[NETFILTER]: nf_conntrack: split out the event cache

This patch splits out the event cache into its own file
nf_conntrack_ecache.c

Signed-off-by: Martin Josefsson <gandalf@wlug.westbo.se>
Signed-off-by: Patrick McHardy <kaber@trash.net>

3 files changed, 96 insertions, 81 deletions

diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h
index 9d2581f..9a29505 100644
--- a/include/net/netfilter/nf_conntrack.h
+++ b/include/net/netfilter/nf_conntrack.h
@@ -244,87 +244,6 @@ extern int nf_conntrack_checksum;
 
 #define NF_CT_STAT_INC(count) (__get_cpu_var(nf_conntrack_stat).count++)
 
-#ifdef CONFIG_NF_CONNTRACK_EVENTS
-#include <linux/notifier.h>
-#include <linux/interrupt.h>
-#include <net/netfilter/nf_conntrack_expect.h>
-
-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 struct atomic_notifier_head nf_conntrack_expect_chain;
-
-static inline int nf_conntrack_register_notifier(struct notifier_block *nb)
-{
-	return atomic_notifier_chain_register(&nf_conntrack_chain, nb);
-}
-
-static inline int nf_conntrack_unregister_notifier(struct notifier_block *nb)
-{
-	return atomic_notifier_chain_unregister(&nf_conntrack_chain, nb);
-}
-
-static inline int
-nf_conntrack_expect_register_notifier(struct notifier_block *nb)
-{
-	return atomic_notifier_chain_register(&nf_conntrack_expect_chain, nb);
-}
-
-static inline int
-nf_conntrack_expect_unregister_notifier(struct notifier_block *nb)
-{
-	return atomic_notifier_chain_unregister(&nf_conntrack_expect_chain,
-			nb);
-}
-
-extern void nf_ct_deliver_cached_events(const struct nf_conn *ct);
-extern void __nf_ct_event_cache_init(struct nf_conn *ct);
-
-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);
-}
-
-static inline void
-nf_conntrack_expect_event(enum ip_conntrack_expect_events event,
-			  struct nf_conntrack_expect *exp)
-{
-	atomic_notifier_call_chain(&nf_conntrack_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_conntrack_expect_event(enum ip_conntrack_expect_events event,
-			  struct nf_conntrack_expect *exp) {}
-#endif /* CONFIG_NF_CONNTRACK_EVENTS */
-
 /* no helper, no nat */
 #define	NF_CT_F_BASIC	0
 /* for helper */
diff --git a/include/net/netfilter/nf_conntrack_core.h b/include/net/netfilter/nf_conntrack_core.h
index bf8d300..4676b49 100644
--- a/include/net/netfilter/nf_conntrack_core.h
+++ b/include/net/netfilter/nf_conntrack_core.h
@@ -15,6 +15,7 @@
 #include <linux/netfilter.h>
 #include <net/netfilter/nf_conntrack_l3proto.h>
 #include <net/netfilter/nf_conntrack_protocol.h>
+#include <net/netfilter/nf_conntrack_ecache.h>
 
 /* This header is used to share core functionality between the
    standalone connection tracking module, and the compatibility layer's use
diff --git a/include/net/netfilter/nf_conntrack_ecache.h b/include/net/netfilter/nf_conntrack_ecache.h
new file mode 100644
index 0000000..b62a8a9
--- /dev/null
+++ b/include/net/netfilter/nf_conntrack_ecache.h
@@ -0,0 +1,95 @@
+/*
+ * 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 struct atomic_notifier_head nf_conntrack_expect_chain;
+
+static inline int nf_conntrack_register_notifier(struct notifier_block *nb)
+{
+	return atomic_notifier_chain_register(&nf_conntrack_chain, nb);
+}
+
+static inline int nf_conntrack_unregister_notifier(struct notifier_block *nb)
+{
+	return atomic_notifier_chain_unregister(&nf_conntrack_chain, nb);
+}
+
+static inline int
+nf_conntrack_expect_register_notifier(struct notifier_block *nb)
+{
+	return atomic_notifier_chain_register(&nf_conntrack_expect_chain, nb);
+}
+
+static inline int
+nf_conntrack_expect_unregister_notifier(struct notifier_block *nb)
+{
+	return atomic_notifier_chain_unregister(&nf_conntrack_expect_chain,
+			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);
+}
+
+static inline void
+nf_conntrack_expect_event(enum ip_conntrack_expect_events event,
+			  struct nf_conntrack_expect *exp)
+{
+	atomic_notifier_call_chain(&nf_conntrack_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_conntrack_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*/
+