PCAP_SET_DATALINK(3PCAP)

💅 pcap_set_datalink — the glow-up your capture device deserves

okay bestie, this is a 3PCAP moment, and literally the whole point is switching up which link-layer header type your capture device is rocking. no cap, it's giving "main character changes her whole vibe" energy ✨

🦋 SYNOPSIS 🦋

#include <pcap/pcap.h>

int pcap_set_datalink(pcap_t *p, int dlt);

🌸 DESCRIPTION 🌸

so pcap_set_datalink() is the icon that sets the current link-layer header type of the pcap descriptor over to whatever you dropped in the dlt cutie. that's it. that's the whole slay. 🎀

✨ RETURN VALUE ✨

here's the vibe check on what comes back:

• 0 — success, she ate, no notes 💖
• PCAP_ERROR_NOT_ACTIVATED — you called it on a capture handle that's been created but not activated yet, bestie 😭 activate her first
• PCAP_ERROR — any other oopsie

and if you do get PCAP_ERROR, don't just spiral — you can call pcap_geterr(3PCAP) or pcap_perror(3PCAP) with p as the argument to fetch or display the error text. iykyk 🫶

🔥 SEE ALSO 🔥

• pcap(3PCAP)
• pcap_datalink_name_to_val(3PCAP)

mwah 💋 that's the teardown, bestie — libpcap said 5 March 2022 and honestly? iconic date behavior. go set some datalinks 👑🌈