Merge tag 'platform-drivers-x86-v4.12-2' of git://git.infradead.org/linux-platform...

[karo-tx-linux.git] / net / ipv4 / route.c

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 655d9eebe43e16a59102edcd3ea4bc177c6b341d..6883b3d4ba8f69de2cb924612d60f5671a219a84 100644 (file)
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1385,8 +1385,12 @@ static void rt_add_uncached_list(struct rtable *rt)
 
 static void ipv4_dst_destroy(struct dst_entry *dst)
 {
+       struct dst_metrics *p = (struct dst_metrics *)DST_METRICS_PTR(dst);
        struct rtable *rt = (struct rtable *) dst;
 
+       if (p != &dst_default_metrics && atomic_dec_and_test(&p->refcnt))
+               kfree(p);
+
        if (!list_empty(&rt->rt_uncached)) {
                struct uncached_list *ul = rt->rt_uncached_list;
 
@@ -1438,7 +1442,11 @@ static void rt_set_nexthop(struct rtable *rt, __be32 daddr,
                        rt->rt_gateway = nh->nh_gw;
                        rt->rt_uses_gateway = 1;
                }
-               dst_init_metrics(&rt->dst, fi->fib_metrics, true);
+               dst_init_metrics(&rt->dst, fi->fib_metrics->metrics, true);
+               if (fi->fib_metrics != &dst_default_metrics) {
+                       rt->dst._metrics |= DST_METRICS_REFCOUNTED;
+                       atomic_inc(&fi->fib_metrics->refcnt);
+               }
 #ifdef CONFIG_IP_ROUTE_CLASSID
                rt->dst.tclassid = nh->nh_tclassid;
 #endif