eba48bed"><div class="ttname"><a href="group__netif__mib2.html#ga05641438775014b7e13b9e55eba48bed">MIB2_STATS_NETIF_ADD</a></div><div class="ttdeci">#define MIB2_STATS_NETIF_ADD(n, x, val)</div><div class="ttdef"><b>Definition</b> snmp.h:110</div></div>
<div class="ttc" id="agroup__netif__mib2_html_ga3c52caf566d37705c6547f2d025afd9f"><div class="ttname"><a href="group__netif__mib2.html#ga3c52caf566d37705c6547f2d025afd9f">MIB2_STATS_NETIF_INC</a></div><div class="ttdeci">#define MIB2_STATS_NETIF_INC(n, x)</div><div class="ttdef"><b>Definition</b> snmp.h:105</div></div>
<div class="ttc" id="agroup__netif__mib2_html_ga5be1b8cba1d67bf6e7f8851ec91b10f0"><div class="ttname"><a href="group__netif__mib2.html#ga5be1b8cba1d67bf6e7f8851ec91b10f0">MIB2_INIT_NETIF</a></div><div class="ttdeci">#define MIB2_INIT_NETIF(netif, type, speed)</div><div class="ttdef"><b>Definition</b> snmp.h:119</div></div>
<div class="ttc" id="agroup__netif_html_ga22055759a25f5d6cea7e7deab0a07434"><div class="ttname"><a href="group__netif.html#ga22055759a25f5d6cea7e7deab0a07434">netif_add</a></div><div class="ttdeci">struct netif * netif_add(struct netif *netif, const ip4_addr_t *ipaddr, const ip4_addr_t *netmask, const ip4_addr_t *gw, void *state, netif_init_fn init, netif_input_fn input)</div><div class="ttdef"><b>Definition</b> netif.c:276</div></div>
<div class="ttc" id="agroup__netif_html_ga34e37a1e8e358760dc1c43887922c7db"><div class="ttname"><a href="group__netif.html#ga34e37a1e8e358760dc1c43887922c7db">netif_set_link_down</a></div><div class="ttdeci">void netif_set_link_down(struct netif *netif)</div><div class="ttdef"><b>Definition</b> netif.c:1029</div></div>
<div class="ttc" id="agroup__netif_html_gac90f290edd005238d62aa94c4ac9dea3"><div class="ttname"><a href="group__netif.html#gac90f290edd005238d62aa94c4ac9dea3">netif_set_default</a></div><div class="ttdeci">void netif_set_default(struct netif *netif)</div><div class="ttdef"><b>Definition</b> netif.c:825</div></div>
<div class="ttc" id="agroup__netif_html_gadc8787b23ac0ee023979cbadf87813d4"><div class="ttname"><a href="group__netif.html#gadc8787b23ac0ee023979cbadf87813d4">netif_set_status_callback</a></div><div class="ttdeci">void netif_set_status_callback(struct netif *netif, netif_status_callback_fn status_callback)</div><div class="ttdef"><b>Definition</b> netif.c:960</div></div>
<div class="ttc" id="agroup__netif_html_gae0d2975f189277990e9d5276fdd9e9ea"><div class="ttname"><a href="group__netif.html#gae0d2975f189277990e9d5276fdd9e9ea">netif_set_link_up</a></div><div class="ttdeci">void netif_set_link_up(struct netif *netif)</div><div class="ttdef"><b>Definition</b> netif.c:991</div></div>
<div class="ttc" id="agroup__netif_html_gaf19693be401a265a52d2a56c65753121"><div class="ttname"><a href="group__netif.html#gaf19693be401a265a52d2a56c65753121">netif_set_up</a></div><div class="ttdeci">void netif_set_up(struct netif *netif)</div><div class="ttdef"><b>Definition</b> netif.c:847</div></div>
<div class="ttc" id="agroup__pbuf_html_ga8bb9c5d54a06995b1c67ce695ead9969"><div class="ttname"><a href="group__pbuf.html#ga8bb9c5d54a06995b1c67ce695ead9969">pbuf_alloc</a></div><div class="ttdeci">struct pbuf * pbuf_alloc(pbuf_layer layer, u16_t length, pbuf_type type)</div><div class="ttdef"><b>Definition</b> pbuf.c:224</div></div>
<div class="ttc" id="agroup__pbuf_html_gab0dd696fb4b6bc65e548944584f1738b"><div class="ttname"><a href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a></div><div class="ttdeci">u8_t pbuf_free(struct pbuf *p)</div><div class="ttdef"><b>Definition</b> pbuf.c:725</div></div>
