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冯佳 e7e10a8328 LwIP 2.2.1在STM32F407VET6平台 移植
2026-01-29 17:26:04 +08:00

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<div id="projectname">lwIP
&#160;<span id="projectnumber">2.2.1</span>
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<div id="projectbrief">Lightweight IP stack</div>
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<a href="#define-members">Macros</a> &#124;
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<div class="title">autoip.c File Reference</div> </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="mem_8h.html">lwip/mem.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="netif_8h.html">lwip/netif.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="autoip_8h.html">lwip/autoip.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="acd_8h.html">lwip/acd.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="lwip_2etharp_8h.html">lwip/etharp.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="prot_2autoip_8h.html">lwip/prot/autoip.h</a>&quot;</code><br />
<code>#include &lt;string.h&gt;</code><br />
</div><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a>
Macros</h2></td></tr>
<tr class="memitem:acec75069f6e6ecbe200c5691e56ecd43"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="autoip_8c.html#acec75069f6e6ecbe200c5691e56ecd43">LWIP_AUTOIP_CREATE_SEED_ADDR</a>(<a class="el" href="structnetif.html">netif</a>)</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:ga2122c0b2518b371559fef5ec1d2aed90"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__autoip.html#ga2122c0b2518b371559fef5ec1d2aed90">autoip_set_struct</a> (struct <a class="el" href="structnetif.html">netif</a> *<a class="el" href="structnetif.html">netif</a>, struct <a class="el" href="structautoip.html">autoip</a> *<a class="el" href="structautoip.html">autoip</a>)</td></tr>
<tr class="separator:ga2122c0b2518b371559fef5ec1d2aed90"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:gac0c98035795500ede464aa4af2515f30"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__autoip.html#gac0c98035795500ede464aa4af2515f30">autoip_remove_struct</a> (struct <a class="el" href="structnetif.html">netif</a> *<a class="el" href="structnetif.html">netif</a>)</td></tr>
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<tr class="memitem:ga1461f5826ebefc050e0d63013818d1e8"><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__autoip.html#ga1461f5826ebefc050e0d63013818d1e8">autoip_start</a> (struct <a class="el" href="structnetif.html">netif</a> *<a class="el" href="structnetif.html">netif</a>)</td></tr>
<tr class="separator:ga1461f5826ebefc050e0d63013818d1e8"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:af2a36aee96cbdf8f4a8f1e69c91ff425"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="autoip_8c.html#af2a36aee96cbdf8f4a8f1e69c91ff425">autoip_network_changed_link_up</a> (struct <a class="el" href="structnetif.html">netif</a> *<a class="el" href="structnetif.html">netif</a>)</td></tr>
<tr class="separator:af2a36aee96cbdf8f4a8f1e69c91ff425"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:af93544c49f2c24b95a3981351d023056"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="autoip_8c.html#af93544c49f2c24b95a3981351d023056">autoip_network_changed_link_down</a> (struct <a class="el" href="structnetif.html">netif</a> *<a class="el" href="structnetif.html">netif</a>)</td></tr>
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<tr class="memitem:ga58a4dce658dd1263e84eb982f62587d4"><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__autoip.html#ga58a4dce658dd1263e84eb982f62587d4">autoip_stop</a> (struct <a class="el" href="structnetif.html">netif</a> *<a class="el" href="structnetif.html">netif</a>)</td></tr>
<tr class="separator:ga58a4dce658dd1263e84eb982f62587d4"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6de97b7dcd98f9039d5c1ad11c257d62"><td class="memItemLeft" align="right" valign="top">u8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="autoip_8c.html#a6de97b7dcd98f9039d5c1ad11c257d62">autoip_supplied_address</a> (struct <a class="el" href="structnetif.html">netif</a> *<a class="el" href="structnetif.html">netif</a>)</td></tr>
<tr class="separator:a6de97b7dcd98f9039d5c1ad11c257d62"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>AutoIP Automatic LinkLocal IP Configuration</p>
