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<p class="level0"><a name="NAME"></a><h2 class="nroffsh">NAME</h2>
<p class="level0">pcap_datalink_val_to_name, pcap_datalink_val_to_description, pcap_datalink_val_to_description_or_dlt - get a name or description for a link-layer header type value <a name="SYNOPSIS"></a><h2 class="nroffsh">SYNOPSIS</h2>
<p class="level0"><pre class="level0">
&#35;include &lt;pcap.h&gt;
const char *pcap_datalink_val_to_name(int dlt);
const char *pcap_datalink_val_to_description(int dlt);
const char *pcap_datalink_val_to_description_or_dlt(int dlt);
</pre>

<p class="level0"><a name="DESCRIPTION"></a><h2 class="nroffsh">DESCRIPTION</h2>
<p class="level0"><span Class="bold">pcap_datalink_val_to_name</span>() translates a link-layer header type value to the corresponding link-layer header type name, which is the <span Class="bold">DLT_</span> name for the link-layer header type value with the <span Class="bold">DLT_</span> removed. <span Class="bold">NULL</span> is returned if the type value does not correspond to a known <span Class="bold">DLT_</span> value. 
<p class="level0"><span Class="bold">pcap_datalink_val_to_description</span>() translates a link-layer header type value to a short description of that link-layer header type. <span Class="bold">NULL</span> is returned if the type value does not correspond to a known <span Class="bold">DLT_</span> value. 
<p class="level0"><span Class="bold">pcap_datalink_val_to_description_or_dlt</span>() translates a link-layer header type value to a short description of that link-layer header type just like <span Class="bold">pcap_datalink_val_to_description</span>(). If the type value does not correspond to a known <span Class="bold">DLT_</span> value, the string &quot;DLT n&quot; is returned, where n is the value of the dlt argument. <a name="BACKWARD"></a><h2 class="nroffsh">BACKWARD COMPATIBILITY</h2>
<p class="level0">The <span Class="bold">pcap_datalink_val_to_description_or_dlt</span>() function first became available in libpcap release 1.10.0.  In previous releases, <span Class="bold">pcap_datalink_val_to_description</span>() would have to be called and, if it returned <span Class="bold">NULL</span>, a default string would have to be constructed. <a name="SEE"></a><h2 class="nroffsh">SEE ALSO</h2>
<p class="level0"><a Class="bold" href="./pcap.html">pcap</a>(3PCAP) <p class="roffit">
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