+static ldp_fd_entry_t *
+ldp_fd_entry_lock (u32 fd_index)
+{
+ ldp_fd_entry_t *fe;
+ clib_rwlock_reader_lock (&ldp->fd_table_lock);
+ if (pool_is_free_index (ldp->fd_pool, fd_index))
+ {
+ clib_rwlock_reader_unlock (&ldp->fd_table_lock);
+ return 0;
+ }
+
+ fe = pool_elt_at_index (ldp->fd_pool, fd_index);
+ clib_spinlock_lock (&fe->lock);
+ return fe;
+}
+
+static void
+ldp_fd_entry_unlock (ldp_fd_entry_t * fde)
+{
+ clib_spinlock_unlock (&fde->lock);
+ clib_rwlock_reader_unlock (&ldp->fd_table_lock);
+}
+