Copyright (c) 1994, 1996, 1997
The Regents of the University of California. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that: (1) source code distributions
retain the above copyright notice and this paragraph in its entirety, (2)
distributions including binary code include the above copyright notice and
this paragraph in its entirety in the documentation or other materials
provided with the distribution, and (3) all advertising materials mentioning
features or use of this software display the following acknowledgement:
``This product includes software developed by the University of California,
Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
the University nor the names of its contributors may be used to endorse
or promote products derived from this software without specific prior
written permission.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

pcap_offline_filter - check whether a filter matches a packet

#include <pcap/pcap.h>

int pcap_offline_filter(const struct bpf_program *fp,
const struct pcap_pkthdr *h, const u_char *pkt)

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 (3PCAP). h points to the pcap_pkthdr structure for the packet, and pkt points to the data in the packet. 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. pcap (3PCAP)