pcap_setfilter(3) - Linux man page
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().
Return Value
pcap_setfilter() 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_compile(3PCAP), pcap_geterr(3PCAP)