small radix_mpath patch

[Kip Macy]

Calling arpresolve on an rtentry looked up by rtalloc_mpath_fib won't
work because a gratuitous clone route is created without llinfo
attached. As far as I can tell, routes should only ever be cloned for
initial host route creation during a resolve to store arp information.


Index: sys/net/radix_mpath.c
===================================================================
--- sys/net/radix_mpath.c       (revision 184756)
+++ sys/net/radix_mpath.c       (working copy)
@@ -54,7 +54,7 @@
 /*
  * give some jitter to hash, to avoid synchronization between routers
  */
-static u_int32_t hashjitter;
+static uint32_t hashjitter;

 int
 rn_mpath_capable(struct radix_node_head *rnh)
@@ -267,7 +267,7 @@
         */
        if (ro->ro_rt && ro->ro_rt->rt_ifp && (ro->ro_rt->rt_flags & RTF_UP))
                return;                          /* XXX */
-       ro->ro_rt = rtalloc1_fib(&ro->ro_dst, 1, 0UL, fibnum);
+       ro->ro_rt = rtalloc1_fib(&ro->ro_dst, 1, RTF_CLONING, fibnum);

        /* if the route does not exist or it is not multipath, don't care */
        if (ro->ro_rt == NULL)
@@ -299,7 +299,7 @@
                return;
        }

-       rtfree(ro->ro_rt);
+       RTFREE_LOCKED(ro->ro_rt);
        ro->ro_rt = (struct rtentry *)rn;
        RT_LOCK(ro->ro_rt);
        RT_ADDREF(ro->ro_rt);