pcap_setfilter(3PCAP) man page
Updated: 5 March 2022 • View in plain text • Return to Main Contents
pcap_setfilter - set the filter
#include <pcap/pcap.h> int pcap_setfilter(pcap_t *p, struct bpf_program *fp);
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(3PCAP).
pcap_setfilter() returns 0 on success,
PCAP_ERROR_NOT_ACTIVATEDif called on a capture handle that has been created but not activated, or
PCAP_ERRORon other errors. If
PCAP_ERRORis returned, pcap_geterr(3PCAP) or pcap_perror(3PCAP) may be called with p as an argument to fetch or display the error text.
This HTML man page was generated at 13:50:57 GMT, February 26, 2023 from a source man page in "The Tcpdump Group" git repositories using man2html and other tools.