pf_overload_entry
struct pf_overload_entry *pfoe;
struct pf_overload_entry *pfoe, *pfoe1;
SLIST_REMOVE(&queue, pfoe, pf_overload_entry, next);
SLIST_ENTRY(pf_overload_entry) next;
SLIST_HEAD(pf_overload_head, pf_overload_entry);