[NET]: Make helper to get dst entry and "use" it

There are many places that get the dst entry, increase the
__use counter and set the "lastuse" time stamp.

Make a helper for this.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 12 deletions

diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
index 97eee5e8fbb..66663e5d7ac 100644
--- a/net/decnet/dn_route.c
+++ b/net/decnet/dn_route.c
@@ -293,9 +293,7 @@ static int dn_insert_route(struct dn_route *rt, unsigned hash, struct dn_route *
                                            dn_rt_hash_table[hash].chain);
                         rcu_assign_pointer(dn_rt_hash_table[hash].chain, rth);
 
-                        rth->u.dst.__use++;
-                        dst_hold(&rth->u.dst);
-                        rth->u.dst.lastuse = now;
+                        dst_use(&rth->u.dst, now);
                         spin_unlock_bh(&dn_rt_hash_table[hash].lock);
 
                         dnrt_drop(rt);
@@ -308,9 +306,7 @@ static int dn_insert_route(struct dn_route *rt, unsigned hash, struct dn_route *
         rcu_assign_pointer(rt->u.dst.dn_next, dn_rt_hash_table[hash].chain);
         rcu_assign_pointer(dn_rt_hash_table[hash].chain, rt);
 
-        dst_hold(&rt->u.dst);
-        rt->u.dst.__use++;
-        rt->u.dst.lastuse = now;
+        dst_use(&rt->u.dst, now);
         spin_unlock_bh(&dn_rt_hash_table[hash].lock);
         *rp = rt;
         return 0;
@@ -1182,9 +1178,7 @@ static int __dn_route_output_key(struct dst_entry **pprt, const struct flowi *fl
                             (flp->mark == rt->fl.mark) &&
                             (rt->fl.iif == 0) &&
                             (rt->fl.oif == flp->oif)) {
-                                rt->u.dst.lastuse = jiffies;
-                                dst_hold(&rt->u.dst);
-                                rt->u.dst.__use++;
+                                dst_use(&rt->u.dst, jiffies);
                                 rcu_read_unlock_bh();
                                 *pprt = &rt->u.dst;
                                 return 0;
@@ -1456,9 +1450,7 @@ int dn_route_input(struct sk_buff *skb)
                     (rt->fl.oif == 0) &&
                     (rt->fl.mark == skb->mark) &&
                     (rt->fl.iif == cb->iif)) {
-                        rt->u.dst.lastuse = jiffies;
-                        dst_hold(&rt->u.dst);
-                        rt->u.dst.__use++;
+                        dst_use(&rt->u.dst, jiffies);
                         rcu_read_unlock();
                         skb->dst = (struct dst_entry *)rt;
                         return 0;