ipv6: introduce ip6_rt_put()

As suggested by Eric, we could introduce a helper function
for ipv6 too, to avoid checking if rt is NULL before
dst_release().

Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 3 deletions

diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index cb7e2ded6f08..09482f723064 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -663,8 +663,7 @@ ip6ip6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 
                 icmpv6_send(skb2, rel_type, rel_code, rel_info);
 
-                if (rt)
-                        dst_release(&rt->dst);
+                ip6_rt_put(rt);
 
                 kfree_skb(skb2);
         }
@@ -1208,7 +1207,7 @@ static void ip6_tnl_link_config(struct ip6_tnl *t)
                         if (dev->mtu < IPV6_MIN_MTU)
                                 dev->mtu = IPV6_MIN_MTU;
                 }
-                dst_release(&rt->dst);
+                ip6_rt_put(rt);
         }
 }