netdev - [PATCH 01/10] batman-adv: move hardif refcount inc to batadv_neigh_node

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Message-Id: <1440753156-7808-2-git-send-email-antonio@meshcoding.com>
Date:	Fri, 28 Aug 2015 11:12:27 +0200
From:	Antonio Quartulli <antonio@...hcoding.com>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, b.a.t.m.a.n@...ts.open-mesh.org,
	Marek Lindner <mareklindner@...mailbox.ch>,
	Antonio Quartulli <antonio@...hcoding.com>
Subject: [PATCH 01/10] batman-adv: move hardif refcount inc to batadv_neigh_node_new()

From: Marek Lindner <mareklindner@...mailbox.ch>

The batadv_neigh_node cleanup function 'batadv_neigh_node_free_rcu()'
takes care of reducing the hardif refcounter, hence it's only logical
to assume the creating function of that same object
'batadv_neigh_node_new()' takes care of increasing the same refcounter.

Signed-off-by: Marek Lindner <mareklindner@...mailbox.ch>
Acked-by: Simon Wunderlich <sw@...onwunderlich.de>
Signed-off-by: Antonio Quartulli <antonio@...hcoding.com>
---
 net/batman-adv/bat_iv_ogm.c | 6 ------
 net/batman-adv/originator.c | 6 ++++++
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 5c12200..b9b8b33 100644
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -303,12 +303,6 @@ batadv_iv_ogm_neigh_new(struct batadv_hard_iface *hard_iface,
 	if (!neigh_node)
 		goto out;
 
-	if (!atomic_inc_not_zero(&hard_iface->refcount)) {
-		kfree(neigh_node);
-		neigh_node = NULL;
-		goto out;
-	}
-
 	neigh_node->orig_node = orig_neigh;
 	neigh_node->if_incoming = hard_iface;
 
diff --git a/net/batman-adv/originator.c b/net/batman-adv/originator.c
index 610620a..f8317c1 100644
--- a/net/batman-adv/originator.c
+++ b/net/batman-adv/originator.c
@@ -461,6 +461,12 @@ batadv_neigh_node_new(struct batadv_hard_iface *hard_iface,
 	if (!neigh_node)
 		goto out;
 
+	if (!atomic_inc_not_zero(&hard_iface->refcount)) {
+		kfree(neigh_node);
+		neigh_node = NULL;
+		goto out;
+	}
+
 	INIT_HLIST_NODE(&neigh_node->list);
 	INIT_HLIST_HEAD(&neigh_node->ifinfo_list);
 	spin_lock_init(&neigh_node->ifinfo_lock);
-- 
2.5.0

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