mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 02:39:48 +00:00
![Patrick McHardy](/assets/img/avatar_default.png)
Currently there is a wild mix of nf_conntrack_expect_, nf_ct_exp_, expect_, exp_, ... Consistently use nf_ct_ as prefix for exported functions. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
/*
|
|
* 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>
|
|
#include <net/netfilter/nf_conntrack_expect.h>
|
|
|
|
#ifdef CONFIG_NF_CONNTRACK_EVENTS
|
|
struct nf_conntrack_ecache {
|
|
struct nf_conn *ct;
|
|
unsigned int events;
|
|
};
|
|
DECLARE_PER_CPU(struct nf_conntrack_ecache, nf_conntrack_ecache);
|
|
|
|
#define CONNTRACK_ECACHE(x) (__get_cpu_var(nf_conntrack_ecache).x)
|
|
|
|
extern struct atomic_notifier_head nf_conntrack_chain;
|
|
extern int nf_conntrack_register_notifier(struct notifier_block *nb);
|
|
extern int nf_conntrack_unregister_notifier(struct notifier_block *nb);
|
|
|
|
extern void nf_ct_deliver_cached_events(const struct nf_conn *ct);
|
|
extern void __nf_ct_event_cache_init(struct nf_conn *ct);
|
|
extern void nf_ct_event_cache_flush(void);
|
|
|
|
static inline void
|
|
nf_conntrack_event_cache(enum ip_conntrack_events event,
|
|
const struct sk_buff *skb)
|
|
{
|
|
struct nf_conn *ct = (struct nf_conn *)skb->nfct;
|
|
struct nf_conntrack_ecache *ecache;
|
|
|
|
local_bh_disable();
|
|
ecache = &__get_cpu_var(nf_conntrack_ecache);
|
|
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);
|
|
}
|
|
|
|
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);
|
|
|
|
static inline void
|
|
nf_ct_expect_event(enum ip_conntrack_expect_events event,
|
|
struct nf_conntrack_expect *exp)
|
|
{
|
|
atomic_notifier_call_chain(&nf_ct_expect_chain, event, exp);
|
|
}
|
|
|
|
#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) {}
|
|
static inline void nf_ct_expect_event(enum ip_conntrack_expect_events event,
|
|
struct nf_conntrack_expect *exp) {}
|
|
static inline void nf_ct_event_cache_flush(void) {}
|
|
#endif /* CONFIG_NF_CONNTRACK_EVENTS */
|
|
|
|
#endif /*_NF_CONNTRACK_ECACHE_H*/
|
|
|