NAME¶
pcap_setfilter - set the filter
SYNOPSIS¶
#include <pcap/pcap.h>
int pcap_setfilter(pcap_t *p, struct bpf_program *fp);
DESCRIPTION¶
pcap_setfilter() is used to specify a filter program. fp is a
pointer to a bpf_program struct, usually the result of a call to
pcap_compile(3PCAP).
RETURN VALUE¶
pcap_setfilter() returns 0 on success and PCAP_ERROR on
failure. 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.
