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From: Stephen Hemminger <stephen@networkplumber.org>
To: Pravin B Shelar <pshelar@nicira.com>, David Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Subject: [PATCH net-next] ip: initialize hash list
Date: Sat, 20 Jul 2013 10:26:57 -0700	[thread overview]
Message-ID: <20130720102657.768a11ea@nehalam.linuxnetplumber.net> (raw)

Rather than relying on the assumption that zero means empty on
hash list head, the code should use the initialization macro.
Same effect, but follows API and avoids future breakage if hlist
implementation changes.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>


--- a/net/ipv4/ip_tunnel.c	2013-07-19 09:12:37.213529343 -0700
+++ b/net/ipv4/ip_tunnel.c	2013-07-19 09:37:00.960764421 -0700
@@ -838,10 +838,15 @@ int ip_tunnel_init_net(struct net *net,
 {
 	struct ip_tunnel_net *itn = net_generic(net, ip_tnl_net_id);
 	struct ip_tunnel_parm parms;
+	unsigned i;
 
-	itn->tunnels = kzalloc(IP_TNL_HASH_SIZE * sizeof(struct hlist_head), GFP_KERNEL);
+	itn->tunnels = kmalloc(IP_TNL_HASH_SIZE * sizeof(struct hlist_head),
+			       GFP_KERNEL);
 	if (!itn->tunnels)
 		return -ENOMEM;
+
+	for (i = 0; i < IP_TNL_HASH_SIZE; i++)
+		INIT_HLIST_HEAD(&itn->tunnels[i]);
 
 	if (!ops) {
 		itn->fb_tunnel_dev = NULL;

             reply	other threads:[~2013-07-20 17:27 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-07-20 17:26 Stephen Hemminger [this message]
2013-07-20 17:46 ` Joe Perches
2013-07-22 14:52   ` Stephen Hemminger
2013-07-22 15:06     ` Joe Perches
2013-07-22 15:15       ` Eric Dumazet
2013-07-22 15:31         ` Joe Perches
2013-07-20 19:20 ` David Miller
2013-07-20 20:28   ` Joe Perches
2013-07-22 15:17 ` Eric Dumazet

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