pcap_set_datalink — Npcap API

Name

pcap_set_datalink - set the link-layer header type to be used by a capture device

Synopsis

#include <pcap/pcap.h>
int pcap_set_datalink(pcap_t *p, int dlt);

Description

pcap_set_datalink() is used to set the current link-layer header type of the pcap descriptor to the type specified by dlt.

Return value

pcap_set_datalink() returns 0 on success, PCAP_ERROR_NOT_ACTIVATED if called on a capture handle that has been created but not activated, or PCAP_ERROR on other errors. If PCAP_ERROR is returned, pcap_geterr(3PCAP) or pcap_perror(3PCAP) may be called with p as an argument to fetch or display the error text.