PCAP_DATALINK_VAL_TO_DESCRIPTION(3)

🌸 pcap_datalink_val_to_name, pcap_datalink_val_to_description, pcap_datalink_val_to_description_or_dlt 🌸

okay bestie, welcome to the Library Functions Manual page for PCAP_DATAL...VAL_TO_NAME(3) — the header is doing the absolute most with that abbreviation, but the functions inside are literally the get-a-name-or-description-for-a-link-layer-header-type-value squad. let's go 💅

✨ 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. no cap, that's the whole vibe.
• 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. short and sweet, iconic behavior.
• 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. it's giving fallback queen 👑

🦋 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. yes bestie, that's the old-school manual-labor era 😭

🌈 SEE ALSO 🌈

pcap(3)

mwah 💋 — source vibe: Library Functions Manual; dated 4 May 2022; page banner: PCAP_DATAL...VAL_TO_NAME(3). periodt 🫶