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<div class="title">tcpip_priv.h File Reference</div>  </div>
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<div class="textblock"><code>#include &quot;<a class="el" href="../../dc/dba/opt_8h_source.html">net/opt.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="../../d9/db5/tcpip_8h_source.html">net/tcpip.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="../../d9/d87/sys_8h_source.html">net/sys.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="../../d2/df2/timeouts_8h_source.html">net/timeouts.h</a>&quot;</code><br />
</div><div class="textblock"><div class="dynheader">
Include dependency graph for tcpip_priv.h:</div>
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<p><a href="../../d6/d89/tcpip__priv_8h_source.html">Go to the source code of this file.</a></p>
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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="../../d9/d85/structtcpip__api__call__data.html">tcpip_api_call_data</a></td></tr>
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">struct &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/de8/structtcpip__msg.html">tcpip_msg</a></td></tr>
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Macros</h2></td></tr>
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Typedefs</h2></td></tr>
<tr class="memitem:aa7ecde8c8d8012fe5c498f7ee58f9458"><td class="memItemLeft" align="right" valign="top">typedef <a class="el" href="../../d2/de7/group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a>(*&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d6/d89/tcpip__priv_8h.html#aa7ecde8c8d8012fe5c498f7ee58f9458">tcpip_api_call_fn</a>) (struct <a class="el" href="../../d9/d85/structtcpip__api__call__data.html">tcpip_api_call_data</a> *call)</td></tr>
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Enumerations</h2></td></tr>
<tr class="memitem:a1e0cb5032a61055e3f4a3426ed548937"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d6/d89/tcpip__priv_8h.html#a1e0cb5032a61055e3f4a3426ed548937">tcpip_msg_type</a> { <br />
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Functions</h2></td></tr>
<tr class="memitem:a3d42b0c46607f91aedcc7745ed466b08"><td class="memItemLeft" align="right" valign="top"><a class="el" href="../../d2/de7/group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d6/d89/tcpip__priv_8h.html#a3d42b0c46607f91aedcc7745ed466b08">tcpip_api_call</a> (<a class="el" href="../../d6/d89/tcpip__priv_8h.html#aa7ecde8c8d8012fe5c498f7ee58f9458">tcpip_api_call_fn</a> fn, struct <a class="el" href="../../d9/d85/structtcpip__api__call__data.html">tcpip_api_call_data</a> *call)</td></tr>
<tr class="separator:a3d42b0c46607f91aedcc7745ed466b08"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a12bdf37eddcd72c4178e3ea7d370395d"><td class="memItemLeft" align="right" valign="top"><a class="el" href="../../d2/de7/group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="../../d6/d89/tcpip__priv_8h.html#a12bdf37eddcd72c4178e3ea7d370395d">tcpip_send_msg_wait_sem</a> (<a class="el" href="../../d9/db5/tcpip_8h.html#a35203296bb838f3b493839ffc6e7285d">tcpip_callback_fn</a> fn, void *apimsg, <a class="el" href="../../d2/d28/sem_8h.html#a900e36da93bb688c29fc8148f2f44e04">sys_sem_t</a> *sem)</td></tr>
<tr class="separator:a12bdf37eddcd72c4178e3ea7d370395d"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>TCPIP API internal implementations (do not use in application code) </p>

<p class="definition">Definition in file <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html">tcpip_priv.h</a>.</p>
</div><h2 class="groupheader">Macro Definition Documentation</h2>
<a id="a4b2322aa0c1906f84f16acf359f06a92"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a4b2322aa0c1906f84f16acf359f06a92">&#9670;&nbsp;</a></span>API_EXPR_DEREF</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">#define API_EXPR_DEREF</td>
          <td>(</td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">expr</td><td>)</td>
          <td>&#160;&#160;&#160;(*(expr))</td>
        </tr>
      </table>
</div><div class="memdoc">

<p class="definition">Definition at line <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html#l00090">90</a> of file <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html">tcpip_priv.h</a>.</p>

</div>
</div>
<a id="a1f3c3ae0938b5510978cbd31560a5797"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a1f3c3ae0938b5510978cbd31560a5797">&#9670;&nbsp;</a></span>API_EXPR_REF</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">#define API_EXPR_REF</td>
          <td>(</td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">expr</td><td>)</td>
          <td>&#160;&#160;&#160;expr</td>
        </tr>
      </table>
</div><div class="memdoc">

<p class="definition">Definition at line <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html#l00088">88</a> of file <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html">tcpip_priv.h</a>.</p>

