PCAP_SETFILTER
Section: Misc. Reference Manual Pages (3PCAP)
Updated: 7 April 2014
Page Index
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)