<div class="ttc" id="agroup__pbuf_html_gac2f1f58fd36042e82af46f5015720899"><div class="ttname"><a href="group__pbuf.html#gac2f1f58fd36042e82af46f5015720899">pbuf_copy_partial</a></div><div class="ttdeci">u16_t pbuf_copy_partial(const struct pbuf *buf, void *dataptr, u16_t len, u16_t offset)</div><div class="ttdef"><b>Definition</b> pbuf.c:1061</div></div>
<div class="ttc" id="agroup__pbuf_html_gad1e31e370271335b197272af2724ca85"><div class="ttname"><a href="group__pbuf.html#gad1e31e370271335b197272af2724ca85">pbuf_take</a></div><div class="ttdeci">err_t pbuf_take(struct pbuf *buf, const void *dataptr, u16_t len)</div><div class="ttdef"><b>Definition</b> pbuf.c:1230</div></div>
<div class="ttc" id="agroup__pbuf_html_ggab7e0e32fcc292c0d7107721766ed92fbae969347127387b9b59a23ccd24b76d21"><div class="ttname"><a href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbae969347127387b9b59a23ccd24b76d21">PBUF_POOL</a></div><div class="ttdeci">@ PBUF_POOL</div><div class="ttdef"><b>Definition</b> pbuf.h:167</div></div>
<div class="ttc" id="agroup__pbuf_html_ggaee1baa59bb2f85ba575b5a8619ac1ebfa21116654fbab6d5a4dfeb87a1bb8f0ba"><div class="ttname"><a href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfa21116654fbab6d5a4dfeb87a1bb8f0ba">PBUF_RAW</a></div><div class="ttdeci">@ PBUF_RAW</div><div class="ttdef"><b>Definition</b> pbuf.h:111</div></div>
<div class="ttc" id="aip4__addr_8c_html_af01e406c5f44a325d779c4b4282a1744"><div class="ttname"><a href="ip4__addr_8c.html#af01e406c5f44a325d779c4b4282a1744">ip4addr_ntoa</a></div><div class="ttdeci">char * ip4addr_ntoa(const ip4_addr_t *addr)</div><div class="ttdef"><b>Definition</b> ip4_addr.c:269</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 class="ttc" id="astructnetif_html_a1c171db6097bbb6f09f63549a66e00ea"><div class="ttname"><a href="structnetif.html#a1c171db6097bbb6f09f63549a66e00ea">netif::flags</a></div><div class="ttdeci">u8_t flags</div><div class="ttdef"><b>Definition</b> netif.h:345</div></div>
<div class="ttc" id="astructnetif_html_a32fca6ffd28bb9af3f891a378827a67e"><div class="ttname"><a href="structnetif.html#a32fca6ffd28bb9af3f891a378827a67e">netif::name</a></div><div class="ttdeci">char name[2]</div><div class="ttdef"><b>Definition</b> netif.h:347</div></div>
<div class="ttc" id="astructnetif_html_a8e1dcfe65db487feecd244355f39215e"><div class="ttname"><a href="structnetif.html#a8e1dcfe65db487feecd244355f39215e">netif::output</a></div><div class="ttdeci">netif_output_fn output</div><div class="ttdef"><b>Definition</b> netif.h:294</div></div>
<div class="ttc" id="astructnetif_html_a8fe4f1b7b0d710216287da9615164a5c"><div class="ttname"><a href="structnetif.html#a8fe4f1b7b0d710216287da9615164a5c">netif::input</a></div><div class="ttdeci">netif_input_fn input</div><div class="ttdef"><b>Definition</b> netif.h:288</div></div>
<div class="ttc" id="astructnetif_html_ac38383379cff22c402156fec71c19617"><div class="ttname"><a href="structnetif.html#ac38383379cff22c402156fec71c19617">netif::output_ip6</a></div><div class="ttdeci">netif_output_ip6_fn output_ip6</div><div class="ttdef"><b>Definition</b> netif.h:305</div></div>
<div class="ttc" id="astructnetif_html_aca7d56b4e0f822b0ced2885f222b8d48"><div class="ttname"><a href="structnetif.html#aca7d56b4e0f822b0ced2885f222b8d48">netif::mtu</a></div><div class="ttdeci">u16_t mtu</div><div class="ttdef"><b>Definition</b> netif.h:335</div></div>
