[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>

diff --git a/include/net/dst.h b/include/net/dst.h
index e9ff4a4..2f65e89 100644 (file)
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -143,6 +143,13 @@ static inline void dst_hold(struct dst_entry * dst)
        atomic_inc(&dst->__refcnt);
 }
 
+static inline void dst_use(struct dst_entry *dst, unsigned long time)
+{
+       dst_hold(dst);
+       dst->__use++;
+       dst->lastuse = time;
+}
+
 static inline
 struct dst_entry * dst_clone(struct dst_entry * dst)
 {

diff --git a/net/decnet/dn_route.c b/net/decnet/dn_route.c
index 97eee5e..66663e5 100644 (file)
--- 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;

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index c95b270..4565183 100644 (file)
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -851,9 +851,7 @@ restart:
                         */
                        rcu_assign_pointer(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(rt_hash_lock_addr(hash));
 
                        rt_drop(rt);
@@ -1930,9 +1928,7 @@ int ip_route_input(struct sk_buff *skb, __be32 daddr, __be32 saddr,
                    rth->fl.oif == 0 &&
                    rth->fl.mark == skb->mark &&
                    rth->fl.fl4_tos == tos) {
-                       rth->u.dst.lastuse = jiffies;
-                       dst_hold(&rth->u.dst);
-                       rth->u.dst.__use++;
+                       dst_use(&rth->u.dst, jiffies);
                        RT_CACHE_STAT_INC(in_hit);
                        rcu_read_unlock();
                        skb->dst = (struct dst_entry*)rth;
@@ -2326,9 +2322,7 @@ int __ip_route_output_key(struct rtable **rp, const struct flowi *flp)
                    rth->fl.mark == flp->mark &&
                    !((rth->fl.fl4_tos ^ flp->fl4_tos) &
                            (IPTOS_RT_MASK | RTO_ONLINK))) {
-                       rth->u.dst.lastuse = jiffies;
-                       dst_hold(&rth->u.dst);
-                       rth->u.dst.__use++;
+                       dst_use(&rth->u.dst, jiffies);
                        RT_CACHE_STAT_INC(out_hit);
                        rcu_read_unlock_bh();
                        *rp = rth;

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 973a97a..6ecb5e6 100644 (file)
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -544,12 +544,8 @@ restart:
        rt = rt6_device_match(rt, fl->oif, flags);
        BACKTRACK(&fl->fl6_src);
 out:
-       dst_hold(&rt->u.dst);
+       dst_use(&rt->u.dst, jiffies);
        read_unlock_bh(&table->tb6_lock);
-
-       rt->u.dst.lastuse = jiffies;
-       rt->u.dst.__use++;
-
        return rt;
 
 }