1 files changed, 10 insertions, 8 deletions

diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
index a77d16158eb..f31ce72dca6 100644
--- a/net/decnet/dn_route.c
+++ b/net/decnet/dn_route.c
@@ -112,7 +112,7 @@ static unsigned long dn_rt_deadline;
 static int dn_dst_gc(struct dst_ops *ops);
 static struct dst_entry *dn_dst_check(struct dst_entry *, __u32);
 static unsigned int dn_dst_default_advmss(const struct dst_entry *dst);
-static unsigned int dn_dst_default_mtu(const struct dst_entry *dst);
+static unsigned int dn_dst_mtu(const struct dst_entry *dst);
 static void dn_dst_destroy(struct dst_entry *);
 static struct dst_entry *dn_dst_negative_advice(struct dst_entry *);
 static void dn_dst_link_failure(struct sk_buff *);
@@ -135,7 +135,7 @@ static struct dst_ops dn_dst_ops = {
 	.gc =			dn_dst_gc,
 	.check =		dn_dst_check,
 	.default_advmss =	dn_dst_default_advmss,
-	.default_mtu =		dn_dst_default_mtu,
+	.mtu =			dn_dst_mtu,
 	.cow_metrics =		dst_cow_metrics_generic,
 	.destroy =		dn_dst_destroy,
 	.negative_advice =	dn_dst_negative_advice,
@@ -244,7 +244,7 @@ static int dn_dst_gc(struct dst_ops *ops)
  */
 static void dn_dst_update_pmtu(struct dst_entry *dst, u32 mtu)
 {
-	struct neighbour *n = dst_get_neighbour(dst);
+	struct neighbour *n = dst_get_neighbour_noref(dst);
 	u32 min_mtu = 230;
 	struct dn_dev *dn;
 
@@ -713,7 +713,7 @@ out:
 static int dn_to_neigh_output(struct sk_buff *skb)
 {
 	struct dst_entry *dst = skb_dst(skb);
-	struct neighbour *n = dst_get_neighbour(dst);
+	struct neighbour *n = dst_get_neighbour_noref(dst);
 
 	return n->output(n, skb);
 }
@@ -728,7 +728,7 @@ static int dn_output(struct sk_buff *skb)
 
 	int err = -EINVAL;
 
-	if ((neigh = dst_get_neighbour(dst)) == NULL)
+	if ((neigh = dst_get_neighbour_noref(dst)) == NULL)
 		goto error;
 
 	skb->dev = dev;
@@ -825,9 +825,11 @@ static unsigned int dn_dst_default_advmss(const struct dst_entry *dst)
 	return dn_mss_from_pmtu(dst->dev, dst_mtu(dst));
 }
 
-static unsigned int dn_dst_default_mtu(const struct dst_entry *dst)
+static unsigned int dn_dst_mtu(const struct dst_entry *dst)
 {
-	return dst->dev->mtu;
+	unsigned int mtu = dst_metric_raw(dst, RTAX_MTU);
+
+	return mtu ? : dst->dev->mtu;
 }
 
 static struct neighbour *dn_dst_neigh_lookup(const struct dst_entry *dst, const void *daddr)
@@ -850,7 +852,7 @@ static int dn_rt_set_next_hop(struct dn_route *rt, struct dn_fib_res *res)
 	}
 	rt->rt_type = res->type;
 
-	if (dev != NULL && dst_get_neighbour(&rt->dst) == NULL) {
+	if (dev != NULL && dst_get_neighbour_noref(&rt->dst) == NULL) {
 		n = __neigh_lookup_errno(&dn_neigh_table, &rt->rt_gateway, dev);
 		if (IS_ERR(n))
 			return PTR_ERR(n);