pf_match_tag
int pf_match_tag(struct mbuf *, struct pf_rule *, int *);
else if (r->match_tag && !pf_match_tag(m, r, &tag))
else if (r->match_tag && !pf_match_tag(m, r, &tag))
else if (r->match_tag && !pf_match_tag(m, r, &tag))