neigh: no need to call lookup_neigh_parms in neigh_parms_alloc

neigh_table.parms always exist and is initialized,kmemdup
can use it to create new neigh_parms, actually lookup_neigh_parms
here will return neigh_table.parms too.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 6 deletions

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index decaa4b9db2f..53eab513955a 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -1429,15 +1429,11 @@ static inline struct neigh_parms *lookup_neigh_parms(struct neigh_table *tbl,
 struct neigh_parms *neigh_parms_alloc(struct net_device *dev,
                                       struct neigh_table *tbl)
 {
-        struct neigh_parms *p, *ref;
+        struct neigh_parms *p;
         struct net *net = dev_net(dev);
         const struct net_device_ops *ops = dev->netdev_ops;
 
-        ref = lookup_neigh_parms(tbl, net, 0);
-        if (!ref)
-                return NULL;
-
-        p = kmemdup(ref, sizeof(*p), GFP_KERNEL);
+        p = kmemdup(&tbl->parms, sizeof(*p), GFP_KERNEL);
         if (p) {
                 p->tbl            = tbl;
                 atomic_set(&p->refcnt, 1);