</div>
</div>
<a id="a91e803b3c3f0ab89b20d7a85e3e92624"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a91e803b3c3f0ab89b20d7a85e3e92624">&#9670;&nbsp;</a></span>API_EXPR_REF_SEM</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">#define API_EXPR_REF_SEM</td>
          <td>(</td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">expr</td><td>)</td>
          <td>&#160;&#160;&#160;<a class="el" href="../../d6/d89/tcpip__priv_8h.html#a1f3c3ae0938b5510978cbd31560a5797">API_EXPR_REF</a>(expr)</td>
        </tr>
      </table>
</div><div class="memdoc">

<p class="definition">Definition at line <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html#l00089">89</a> of file <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html">tcpip_priv.h</a>.</p>

</div>
</div>
<a id="ad299ce8f259fb9f1f6c5c5a812f1bc58"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ad299ce8f259fb9f1f6c5c5a812f1bc58">&#9670;&nbsp;</a></span>API_MSG_M_DEF</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">#define API_MSG_M_DEF</td>
          <td>(</td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">m</td><td>)</td>
          <td>&#160;&#160;&#160;*m</td>
        </tr>
      </table>
</div><div class="memdoc">

<p class="definition">Definition at line <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html#l00091">91</a> of file <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html">tcpip_priv.h</a>.</p>

</div>
</div>
<a id="a3a9d654eb42f26b409d1386d162f1e31"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a3a9d654eb42f26b409d1386d162f1e31">&#9670;&nbsp;</a></span>API_MSG_M_DEF_C</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">#define API_MSG_M_DEF_C</td>
          <td>(</td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">t, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">m&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td>&#160;&#160;&#160;<a class="el" href="../../d6/d92/cdefs_8h.html#a2c212835823e3c54a8ab6d95c652660e">const</a> t * m</td>
        </tr>
      </table>
</div><div class="memdoc">

<p class="definition">Definition at line <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html#l00092">92</a> of file <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html">tcpip_priv.h</a>.</p>

</div>
</div>
<a id="a8ff9b936b16d91844c0e32424e97f493"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a8ff9b936b16d91844c0e32424e97f493">&#9670;&nbsp;</a></span>API_VAR_ALLOC</h2>

<div class="memitem">
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      <table class="memname">
        <tr>
          <td class="memname">#define API_VAR_ALLOC</td>
          <td>(</td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">type, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">pool, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">&#160;</td>
          <td class="paramname"><a class="el" href="../../d1/de8/pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">errorval&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p class="definition">Definition at line <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html#l00084">84</a> of file <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html">tcpip_priv.h</a>.</p>

</div>
</div>
<a id="a0b826b1ea2ee54ebb94ab354578a1ffe"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a0b826b1ea2ee54ebb94ab354578a1ffe">&#9670;&nbsp;</a></span>API_VAR_ALLOC_POOL</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">#define API_VAR_ALLOC_POOL</td>
          <td>(</td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">type, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">pool, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">&#160;</td>
          <td class="paramname"><a class="el" href="../../d1/de8/pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">errorval&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p class="definition">Definition at line <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html#l00085">85</a> of file <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html">tcpip_priv.h</a>.</p>

</div>
</div>
<a id="ab5d4a4fa91c4c144bedabf593a68b4dd"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ab5d4a4fa91c4c144bedabf593a68b4dd">&#9670;&nbsp;</a></span>API_VAR_DECLARE</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">#define API_VAR_DECLARE</td>
          <td>(</td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">type, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">&#160;</td>
          <td class="paramname"><a class="el" href="../../d1/de8/pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td>&#160;&#160;&#160;type <a class="el" href="../../d1/de8/pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a></td>
        </tr>
      </table>
</div><div class="memdoc">

<p class="definition">Definition at line <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html#l00083">83</a> of file <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html">tcpip_priv.h</a>.</p>

</div>
</div>
<a id="a30caebb5334f52d49ac938a507094094"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a30caebb5334f52d49ac938a507094094">&#9670;&nbsp;</a></span>API_VAR_FREE</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">#define API_VAR_FREE</td>
          <td>(</td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">pool, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">&#160;</td>
          <td class="paramname"><a class="el" href="../../d1/de8/pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p class="definition">Definition at line <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html#l00086">86</a> of file <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html">tcpip_priv.h</a>.</p>

