Subject: [PATCH v3 net-next 06/13] ipv6: Create cleanup helper for fib6_nh

From: David Ahern <[email-masked]>
Date: Wed, 27 Mar 2019 20:53:51 -0700

From: David Ahern <[email-masked]>

Move the fib6_nh cleanup code to a new helper, fib6_nh_release.

Signed-off-by: David Ahern <[email-masked]>
---
 include/net/ip6_fib.h | 1 +
 net/ipv6/ip6_fib.c    | 5 +----
 net/ipv6/route.c      | 8 ++++++++
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h
index ce1f81345c8e..2d2a468b3d6d 100644
--- a/include/net/ip6_fib.h
+++ b/include/net/ip6_fib.h
@@ -447,6 +447,7 @@ static inline struct net_device *fib6_info_nh_dev(const struct fib6_info *f6i)
 int fib6_nh_init(struct net *net, struct fib6_nh *fib6_nh,
 		 struct fib6_config *cfg, gfp_t gfp_flags,
 		 struct netlink_ext_ack *extack);
+void fib6_nh_release(struct fib6_nh *fib6_nh);
 
 static inline
 struct lwtunnel_state *fib6_info_nh_lwt(const struct fib6_info *f6i)
diff --git a/net/ipv6/ip6_fib.c b/net/ipv6/ip6_fib.c
index 6613d8dbb0e5..db886085369b 100644
--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -199,10 +199,7 @@ void fib6_info_destroy_rcu(struct rcu_head *head)
 		free_percpu(f6i->rt6i_pcpu);
 	}
 
-	lwtstate_put(f6i->fib6_nh.nh_lwtstate);
-
-	if (f6i->fib6_nh.nh_dev)
-		dev_put(f6i->fib6_nh.nh_dev);
+	fib6_nh_release(&f6i->fib6_nh);
 
 	ip_fib_metrics_put(f6i->fib6_metrics);
 
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 8c5a998b28a1..5f453c79dd00 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -3025,6 +3025,14 @@ int fib6_nh_init(struct net *net, struct fib6_nh *fib6_nh,
 	return err;
 }
 
+void fib6_nh_release(struct fib6_nh *fib6_nh)
+{
+	lwtstate_put(fib6_nh->nh_lwtstate);
+
+	if (fib6_nh->nh_dev)
+		dev_put(fib6_nh->nh_dev);
+}
+
 static struct fib6_info *ip6_route_info_create(struct fib6_config *cfg,
 					      gfp_t gfp_flags,
 					      struct netlink_ext_ack *extack)
-- 
2.11.0