<div class="ttc" id="astructnetif_html_acaaac9b415a7be73eb8a287c8ed18a8d"><div class="ttname"><a href="structnetif.html#acaaac9b415a7be73eb8a287c8ed18a8d">netif::linkoutput</a></div><div class="ttdeci">netif_linkoutput_fn linkoutput</div><div class="ttdef"><b>Definition</b> netif.h:299</div></div>
<div class="ttc" id="astructnetif_html_ad98bafb7733b40ef898e53d91fbfa20f"><div class="ttname"><a href="structnetif.html#ad98bafb7733b40ef898e53d91fbfa20f">netif::ip6_autoconfig_enabled</a></div><div class="ttdeci">u8_t ip6_autoconfig_enabled</div><div class="ttdef"><b>Definition</b> netif.h:353</div></div>
<div class="ttc" id="astructnetif_html_aee967965d999fc1a4c40a66709304e69"><div class="ttname"><a href="structnetif.html#aee967965d999fc1a4c40a66709304e69">netif::hwaddr</a></div><div class="ttdeci">u8_t hwaddr[6U]</div><div class="ttdef"><b>Definition</b> netif.h:341</div></div>
<div class="ttc" id="astructnetif_html_afe1181561cb16241f3cb5ed01e567d42"><div class="ttname"><a href="structnetif.html#afe1181561cb16241f3cb5ed01e567d42">netif::hwaddr_len</a></div><div class="ttdeci">u8_t hwaddr_len</div><div class="ttdef"><b>Definition</b> netif.h:343</div></div>
<div class="ttc" id="astructpbuf_html"><div class="ttname"><a href="structpbuf.html">pbuf</a></div><div class="ttdef"><b>Definition</b> pbuf.h:186</div></div>
<div class="ttc" id="astructpbuf_html_a5259e7ec29bab9c0999b64f2e86b411f"><div class="ttname"><a href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">pbuf::tot_len</a></div><div class="ttdeci">u16_t tot_len</div><div class="ttdef"><b>Definition</b> pbuf.h:200</div></div>
<div class="ttc" id="astructpbuf_html_a8d32dc3e964369d4eec638fc37fbc460"><div class="ttname"><a href="structpbuf.html#a8d32dc3e964369d4eec638fc37fbc460">pbuf::payload</a></div><div class="ttdeci">void * payload</div><div class="ttdef"><b>Definition</b> pbuf.h:191</div></div>
</div><!-- fragment --> <h2 class="groupheader">Function Documentation</h2>
<a id="ga6a10c58b82c56d02c48b3cfa2c2494ff" name="ga6a10c58b82c56d02c48b3cfa2c2494ff"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ga6a10c58b82c56d02c48b3cfa2c2494ff">&#9670;&#160;</a></span>ethernet_input()</h2>
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<td class="memname"><a class="el" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> ethernet_input </td>
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<td class="paramtype">struct <a class="el" href="structpbuf.html">pbuf</a> *</td> <td class="paramname"><span class="paramname"><em>p</em></span>, </td>
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<td class="paramtype">struct <a class="el" href="structnetif.html">netif</a> *</td> <td class="paramname"><span class="paramname"><em>netif</em></span>&#160;)</td>
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<p>Process received ethernet frames. Using this function instead of directly calling ip_input and passing ARP frames through etharp in ethernetif_input, the ARP cache is protected from concurrent access.<br />
Don't call directly, pass to <a class="el" href="group__netif.html#ga22055759a25f5d6cea7e7deab0a07434">netif_add()</a> and call netif-&gt;input().</p>
<dl class="params"><dt>Parameters</dt><dd>
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<tr><td class="paramname">p</td><td>the received packet, p-&gt;payload pointing to the ethernet header </td></tr>
<tr><td class="paramname">netif</td><td>the network interface on which the packet was received</td></tr>
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<dl class="section see"><dt>See also</dt><dd><a class="el" href="group__lwip__opts__hooks.html#ga6cc92f5101dd7a0420e18e1f2101abf4">LWIP_HOOK_UNKNOWN_ETH_PROTOCOL</a> </dd>
