-.\" $OpenBSD: bpf_mtap.9,v 1.13 2018/02/01 12:21:24 dlg Exp $
+.\" $OpenBSD: bpf_mtap.9,v 1.14 2018/02/02 10:52:44 jmc Exp $
.\"
.\" Copyright (c) 2016 David Gwynne <dlg@openbsd.org>
.\"
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
-.Dd $Mdocdate: February 1 2018 $
+.Dd $Mdocdate: February 2 2018 $
.Dt BPF_MTAP 9
.Os
.Sh NAME
.Fn bpfsattach
returns a reference to the BPF interface it allocates.
.Pp
-.Fn bpf_filter ,
+.Fn bpf_filter
and
.Fn bpf_mfilter
return -1 (cast to an unsigned integer) if the filter program is
.Fn bpf_mtap_hdr ,
.Fn bpf_mtap_af ,
.Fn bpf_mtap_ether ,
-.Fn bpf_tap_hdr ,
+and
+.Fn bpf_tap_hdr
return 1 if the packet or buffer matched a filter that indicates it
should be dropped, otherwise 0.
.Sh SEE ALSO