netdev - [PATCH net-next 1/2] neighbour: populate neigh_parms on alloc before calling ndo_neigh

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Message-Id: <1375463259-12033-2-git-send-email-vfalico@redhat.com>
Date:	Fri,  2 Aug 2013 19:07:38 +0200
From:	Veaceslav Falico <vfalico@...hat.com>
To:	netdev@...r.kernel.org
Cc:	vfalico@...hat.com, fubar@...ibm.com, andy@...yhouse.net,
	ebiederm@...ssion.com, joe@...ches.com
Subject: [PATCH net-next 1/2] neighbour: populate neigh_parms on alloc before calling ndo_neigh_setup

dev->ndo_neigh_setup() might need some of the values of neigh_parms, so
populate them before calling it.

Signed-off-by: Veaceslav Falico <vfalico@...hat.com>
---
 net/core/neighbour.c |   10 ++++++----
 1 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index b7de821..576d46f 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -1441,16 +1441,18 @@ struct neigh_parms *neigh_parms_alloc(struct net_device *dev,
 		atomic_set(&p->refcnt, 1);
 		p->reachable_time =
 				neigh_rand_reach_time(p->base_reachable_time);
+		dev_hold(dev);
+		p->dev = dev;
+		write_pnet(&p->net, hold_net(net));
+		p->sysctl_table = NULL;
 
 		if (ops->ndo_neigh_setup && ops->ndo_neigh_setup(dev, p)) {
+			release_net(net);
+			dev_put(dev);
 			kfree(p);
 			return NULL;
 		}
 
-		dev_hold(dev);
-		p->dev = dev;
-		write_pnet(&p->net, hold_net(net));
-		p->sysctl_table = NULL;
 		write_lock_bh(&tbl->lock);
 		p->next		= tbl->parms.next;
 		tbl->parms.next = p;
-- 
1.7.1

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