pf_state_ref
pf_state_ref(st);
pd->pd_st = pf_state_ref(st);
pf_state_ref(st);
pf_state_ref(st);
pf_state_ref(st);
pf_state_ref(st);
si->si_st = pf_state_ref(st);
st = pf_state_ref(cur);
pf_state_ref(st); /* get a ref for the list */
st = pf_state_ref(st);
st = pf_state_ref(st);
st = pf_state_ref(st);
st = pf_state_ref(st);
st = pf_state_ref(st);
st = pf_state_ref(st);
st = pf_state_ref(st);
st = pf_state_ref(st);
st = pf_state_ref(st);
st = pf_state_ref(st);
struct pf_state *pf_state_ref(struct pf_state *);