pcap_datalink_val_to_name(3) - NetBSD Manual Pages

PCAP_DATALINK_VAL_TO_NAME(3)                      PCAP_DATALINK_VAL_TO_NAME(3)




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)