<p>This is a AutoIP implementation for the lwIP TCP/IP stack. It aims to conform with RFC 3927. It uses IPv4 address conflict detection to evaluate the chosen address. The ACD module aims to be conform to RFC 5227. RFC 5227 is extracted out of RFC 3927 so the acd module fits nicely in autoip. </p>
</div><h2 class="groupheader">Macro Definition Documentation</h2>
<a id="acec75069f6e6ecbe200c5691e56ecd43"></a>
<h2 class="memtitle"><span class="permalink"><a href="#acec75069f6e6ecbe200c5691e56ecd43">&#9670;&nbsp;</a></span>LWIP_AUTOIP_CREATE_SEED_ADDR</h2>
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<td class="memname">#define LWIP_AUTOIP_CREATE_SEED_ADDR</td>
<td>(</td>
<td class="paramtype">&#160;</td>
<td class="paramname"><a class="el" href="structnetif.html">netif</a></td><td>)</td>
<td></td>
</tr>
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<b>Value:</b><div class="fragment"><div class="line"> <a class="code" href="def_8c.html#a14f94347a5b9b9e3602705b75b7ae524">lwip_htonl</a>(AUTOIP_RANGE_START + ((u32_t)(((u8_t)(<a class="code" href="structnetif.html">netif</a>-&gt;<a class="code" href="structnetif.html#aee967965d999fc1a4c40a66709304e69">hwaddr</a>[4])) | \</div>
<div class="line"> ((u32_t)((u8_t)(<a class="code" href="structnetif.html">netif</a>-&gt;<a class="code" href="structnetif.html#aee967965d999fc1a4c40a66709304e69">hwaddr</a>[5]))) &lt;&lt; 8)))</div>
</div><!-- fragment --><p>Macro that generates the initial IP address to be tried by AUTOIP. If you want to override this, define it to something else in lwipopts.h. </p>
</div>
</div>
<h2 class="groupheader">Function Documentation</h2>
<a id="af93544c49f2c24b95a3981351d023056"></a>
<h2 class="memtitle"><span class="permalink"><a href="#af93544c49f2c24b95a3981351d023056">&#9670;&nbsp;</a></span>autoip_network_changed_link_down()</h2>
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<td class="memname">void autoip_network_changed_link_down </td>
<td>(</td>
<td class="paramtype">struct <a class="el" href="structnetif.html">netif</a> *&#160;</td>
<td class="paramname"><em>netif</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Handle a possible change in the network configuration: link down</p>
<p>If there is an AutoIP address configured and AutoIP is in cooperation with DHCP, then stop the autoip module. When the link goes up, we do not want the autoip module to start again. DHCP will initiate autoip when needed. </p>
</div>
</div>
<a id="af2a36aee96cbdf8f4a8f1e69c91ff425"></a>
<h2 class="memtitle"><span class="permalink"><a href="#af2a36aee96cbdf8f4a8f1e69c91ff425">&#9670;&nbsp;</a></span>autoip_network_changed_link_up()</h2>
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<td class="memname">void autoip_network_changed_link_up </td>
<td>(</td>
<td class="paramtype">struct <a class="el" href="structnetif.html">netif</a> *&#160;</td>
<td class="paramname"><em>netif</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Handle a possible change in the network configuration: link up</p>
<p>If there is an AutoIP address configured and AutoIP is not in cooperation with DHCP, start probing for previous address. </p>
</div>
</div>
<a id="a6de97b7dcd98f9039d5c1ad11c257d62"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a6de97b7dcd98f9039d5c1ad11c257d62">&#9670;&nbsp;</a></span>autoip_supplied_address()</h2>
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<td class="memname">u8_t autoip_supplied_address </td>
<td>(</td>
<td class="paramtype">struct <a class="el" href="structnetif.html">netif</a> *&#160;</td>
<td class="paramname"><em>netif</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>check if AutoIP supplied netif-&gt;<a class="el" href="structip__addr.html">ip_addr</a></p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">netif</td><td>the netif to check </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>1 if AutoIP supplied netif-&gt;<a class="el" href="structip__addr.html">ip_addr</a> (state BOUND), 0 otherwise </dd></dl>
</div>
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<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:350</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:269</div></div>
<div class="ttc" id="adef_8c_html_a14f94347a5b9b9e3602705b75b7ae524"><div class="ttname"><a href="def_8c.html#a14f94347a5b9b9e3602705b75b7ae524">lwip_htonl</a></div><div class="ttdeci">u32_t lwip_htonl(u32_t n)</div><div class="ttdef"><b>Definition:</b> def.c:90</div></div>
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