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.\" Copyright (c) 1994, 1996, 1997
.\" The Regents of the University of California. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that: (1) source code distributions
.\" retain the above copyright notice and this paragraph in its entirety, (2)
.\" distributions including binary code include the above copyright notice and
.\" this paragraph in its entirety in the documentation or other materials
.\" provided with the distribution, and (3) all advertising materials mentioning
.\" features or use of this software display the following acknowledgement:
.\" ``This product includes software developed by the University of California,
.\" Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
.\" the University nor the names of its contributors may be used to endorse
.\" or promote products derived from this software without specific prior
.\" written permission.
.\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
.\"
.TH PCAP_DATALINK_VAL_TO_NAME 3PCAP "12 October 2016"
.SH NAME
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
.SH SYNOPSIS
.nf
.ft B
#include <pcap.h>
.ft
.LP
.ft B
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);
.ft
.fi
.SH DESCRIPTION
.B pcap_datalink_val_to_name()
translates a link-layer header type value to the corresponding
link-layer header type name, which is the
.B DLT_
name for the link-layer header type value with the
.B DLT_
removed.
.B NULL
is returned if the type value does not correspond to a known
.B DLT_
value.
.PP
.B pcap_datalink_val_to_description()
translates a link-layer header type value to a short description of that
link-layer header type.
.B NULL
is returned if the type value does not correspond to a known
.B DLT_
value.
.PP
.B pcap_datalink_val_to_description_or_dlt()
translates a link-layer header type value to a short description of that
link-layer header type just like pcap_datalink_val_to_description.
If the type value does not correspond to a known
.B DLT_
value, the string "DLT n" is returned, where n is the value of
the dlt argument.
.SH SEE ALSO
pcap(3PCAP)
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