PCAP_DATALINK_VAL_TO_NAME(3)                  FreeBSD Library Functions Manual

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 1.9.1.  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(3)

                                  4 May 2022      PCAP_DATALINK_VAL_TO_NAME(3)