bsd/netinet6/nd6.c

2993 			struct rtentry *gwrt;
3036 			if ((gwrt = rt->rt_gwroute) == NULL) {
3044 			 * Take gwrt's lock while holding route's lock;
3045 			 * this is okay since gwrt never points back
3048 			RT_LOCK_SPIN(gwrt);
3049 			if (!(gwrt->rt_flags & RTF_UP)) {
3051 				RT_UNLOCK(gwrt);
3053 				rtfree(gwrt);
3056 				gwrt = rtalloc1_scoped_locked(
3067 				    gwrt == NULL || gwrt == rt ||
3069 					if (gwrt == rt) {
3070 						RT_REMREF_LOCKED(gwrt);
3071 						gwrt = NULL;
3074 					if (gwrt != NULL)
3075 						rtfree_locked(gwrt);
3079 				VERIFY(gwrt != NULL);
3081 				 * Set gateway route; callee adds ref to gwrt;
3082 				 * gwrt has an extra ref from rtalloc1() for
3085 				rt_set_gwroute(rt, rt_key(rt), gwrt);
3090 				rt = gwrt;
3092 				RT_ADDREF_LOCKED(gwrt);
3093 				RT_UNLOCK(gwrt);
3097 				rt = gwrt;
3099 			VERIFY(rt == gwrt);
3105 			 * clone (hint) holds a reference to it.  rt == gwrt.
3123 			/* rt == gwrt; if it is now down, give up */