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netfilter: enable netfilter in netns

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From kernel perspective, allow entrance in nf_hook_slow().

Stuff which uses nf_register_hook/nf_register_hooks, but otherwise not netns-ready:

	DECnet netfilter
	ipt_CLUSTERIP
	nf_nat_standalone.c together with XFRM (?)
	IPVS
	several individual match modules (like hashlimit)
	ctnetlink
	NOTRACK
	all sorts of queueing and reporting to userspace
	L3 and L4 protocol sysctls, bridge sysctls
	probably something else

Anyway critical mass has been achieved, there is no reason to hide netfilter any longer.

From userspace perspective, allow to manipulate all sorts of
iptables/ip6tables/arptables rules.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Patrick McHardy <kaber@trash.net>
This commit is contained in:
Alexey Dobriyan 2008-10-08 11:35:11 +02:00 committed by Patrick McHardy
parent cfd6e3d747
commit 4de6f16b9e
2 changed files with 0 additions and 11 deletions
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8
net/netfilter/core.c
View file

@ -165,14 +165,6 @@ int nf_hook_slow(u_int8_t pf, unsigned int hook, struct sk_buff *skb,
unsigned int verdict;
int ret = 0;
#ifdef CONFIG_NET_NS
struct net *net;
net = indev == NULL ? dev_net(outdev) : dev_net(indev);
if (net != &init_net)
return 1;
#endif
/* We may already have this, but read-locks nest anyway */
rcu_read_lock();

3
net/netfilter/nf_sockopt.c
View file

@ -65,9 +65,6 @@ static struct nf_sockopt_ops *nf_sockopt_find(struct sock *sk, u_int8_t pf,
{
struct nf_sockopt_ops *ops;
if (!net_eq(sock_net(sk), &init_net))
return ERR_PTR(-ENOPROTOOPT);
if (mutex_lock_interruptible(&nf_sockopt_mutex) != 0)
return ERR_PTR(-EINTR);