<dd>
<a class="el" href="group__lwip__opts__arp.html#ga70ce0ecf56cf5fab000134e66d863f90">ETHARP_SUPPORT_VLAN</a> </dd>
<dd>
<a class="el" href="group__lwip__opts__hooks.html#ga2f020543772368f8f4355f50f24c86a9">LWIP_HOOK_VLAN_CHECK</a> </dd></dl>
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<h2 class="memtitle"><span class="permalink"><a href="#ga3c420dab0c6760df099a2d688fa42a26">&#9670;&#160;</a></span>ip_input()</h2>
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<td class="memname"><a class="el" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> ip_input </td>
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<td class="paramtype">struct <a class="el" href="structpbuf.html">pbuf</a> *</td> <td class="paramname"><span class="paramname"><em>p</em></span>, </td>
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<td class="paramtype">struct <a class="el" href="structnetif.html">netif</a> *</td> <td class="paramname"><span class="paramname"><em>inp</em></span>&#160;)</td>
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<p>If both IP versions are enabled, this function can dispatch packets to the correct one. Don't call directly, pass to <a class="el" href="group__netif.html#ga22055759a25f5d6cea7e7deab0a07434">netif_add()</a> and call netif-&gt;input(). </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga0c1a18439524d2f4a5e51d25c0ca2ce9">&#9670;&#160;</a></span>lwip_init()</h2>
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<td class="memname">void lwip_init </td>
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<p>Initialize all modules. Use this in NO_SYS mode. Use <a class="el" href="group__lwip__os.html#ga1f3a88b8df6ba3b9ed1c00e0a305e3db">tcpip_init()</a> otherwise. </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga5532f93d68c874fb99c681bff2165385">&#9670;&#160;</a></span>netif_input()</h2>
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<td class="memname"><a class="el" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> netif_input </td>
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<td class="paramtype">struct <a class="el" href="structpbuf.html">pbuf</a> *</td> <td class="paramname"><span class="paramname"><em>p</em></span>, </td>
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<p>Forwards a received packet for input processing with <a class="el" href="#ga6a10c58b82c56d02c48b3cfa2c2494ff">ethernet_input()</a> or <a class="el" href="#ga3c420dab0c6760df099a2d688fa42a26">ip_input()</a> depending on netif flags. Don't call directly, pass to <a class="el" href="group__netif.html#ga22055759a25f5d6cea7e7deab0a07434">netif_add()</a> and call netif-&gt;input(). Only works if the netif driver correctly sets NETIF_FLAG_ETHARP and/or NETIF_FLAG_ETHERNET flag! </p>
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<h2 class="memtitle"><span class="permalink"><a href="#ga83cffdf69ab60fd0eba9d17d363f9883">&#9670;&#160;</a></span>sys_check_timeouts()</h2>
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<td class="memname">void sys_check_timeouts </td>
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<p>Handle timeouts for NO_SYS==1 (i.e. without using tcpip_thread/sys_timeouts_mbox_fetch(). Uses <a class="el" href="group__sys__time.html#ga11316ac1e77418c6fa4ab8869e3fa199">sys_now()</a> to call timeout handler functions when timeouts expire.</p>
<p>Must be called periodically from your main loop. </p>
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