NAME¶
pcap_offline_filter - check whether a filter matches a packet
SYNOPSIS¶
#include <pcap/pcap.h>
int pcap_offline_filter(struct bpf_program *fp,
const struct pcap_pkthdr *h, const u_char *pkt)
DESCRIPTION¶
pcap_offline_filter() checks whether a filter matches a packet.
fp
is a pointer to a
bpf_program struct, usually the result of a call to
pcap_compile().
h points to the
pcap_pkthdr structure for
the packet, and
pkt points to the data in the packet.
RETURN VALUE¶
pcap_offline_filter() returns the return value of the filter program.
This will be zero if the packet doesn't match the filter and non-zero if the
packet matches the filter.
SEE ALSO¶
pcap(3PCAP), pcap_compile(3PCAP)