PCAP_DATALINK_VAL_TO_NAME - Online Linux Manual PageSection : 3PCAP
Updated : 15 April 2019

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NAMEpcap_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

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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);

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DESCRIPTIONpcap_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.

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BACKWARD COMPATIBILITYThe 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.

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SEE ALSOpcap(3PCAP) 0

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