[NETFILTER]: nf_conntrack: split out expectation handling
This patch splits out expectation handling into its own file
nf_conntrack_expect.c
Signed-off-by: Martin Josefsson <gandalf@wlug.westbo.se>
Signed-off-by: Patrick McHardy <kaber@trash.net>
diff --git a/include/net/netfilter/nf_conntrack_expect.h b/include/net/netfilter/nf_conntrack_expect.h
new file mode 100644
index 0000000..5aa483e
--- /dev/null
+++ b/include/net/netfilter/nf_conntrack_expect.h
@@ -0,0 +1,72 @@
+/*
+ * 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 kmem_cache_t *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);
+
+ /* 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
+ /* This is the original per-proto part, used to map the
+ * expected connection the way the recipient expects. */
+ union nf_conntrack_manip_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(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_put(struct nf_conntrack_expect *exp);
+int nf_conntrack_expect_related(struct nf_conntrack_expect *expect);
+
+#endif /*_NF_CONNTRACK_EXPECT_H*/
+