6823645d60
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>
77 lines
2.4 KiB
C
77 lines
2.4 KiB
C
/*
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* connection tracking event cache.
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*/
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#ifndef _NF_CONNTRACK_ECACHE_H
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#define _NF_CONNTRACK_ECACHE_H
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#include <net/netfilter/nf_conntrack.h>
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#include <linux/notifier.h>
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#include <linux/interrupt.h>
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#include <net/netfilter/nf_conntrack_expect.h>
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#ifdef CONFIG_NF_CONNTRACK_EVENTS
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struct nf_conntrack_ecache {
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struct nf_conn *ct;
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unsigned int events;
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};
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DECLARE_PER_CPU(struct nf_conntrack_ecache, nf_conntrack_ecache);
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#define CONNTRACK_ECACHE(x) (__get_cpu_var(nf_conntrack_ecache).x)
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extern struct atomic_notifier_head nf_conntrack_chain;
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extern int nf_conntrack_register_notifier(struct notifier_block *nb);
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extern int nf_conntrack_unregister_notifier(struct notifier_block *nb);
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extern void nf_ct_deliver_cached_events(const struct nf_conn *ct);
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extern void __nf_ct_event_cache_init(struct nf_conn *ct);
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extern void nf_ct_event_cache_flush(void);
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static inline void
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nf_conntrack_event_cache(enum ip_conntrack_events event,
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const struct sk_buff *skb)
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{
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struct nf_conn *ct = (struct nf_conn *)skb->nfct;
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struct nf_conntrack_ecache *ecache;
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local_bh_disable();
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ecache = &__get_cpu_var(nf_conntrack_ecache);
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if (ct != ecache->ct)
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__nf_ct_event_cache_init(ct);
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ecache->events |= event;
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local_bh_enable();
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}
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static inline void nf_conntrack_event(enum ip_conntrack_events event,
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struct nf_conn *ct)
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{
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if (nf_ct_is_confirmed(ct) && !nf_ct_is_dying(ct))
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atomic_notifier_call_chain(&nf_conntrack_chain, event, ct);
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}
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extern struct atomic_notifier_head nf_ct_expect_chain;
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extern int nf_ct_expect_register_notifier(struct notifier_block *nb);
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extern int nf_ct_expect_unregister_notifier(struct notifier_block *nb);
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static inline void
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nf_ct_expect_event(enum ip_conntrack_expect_events event,
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struct nf_conntrack_expect *exp)
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{
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atomic_notifier_call_chain(&nf_ct_expect_chain, event, exp);
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}
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#else /* CONFIG_NF_CONNTRACK_EVENTS */
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static inline void nf_conntrack_event_cache(enum ip_conntrack_events event,
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const struct sk_buff *skb) {}
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static inline void nf_conntrack_event(enum ip_conntrack_events event,
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struct nf_conn *ct) {}
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static inline void nf_ct_deliver_cached_events(const struct nf_conn *ct) {}
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static inline void nf_ct_expect_event(enum ip_conntrack_expect_events event,
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struct nf_conntrack_expect *exp) {}
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static inline void nf_ct_event_cache_flush(void) {}
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#endif /* CONFIG_NF_CONNTRACK_EVENTS */
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#endif /*_NF_CONNTRACK_ECACHE_H*/
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