</div>
</div>
<a id="a803c2dd81f7e69515115b78759be0d76"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a803c2dd81f7e69515115b78759be0d76">&#9670;&nbsp;</a></span>API_VAR_FREE_POOL</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">#define API_VAR_FREE_POOL</td>
          <td>(</td>
          <td class="paramtype">&#160;</td>
          <td class="paramname">pool, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">&#160;</td>
          <td class="paramname"><a class="el" href="../../d1/de8/pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p class="definition">Definition at line <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html#l00087">87</a> of file <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html">tcpip_priv.h</a>.</p>

</div>
</div>
<a id="a3518256af0d1a422755a899b13c2b563"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a3518256af0d1a422755a899b13c2b563">&#9670;&nbsp;</a></span>API_VAR_REF</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">#define API_VAR_REF</td>
          <td>(</td>
          <td class="paramtype">&#160;</td>
          <td class="paramname"><a class="el" href="../../d1/de8/pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a></td><td>)</td>
          <td>&#160;&#160;&#160;<a class="el" href="../../d1/de8/pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a></td>
        </tr>
      </table>
</div><div class="memdoc">

<p class="definition">Definition at line <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html#l00082">82</a> of file <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html">tcpip_priv.h</a>.</p>

</div>
</div>
<h2 class="groupheader">Typedef Documentation</h2>
<a id="aa7ecde8c8d8012fe5c498f7ee58f9458"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aa7ecde8c8d8012fe5c498f7ee58f9458">&#9670;&nbsp;</a></span>tcpip_api_call_fn</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">typedef <a class="el" href="../../d2/de7/group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a>(* tcpip_api_call_fn) (struct <a class="el" href="../../d9/d85/structtcpip__api__call__data.html">tcpip_api_call_data</a> *call)</td>
        </tr>
      </table>
</div><div class="memdoc">

<p class="definition">Definition at line <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html#l00108">108</a> of file <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html">tcpip_priv.h</a>.</p>

</div>
</div>
<h2 class="groupheader">Enumeration Type Documentation</h2>
<a id="a1e0cb5032a61055e3f4a3426ed548937"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a1e0cb5032a61055e3f4a3426ed548937">&#9670;&nbsp;</a></span>tcpip_msg_type</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">enum <a class="el" href="../../d6/d89/tcpip__priv_8h.html#a1e0cb5032a61055e3f4a3426ed548937">tcpip_msg_type</a></td>
        </tr>
      </table>
</div><div class="memdoc">
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="a1e0cb5032a61055e3f4a3426ed548937a8665d0f2f1498c366e90d67a1e4c7f80"></a>TCPIP_MSG_API&#160;</td><td class="fielddoc"></td></tr>
<tr><td class="fieldname"><a id="a1e0cb5032a61055e3f4a3426ed548937ae68ceceeb8f3bfda0dfdb824dfd0aa8a"></a>TCPIP_MSG_API_CALL&#160;</td><td class="fielddoc"></td></tr>
<tr><td class="fieldname"><a id="a1e0cb5032a61055e3f4a3426ed548937a64972ba60577a99b44f088e0b5150c8a"></a>TCPIP_MSG_INPKT&#160;</td><td class="fielddoc"></td></tr>
<tr><td class="fieldname"><a id="a1e0cb5032a61055e3f4a3426ed548937a3915e837fa47d5b65cc17d47a0790662"></a>TCPIP_MSG_CALLBACK&#160;</td><td class="fielddoc"></td></tr>
<tr><td class="fieldname"><a id="a1e0cb5032a61055e3f4a3426ed548937a17160cdc581db556a47a57cd4efb3b78"></a>TCPIP_MSG_CALLBACK_STATIC&#160;</td><td class="fielddoc"></td></tr>
</table>

<p class="definition">Definition at line <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html#l00111">111</a> of file <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html">tcpip_priv.h</a>.</p>

</div>
</div>
<h2 class="groupheader">Function Documentation</h2>
<a id="a3d42b0c46607f91aedcc7745ed466b08"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a3d42b0c46607f91aedcc7745ed466b08">&#9670;&nbsp;</a></span>tcpip_api_call()</h2>

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        <tr>
          <td class="memname"><a class="el" href="../../d2/de7/group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> tcpip_api_call </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="../../d6/d89/tcpip__priv_8h.html#aa7ecde8c8d8012fe5c498f7ee58f9458">tcpip_api_call_fn</a>&#160;</td>
          <td class="paramname"><em>fn</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">struct <a class="el" href="../../d9/d85/structtcpip__api__call__data.html">tcpip_api_call_data</a> *&#160;</td>
          <td class="paramname"><em>call</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">
<p>Synchronously calls function in TCPIP thread and waits for its completion. It is recommended to use LWIP_TCPIP_CORE_LOCKING (preferred) or LWIP_NETCONN_SEM_PER_THREAD. If not, a semaphore is created and destroyed on every call which is usually an expensive/slow operation. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">fn</td><td>Function to call </td></tr>
    <tr><td class="paramname">call</td><td>Call parameters </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Return value from tcpip_api_call_fn </dd></dl>

