pf_osfp_match
IPPROTO_TCP || !pf_osfp_match(pf_osfp_fingerprint(pd, m,
(pd->proto != IPPROTO_TCP || !pf_osfp_match(
else if (r->os_fingerprint != PF_OSFP_ANY && !pf_osfp_match(
int pf_osfp_match(struct pf_osfp_enlist *, pf_osfp_t);