t4_mbox_waiter_t
t4_mbox_waiter_t entry;
void t4_mbox_waiter_add(struct adapter *, t4_mbox_waiter_t *);
void t4_mbox_waiter_remove(struct adapter *, t4_mbox_waiter_t *);
t4_mbox_waiter_add(struct adapter *sc, t4_mbox_waiter_t *ent)
t4_mbox_waiter_remove(struct adapter *sc, t4_mbox_waiter_t *ent)
t4_mbox_waiter_t *head = list_head(&sc->mbox_list);
list_create(&sc->mbox_list, sizeof (t4_mbox_waiter_t),
offsetof(t4_mbox_waiter_t, node));