<p class="definition">Definition at line <a class="el" href="../../d2/d55/tcpip_8c_source.html#l00356">356</a> of file <a class="el" href="../../d2/d55/tcpip_8c_source.html">tcpip.c</a>.</p>

<p class="reference">References <a class="el" href="../../d6/d40/err_8h_source.html#l00063">ERR_OK</a>, <a class="el" href="../../d9/db5/tcpip_8h_source.html#l00060">LOCK_TCPIP_CORE</a>, <a class="el" href="../../db/d16/debug_8h_source.html#l00116">LWIP_ASSERT</a>, <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html#l00128">tcpip_msg::msg</a>, <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html#l00102">tcpip_api_call_data::sem</a>, <a class="el" href="../../d9/d87/sys_8h_source.html#l00271">sys_mbox_valid_val</a>, <a class="el" href="../../d9/d56/sys__arch_8c_source.html#l00052">sys_sem_new()</a>, <a class="el" href="../../d2/d55/tcpip_8c_source.html#l00048">TCPIP_MSG_VAR_DECLARE</a>, and <a class="el" href="../../d9/db5/tcpip_8h_source.html#l00061">UNLOCK_TCPIP_CORE</a>.</p>
<div class="dynheader">
Here is the call graph for this function:</div>
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<h2 class="memtitle"><span class="permalink"><a href="#a12bdf37eddcd72c4178e3ea7d370395d">&#9670;&nbsp;</a></span>tcpip_send_msg_wait_sem()</h2>

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          <td class="memname"><a class="el" href="../../d2/de7/group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> tcpip_send_msg_wait_sem </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="../../d9/db5/tcpip_8h.html#a35203296bb838f3b493839ffc6e7285d">tcpip_callback_fn</a>&#160;</td>
          <td class="paramname"><em>fn</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>apimsg</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="../../d2/d28/sem_8h.html#a900e36da93bb688c29fc8148f2f44e04">sys_sem_t</a> *&#160;</td>
          <td class="paramname"><em>sem</em>&#160;</td>
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        <tr>
          <td></td>
          <td>)</td>
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<p>Sends a message to TCPIP thread to call a function. Caller thread blocks on on a provided semaphore, which ist NOT automatically signalled by TCPIP thread, this has to be done by the user. It is recommended to use LWIP_TCPIP_CORE_LOCKING since this is the way with least runtime overhead.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">fn</td><td>function to be called from TCPIP thread </td></tr>
    <tr><td class="paramname">apimsg</td><td>argument to API function </td></tr>
    <tr><td class="paramname">sem</td><td>semaphore to wait on </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>ERR_OK if the function was called, another err_t if not </dd></dl>

<p class="definition">Definition at line <a class="el" href="../../d2/d55/tcpip_8c_source.html#l00322">322</a> of file <a class="el" href="../../d2/d55/tcpip_8c_source.html">tcpip.c</a>.</p>

<p class="reference">References <a class="el" href="../../d6/d40/err_8h_source.html#l00063">ERR_OK</a>, <a class="el" href="../../d9/db5/tcpip_8h_source.html#l00060">LOCK_TCPIP_CORE</a>, <a class="el" href="../../db/d16/debug_8h_source.html#l00116">LWIP_ASSERT</a>, <a class="el" href="../../d2/d2d/arch_8h_source.html#l00315">LWIP_UNUSED_ARG</a>, <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html#l00128">tcpip_msg::msg</a>, <a class="el" href="../../d6/d89/tcpip__priv_8h_source.html#l00133">tcpip_msg::sem</a>, <a class="el" href="../../d9/d87/sys_8h_source.html#l00271">sys_mbox_valid_val</a>, <a class="el" href="../../d9/d56/sys__arch_8c_source.html#l00131">sys_sem_valid()</a>, <a class="el" href="../../d2/d55/tcpip_8c_source.html#l00048">TCPIP_MSG_VAR_DECLARE</a>, and <a class="el" href="../../d9/db5/tcpip_8h_source.html#l00061">UNLOCK_TCPIP_CORE</a>.</p>
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