[Devel] [PATCH 8/11 net-2.6.26] [NETNS]: Process netfilter hooks in initial namespace only.

[Denis V. Lunev]

There were no packets in the namespace other than initial previously. This
will be changed in the neareast future. Netfilters are not namespace aware
and should be processed in the initial namespace only for now.

Signed-off-by: Denis V. Lunev <den at openvz.org>
CC: Patrick McHardy <kaber at trash.net>
---
 net/netfilter/core.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/net/netfilter/core.c b/net/netfilter/core.c
index c4065b8..ec05684 100644
--- a/net/netfilter/core.c
+++ b/net/netfilter/core.c
@@ -165,6 +165,14 @@ int nf_hook_slow(int pf, unsigned int hook, struct sk_buff *skb,
 	unsigned int verdict;
 	int ret = 0;
 
+#ifdef CONFIG_NET_NS
+	struct net *net;
+
+	net = indev == NULL ? outdev->nd_net : indev->nd_net;
+	if (net != &init_net)
+		return 1;
+#endif
+
 	/* We may already have this, but read-locks nest anyway */
 	rcu_read_lock();
 
-- 
1.5.3.rc5