1 files changed, 76 insertions, 0 deletions
diff --git a/include/net/netfilter/nf_conntrack_core.h b/include/net/netfilter/nf_conntrack_core.h
new file mode 100644
index 00000000000000..da254525a4ceb7
--- /dev/null
+++ b/include/net/netfilter/nf_conntrack_core.h
@@ -0,0 +1,76 @@
+/*
+ * This header is used to share core functionality between the
+ * standalone connection tracking module, and the compatibility layer's use
+ * of connection tracking.
+ *
+ * 16 Dec 2003: Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp>
+ *	- generalize L3 protocol dependent part.
+ *
+ * Derived from include/linux/netfiter_ipv4/ip_conntrack_core.h
+ */
+
+#ifndef _NF_CONNTRACK_CORE_H
+#define _NF_CONNTRACK_CORE_H
+
+#include <linux/netfilter.h>
+
+/* This header is used to share core functionality between the
+   standalone connection tracking module, and the compatibility layer's use
+   of connection tracking. */
+extern unsigned int nf_conntrack_in(int pf,
+				    unsigned int hooknum,
+				    struct sk_buff **pskb);
+
+extern int nf_conntrack_init(void);
+extern void nf_conntrack_cleanup(void);
+
+struct nf_conntrack_l3proto;
+extern struct nf_conntrack_l3proto *nf_ct_find_l3proto(u_int16_t pf);
+/* Like above, but you already have conntrack read lock. */
+extern struct nf_conntrack_l3proto *__nf_ct_find_l3proto(u_int16_t l3proto);
+
+struct nf_conntrack_protocol;
+
+extern int
+nf_ct_get_tuple(const struct sk_buff *skb,
+		unsigned int nhoff,
+		unsigned int dataoff,
+		u_int16_t l3num,
+		u_int8_t protonum,
+		struct nf_conntrack_tuple *tuple,
+		const struct nf_conntrack_l3proto *l3proto,
+		const struct nf_conntrack_protocol *protocol);
+
+extern int
+nf_ct_invert_tuple(struct nf_conntrack_tuple *inverse,
+		   const struct nf_conntrack_tuple *orig,
+		   const struct nf_conntrack_l3proto *l3proto,
+		   const struct nf_conntrack_protocol *protocol);
+
+/* Find a connection corresponding to a tuple. */
+extern struct nf_conntrack_tuple_hash *
+nf_conntrack_find_get(const struct nf_conntrack_tuple *tuple,
+		      const struct nf_conn *ignored_conntrack);
+
+extern int __nf_conntrack_confirm(struct sk_buff **pskb);
+
+/* Confirm a connection: returns NF_DROP if packet must be dropped. */
+static inline int nf_conntrack_confirm(struct sk_buff **pskb)
+{
+	struct nf_conn *ct = (struct nf_conn *)(*pskb)->nfct;
+	int ret = NF_ACCEPT;
+
+	if (ct) {
+		if (!nf_ct_is_confirmed(ct))
+			ret = __nf_conntrack_confirm(pskb);
+		nf_ct_deliver_cached_events(ct);
+	}
+	return ret;
+}
+
+extern void __nf_conntrack_attach(struct sk_buff *nskb, struct sk_buff *skb);
+
+extern struct list_head *nf_conntrack_hash;
+extern struct list_head nf_conntrack_expect_list;
+extern rwlock_t nf_conntrack_lock ;
+#endif /* _NF_CONNTRACK_CORE_H */