checkreplaywindow
switch (checkreplaywindow(tdb, tdb->tdb_rpl, btsx, &esn, 0)) {
switch (checkreplaywindow(tdb, tdb->tdb_rpl, btsx, &esn, 1)) {
switch (checkreplaywindow(tdb, tdb->tdb_rpl, btsx, &esn, 0)) {
switch (checkreplaywindow(tdb, tdb->tdb_rpl, btsx, &esn, 1)) {
int checkreplaywindow(struct tdb *, u_int64_t, u_int32_t, u_int32_t *, int);