pcap_offline_filter(3PCAP) man page

Updated: 7 April 2014 • View in plain textReturn to Main Contents

This man page documents libpcap version 1.10.4 (see also: git master branch, 1.10.2, 1.10.1, 1.10.0, 1.9.1, 1.8.1, 1.7.4, 1.6.2, 1.5.3).

Your system may have a different version installed, possibly with some local modifications. To achieve the best results, please make sure this version of this man page suits your needs. If necessary, try to look for a different version on this web site or in the man pages available in your installation.


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.




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