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
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.
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
This page is part of the libpcap (packet capture library)
project. Information about the project can be found at
⟨http://www.tcpdump.org/⟩. If you have a bug report for this
manual page, see ⟨http://www.tcpdump.org/#patches⟩. This page
was obtained from the project's upstream Git repository
⟨https://github.com/the-tcpdump-group/libpcap.git⟩ on 2021-08-27.
(At that time, the date of the most recent commit that was found
in the repository was 2021-08-17.) If you discover any rendering
problems in this HTML version of the page, or you believe there
is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
15 April 20P1C9AP_DATALINK_VAL_TO_NAME(3PCAP)