pcap_set_datalink.3pcap man page

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


#include <pcap/pcap.h>

int pcap_set_datalink(pcap_t *p, int dlt);


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 and -1 on failure. If -1 is returned, pcap_geterr() or pcap_perror() may be called with p as an argument to fetch or display the error text.

See Also

pcap(3PCAP), pcap_geterr(3PCAP), pcap_datalink_name_to_val(3PCAP)


3 January 2014