pcap_set_datalink(3PCAP) man page

pcap_set_datalink(3PCAP) man page

Updated: 5 March 2022 • View in plain text • Return to Main Contents

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.

SEE ALSO

pcap(3PCAP), pcap_datalink(3PCAP), pcap_list_datalinks(3PCAP), pcap_datalink_name_to_val(3PCAP)

COLOPHON

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