[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>

4 files changed, 80 insertions, 58 deletions

diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h
index 1fbd8193d5f1..9d2581fc04be 100644
--- a/include/net/netfilter/nf_conntrack.h
+++ b/include/net/netfilter/nf_conntrack.h
@@ -124,44 +124,6 @@ struct nf_conn
         char data[0];
 };
 
-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
-
 static inline struct nf_conn *
 nf_ct_tuplehash_to_ctrack(const struct nf_conntrack_tuple_hash *hash)
 {
@@ -208,16 +170,6 @@ __nf_conntrack_find(const struct nf_conntrack_tuple *tuple,
 
 extern void nf_conntrack_hash_insert(struct nf_conn *ct);
 
-extern struct nf_conntrack_expect *
-__nf_conntrack_expect_find(const struct nf_conntrack_tuple *tuple);
-
-extern struct nf_conntrack_expect *
-nf_conntrack_expect_find(const struct nf_conntrack_tuple *tuple);
-
-extern void nf_ct_unlink_expect(struct nf_conntrack_expect *exp);
-
-extern void nf_ct_remove_expectations(struct nf_conn *ct);
-
 extern void nf_conntrack_flush(void);
 
 extern struct nf_conntrack_helper *
@@ -295,6 +247,7 @@ extern int nf_conntrack_checksum;
 #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;
diff --git a/include/net/netfilter/nf_conntrack_core.h b/include/net/netfilter/nf_conntrack_core.h
index da254525a4ce..84a8e01941fb 100644
--- a/include/net/netfilter/nf_conntrack_core.h
+++ b/include/net/netfilter/nf_conntrack_core.h
@@ -13,6 +13,8 @@
 #define _NF_CONNTRACK_CORE_H
 
 #include <linux/netfilter.h>
+#include <net/netfilter/nf_conntrack_l3proto.h>
+#include <net/netfilter/nf_conntrack_protocol.h>
 
 /* This header is used to share core functionality between the
    standalone connection tracking module, and the compatibility layer's use
@@ -70,6 +72,11 @@ static inline int nf_conntrack_confirm(struct sk_buff **pskb)
 
 extern void __nf_conntrack_attach(struct sk_buff *nskb, struct sk_buff *skb);
 
+int
+print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple,
+            struct nf_conntrack_l3proto *l3proto,
+            struct nf_conntrack_protocol *proto);
+
 extern struct list_head *nf_conntrack_hash;
 extern struct list_head nf_conntrack_expect_list;
 extern rwlock_t nf_conntrack_lock ;
diff --git a/include/net/netfilter/nf_conntrack_expect.h b/include/net/netfilter/nf_conntrack_expect.h
new file mode 100644
index 000000000000..5aa483e03455
--- /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*/
+
diff --git a/include/net/netfilter/nf_conntrack_helper.h b/include/net/netfilter/nf_conntrack_helper.h
index 86ec8174ad02..3cbd13e22160 100644
--- a/include/net/netfilter/nf_conntrack_helper.h
+++ b/include/net/netfilter/nf_conntrack_helper.h
@@ -40,14 +40,4 @@ struct nf_conntrack_helper
 extern int nf_conntrack_helper_register(struct nf_conntrack_helper *);
 extern void nf_conntrack_helper_unregister(struct nf_conntrack_helper *);
 
-/* Allocate space for an expectation: this is mandatory before calling
-   nf_conntrack_expect_related.  You will have to call put afterwards. */
-extern struct nf_conntrack_expect *
-nf_conntrack_expect_alloc(struct nf_conn *master);
-extern void nf_conntrack_expect_put(struct nf_conntrack_expect *exp);
-
-/* Add an expected connection: can have more than one per connection */
-extern int nf_conntrack_expect_related(struct nf_conntrack_expect *exp);
-extern void nf_conntrack_unexpect_related(struct nf_conntrack_expect *exp);
-
 #endif /*_NF_CONNTRACK_HELPER_H*/