diff options
author | Alexey Dobriyan <adobriyan@sw.ru> | 2008-04-14 09:56:02 +0200 |
---|---|---|
committer | Patrick McHardy <kaber@trash.net> | 2008-04-14 09:56:02 +0200 |
commit | 666953df353194bef76086fa3f126241cbac3e3a (patch) | |
tree | bd69afed2996b0a521361efcd29e32ea7606e9ff /include/linux | |
parent | 36e2a1b0f7f2598e38952494b91490f58aa221c8 (diff) |
[NETFILTER]: ip_tables: per-netns FILTER/MANGLE/RAW tables for real
Commit 9335f047fe61587ec82ff12fbb1220bcfdd32006 aka
"[NETFILTER]: ip_tables: per-netns FILTER, MANGLE, RAW"
added per-netns _view_ of iptables rules. They were shown to user, but
ignored by filtering code. Now that it's possible to at least ping loopback,
per-netns tables can affect filtering decisions.
netns is taken in case of
PRE_ROUTING, LOCAL_IN -- from in device,
POST_ROUTING, LOCAL_OUT -- from out device,
FORWARD -- from in device which should be equal to out device's netns.
This code is relatively new, so BUG_ON was plugged.
Wrappers were added to a) keep code the same from CONFIG_NET_NS=n users
(overwhelming majority), b) consolidate code in one place -- similar
changes will be done in ipv6 and arp netfilter code.
Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'include/linux')
-rw-r--r-- | include/linux/netfilter.h | 54 |
1 files changed, 53 insertions, 1 deletions
diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h index 89e6c72ad29..66bc52060fd 100644 --- a/include/linux/netfilter.h +++ b/include/linux/netfilter.h @@ -6,11 +6,13 @@ #include <linux/types.h> #include <linux/skbuff.h> #include <linux/net.h> +#include <linux/netdevice.h> #include <linux/if.h> #include <linux/in.h> #include <linux/in6.h> #include <linux/wait.h> #include <linux/list.h> +#include <net/net_namespace.h> #endif #include <linux/compiler.h> @@ -76,7 +78,6 @@ extern void netfilter_init(void); #define NF_MAX_HOOKS 8 struct sk_buff; -struct net_device; typedef unsigned int nf_hookfn(unsigned int hooknum, struct sk_buff *skb, @@ -320,5 +321,56 @@ extern void (*nf_ct_destroy)(struct nf_conntrack *); static inline void nf_ct_attach(struct sk_buff *new, struct sk_buff *skb) {} #endif +static inline struct net *nf_pre_routing_net(const struct net_device *in, + const struct net_device *out) +{ +#ifdef CONFIG_NET_NS + return in->nd_net; +#else + return &init_net; +#endif +} + +static inline struct net *nf_local_in_net(const struct net_device *in, + const struct net_device *out) +{ +#ifdef CONFIG_NET_NS + return in->nd_net; +#else + return &init_net; +#endif +} + +static inline struct net *nf_forward_net(const struct net_device *in, + const struct net_device *out) +{ +#ifdef CONFIG_NET_NS + BUG_ON(in->nd_net != out->nd_net); + return in->nd_net; +#else + return &init_net; +#endif +} + +static inline struct net *nf_local_out_net(const struct net_device *in, + const struct net_device *out) +{ +#ifdef CONFIG_NET_NS + return out->nd_net; +#else + return &init_net; +#endif +} + +static inline struct net *nf_post_routing_net(const struct net_device *in, + const struct net_device *out) +{ +#ifdef CONFIG_NET_NS + return out->nd_net; +#else + return &init_net; +#endif +} + #endif /*__KERNEL__*/ #endif /*__LINUX_NETFILTER_H*/ |