bpf_filter
&& bpf_filter(active_filter.bf_insns, frame, len, len) == 0) {
extern u_int bpf_filter(struct bpf_insn *, u_char *, u_int, u_int);
extern u_int bpf_filter();
if (!bpf_filter(fr->fr_data, mc, fin->fin_plen, 0))
if (bpf_filter(ps->ps_bpf.bf_insns, buffer,
slen = bpf_filter(d->bd_filter, marg, pktlen, buflen);
extern uint_t bpf_filter(struct bpf_insn *, uchar_t *, uint_t, uint_t);