2006-11-28 18:35:01 -07:00
|
|
|
/*
|
|
|
|
* connection tracking event cache.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#ifndef _NF_CONNTRACK_ECACHE_H
|
|
|
|
#define _NF_CONNTRACK_ECACHE_H
|
|
|
|
#include <net/netfilter/nf_conntrack.h>
|
|
|
|
|
|
|
|
#include <linux/notifier.h>
|
|
|
|
#include <linux/interrupt.h>
|
2008-10-08 03:35:07 -06:00
|
|
|
#include <net/net_namespace.h>
|
2006-11-28 18:35:01 -07:00
|
|
|
#include <net/netfilter/nf_conntrack_expect.h>
|
|
|
|
|
|
|
|
#ifdef CONFIG_NF_CONNTRACK_EVENTS
|
|
|
|
struct nf_conntrack_ecache {
|
|
|
|
struct nf_conn *ct;
|
|
|
|
unsigned int events;
|
|
|
|
};
|
|
|
|
|
|
|
|
extern struct atomic_notifier_head nf_conntrack_chain;
|
2007-03-14 17:40:10 -06:00
|
|
|
extern int nf_conntrack_register_notifier(struct notifier_block *nb);
|
|
|
|
extern int nf_conntrack_unregister_notifier(struct notifier_block *nb);
|
2006-11-28 18:35:01 -07:00
|
|
|
|
|
|
|
extern void nf_ct_deliver_cached_events(const struct nf_conn *ct);
|
|
|
|
extern void __nf_ct_event_cache_init(struct nf_conn *ct);
|
2008-10-08 03:35:07 -06:00
|
|
|
extern void nf_ct_event_cache_flush(struct net *net);
|
2006-11-28 18:35:01 -07:00
|
|
|
|
|
|
|
static inline void
|
2008-10-08 03:35:07 -06:00
|
|
|
nf_conntrack_event_cache(enum ip_conntrack_events event, struct nf_conn *ct)
|
2006-11-28 18:35:01 -07:00
|
|
|
{
|
2008-10-08 03:35:07 -06:00
|
|
|
struct net *net = nf_ct_net(ct);
|
2006-11-28 18:35:01 -07:00
|
|
|
struct nf_conntrack_ecache *ecache;
|
|
|
|
|
|
|
|
local_bh_disable();
|
2008-10-08 03:35:07 -06:00
|
|
|
ecache = per_cpu_ptr(net->ct.ecache, raw_smp_processor_id());
|
2006-11-28 18:35:01 -07:00
|
|
|
if (ct != ecache->ct)
|
|
|
|
__nf_ct_event_cache_init(ct);
|
|
|
|
ecache->events |= event;
|
|
|
|
local_bh_enable();
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline void nf_conntrack_event(enum ip_conntrack_events event,
|
|
|
|
struct nf_conn *ct)
|
|
|
|
{
|
|
|
|
if (nf_ct_is_confirmed(ct) && !nf_ct_is_dying(ct))
|
|
|
|
atomic_notifier_call_chain(&nf_conntrack_chain, event, ct);
|
|
|
|
}
|
|
|
|
|
2007-07-07 23:30:49 -06:00
|
|
|
extern struct atomic_notifier_head nf_ct_expect_chain;
|
|
|
|
extern int nf_ct_expect_register_notifier(struct notifier_block *nb);
|
|
|
|
extern int nf_ct_expect_unregister_notifier(struct notifier_block *nb);
|
2007-03-14 17:40:10 -06:00
|
|
|
|
2006-11-28 18:35:01 -07:00
|
|
|
static inline void
|
2007-07-07 23:30:49 -06:00
|
|
|
nf_ct_expect_event(enum ip_conntrack_expect_events event,
|
|
|
|
struct nf_conntrack_expect *exp)
|
2006-11-28 18:35:01 -07:00
|
|
|
{
|
2007-07-07 23:30:49 -06:00
|
|
|
atomic_notifier_call_chain(&nf_ct_expect_chain, event, exp);
|
2006-11-28 18:35:01 -07:00
|
|
|
}
|
|
|
|
|
2008-10-08 03:35:07 -06:00
|
|
|
extern int nf_conntrack_ecache_init(struct net *net);
|
|
|
|
extern void nf_conntrack_ecache_fini(struct net *net);
|
|
|
|
|
2006-11-28 18:35:01 -07:00
|
|
|
#else /* CONFIG_NF_CONNTRACK_EVENTS */
|
|
|
|
|
|
|
|
static inline void nf_conntrack_event_cache(enum ip_conntrack_events event,
|
|
|
|
const struct sk_buff *skb) {}
|
|
|
|
static inline void nf_conntrack_event(enum ip_conntrack_events event,
|
|
|
|
struct nf_conn *ct) {}
|
|
|
|
static inline void nf_ct_deliver_cached_events(const struct nf_conn *ct) {}
|
2007-07-07 23:30:49 -06:00
|
|
|
static inline void nf_ct_expect_event(enum ip_conntrack_expect_events event,
|
|
|
|
struct nf_conntrack_expect *exp) {}
|
2008-10-08 03:35:07 -06:00
|
|
|
static inline void nf_ct_event_cache_flush(struct net *net) {}
|
|
|
|
|
|
|
|
static inline int nf_conntrack_ecache_init(struct net *net)
|
|
|
|
{
|
|
|
|
return 0;
|
2008-10-09 22:10:36 -06:00
|
|
|
}
|
2008-10-08 03:35:07 -06:00
|
|
|
|
|
|
|
static inline void nf_conntrack_ecache_fini(struct net *net)
|
|
|
|
{
|
|
|
|
}
|
2006-11-28 18:35:01 -07:00
|
|
|
#endif /* CONFIG_NF_CONNTRACK_EVENTS */
|
|
|
|
|
|
|
|
#endif /*_NF_CONNTRACK_ECACHE_H*/
|
|
|
|
|