This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / include / net / netfilter / nf_conntrack_expect.h

diff --git a/include/net/netfilter/nf_conntrack_expect.h b/include/net/netfilter/nf_conntrack_expect.h
new file mode 100644 (file)
index 0000000..41bcc9e
--- /dev/null
+++ b/include/net/netfilter/nf_conntrack_expect.h
@@ -0,0 +1,80 @@
+/*
+ * connection tracking expectations.
+ */
+
+#ifndef _NF_CONNTRACK_EXPECT_H
+#define _NF_CONNTRACK_EXPECT_H
+#include <net/netfilter/nf_conntrack.h>
+
+extern struct list_head nf_conntrack_expect_list;
+extern struct kmem_cache *nf_conntrack_expect_cachep;
+extern struct file_operations exp_file_ops;
+
+struct nf_conntrack_expect
+{
+       /* Internal linked list (global expectation list) */
+       struct list_head list;
+
+       /* We expect this tuple, with the following mask */
+       struct nf_conntrack_tuple tuple, mask;
+
+       /* Function to call after setup and insertion */
+       void (*expectfn)(struct nf_conn *new,
+                        struct nf_conntrack_expect *this);
+
+       /* Helper to assign to new connection */
+       struct nf_conntrack_helper *helper;
+
+       /* The conntrack of the master connection */
+       struct nf_conn *master;
+
+       /* Timer function; deletes the expectation. */
+       struct timer_list timeout;
+
+       /* Usage count. */
+       atomic_t use;
+
+       /* Unique ID */
+       unsigned int id;
+
+       /* Flags */
+       unsigned int flags;
+
+#ifdef CONFIG_NF_NAT_NEEDED
+       __be32 saved_ip;
+       /* This is the original per-proto part, used to map the
+        * expected connection the way the recipient expects. */
+       union nf_conntrack_man_proto saved_proto;
+       /* Direction relative to the master connection. */
+       enum ip_conntrack_dir dir;
+#endif
+};
+
+#define NF_CT_EXPECT_PERMANENT 0x1
+
+
+struct nf_conntrack_expect *
+__nf_conntrack_expect_find(const struct nf_conntrack_tuple *tuple);
+
+struct nf_conntrack_expect *
+nf_conntrack_expect_find_get(const struct nf_conntrack_tuple *tuple);
+
+struct nf_conntrack_expect *
+find_expectation(const struct nf_conntrack_tuple *tuple);
+
+void nf_ct_unlink_expect(struct nf_conntrack_expect *exp);
+void nf_ct_remove_expectations(struct nf_conn *ct);
+void nf_conntrack_unexpect_related(struct nf_conntrack_expect *exp);
+
+/* Allocate space for an expectation: this is mandatory before calling
+   nf_conntrack_expect_related.  You will have to call put afterwards. */
+struct nf_conntrack_expect *nf_conntrack_expect_alloc(struct nf_conn *me);
+void nf_conntrack_expect_init(struct nf_conntrack_expect *, int,
+                             union nf_conntrack_address *,
+                             union nf_conntrack_address *,
+                             u_int8_t, __be16 *, __be16 *);
+void nf_conntrack_expect_put(struct nf_conntrack_expect *exp);
+int nf_conntrack_expect_related(struct nf_conntrack_expect *expect);
+
+#endif /*_NF_CONNTRACK_EXPECT_H*/
+