Man page of PCAP_DATALINK_VAL_TO_NAME

Section: Misc. Reference Manual Pages (3PCAP)
Updated: 15 April 2019
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This man page documents libpcap version 1.10.1.

Your system may have a different version installed, possibly with some local modifications. To achieve the best results, please make sure this version of this man page suits your needs. If necessary, try to look for a different version on this web site or in the man pages available in your installation.
 

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  

SYNOPSIS

#include <pcap.h>

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);
 

DESCRIPTION

pcap_datalink_val_to_name() translates a link-layer header type value to the corresponding link-layer header type name, which is the DLT_ name for the link-layer header type value with the DLT_ removed. NULL is returned if the type value does not correspond to a known DLT_ value.

pcap_datalink_val_to_description() translates a link-layer header type value to a short description of that link-layer header type. NULL is returned if the type value does not correspond to a known DLT_ value.

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 DLT_ value, the string "DLT n" is returned, where n is the value of the dlt argument.  

BACKWARD COMPATIBILITY

The pcap_datalink_val_to_description_or_dlt() function first became available in libpcap release 1.10.0. In previous releases, pcap_datalink_val_to_description() would have to be called and, if it returned NULL, a default string would have to be constructed.  

SEE ALSO

pcap(3PCAP)


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