+ /*
+ * If we're not caching, just tell the caller we
+ * were successful and don't touch the route. The
+ * caller hold the sole reference to the cache entry, and
+ * it will be released when the caller is done with it.
+ * If we drop it here, the callers have no way to resolve routes
+ * when we're not caching. Instead, just point *rp at rt, so
+ * the caller gets a single use out of the route
+ * Note that we do rt_free on this new route entry, so that
+ * once its refcount hits zero, we are still able to reap it
+ * (Thanks Alexey)
+ * Note also the rt_free uses call_rcu. We don't actually
+ * need rcu protection here, this is just our path to get
+ * on the route gc list.
+ */
+
+ if (rt->rt_type == RTN_UNICAST || rt->fl.iif == 0) {
+ int err = arp_bind_neighbour(&rt->u.dst);
+ if (err) {
+ if (net_ratelimit())
+ printk(KERN_WARNING
+ "Neighbour table failure & not caching routes.\n");
+ rt_drop(rt);
+ return err;
+ }
+ }
+
+ rt_free(rt);
+ goto skip_hashing;