IPVS: netns, add basic init per netns.

Preparation for network name-space init, in this stage
some empty functions exists.

In most files there is a check if it is root ns i.e. init_net
if (!net_eq(net, &init_net))
        return ...
this will be removed by the last patch, when enabling name-space.

*v3
 ip_vs_conn.c merge error corrected.
 net_ipvs #ifdef removed as sugested by Jan Engelhardt

[ horms@verge.net.au: Removed whitespace-change-only hunks ]
Signed-off-by: Hans Schillstrom <hans.schillstrom@ericsson.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>

1 files changed, 19 insertions, 1 deletions

diff --git a/net/netfilter/ipvs/ip_vs_est.c b/net/netfilter/ipvs/ip_vs_est.c
index ff28801..7417a0c 100644
--- a/net/netfilter/ipvs/ip_vs_est.c
+++ b/net/netfilter/ipvs/ip_vs_est.c
@@ -157,13 +157,31 @@ void ip_vs_zero_estimator(struct ip_vs_stats *stats)
 	est->outbps = 0;
 }
 
+static int __net_init __ip_vs_estimator_init(struct net *net)
+{
+	if (!net_eq(net, &init_net))	/* netns not enabled yet */
+		return -EPERM;
+
+	return 0;
+}
+
+static struct pernet_operations ip_vs_app_ops = {
+	.init = __ip_vs_estimator_init,
+};
+
 int __init ip_vs_estimator_init(void)
 {
+	int rv;
+
+	rv = register_pernet_subsys(&ip_vs_app_ops);
+	if (rv < 0)
+		return rv;
 	mod_timer(&est_timer, jiffies + 2 * HZ);
-	return 0;
+	return rv;
 }
 
 void ip_vs_estimator_cleanup(void)
 {
 	del_timer_sync(&est_timer);
+	unregister_pernet_subsys(&ip_vs_app_ops);
 }