#ifndef _NF_CONNTRACK_HELPER_H
#define _NF_CONNTRACK_HELPER_H
#include <net/netfilter/nf_conntrack.h>
+#include <net/netfilter/nf_conntrack_extend.h>
struct module;
struct nf_conntrack_helper
-{
- struct list_head list; /* Internal use. */
+{
+ struct hlist_node hnode; /* Internal use. */
const char *name; /* name of the module */
struct module *me; /* pointer to self */
* expected connections */
unsigned int timeout; /* timeout for expecteds */
- /* Mask of things we will help (compared against server response) */
+ /* Tuple of things we will help (compared against server response) */
struct nf_conntrack_tuple tuple;
- struct nf_conntrack_tuple mask;
-
+
/* Function to call when data passes; return verdict, or -1 to
invalidate. */
int (*help)(struct sk_buff **pskb,
struct nf_conn *ct,
enum ip_conntrack_info conntrackinfo);
+ void (*destroy)(struct nf_conn *ct);
+
int (*to_nfattr)(struct sk_buff *skb, const struct nf_conn *ct);
};
+extern struct nf_conntrack_helper *
+__nf_ct_helper_find(const struct nf_conntrack_tuple *tuple);
+
+extern struct nf_conntrack_helper *
+nf_ct_helper_find_get( const struct nf_conntrack_tuple *tuple);
+
+extern struct nf_conntrack_helper *
+__nf_conntrack_helper_find_byname(const char *name);
+
+extern void nf_ct_helper_put(struct nf_conntrack_helper *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);
+extern struct nf_conn_help *nf_ct_helper_ext_add(struct nf_conn *ct, gfp_t gfp);
+static inline struct nf_conn_help *nfct_help(const struct nf_conn *ct)
+{
+ return nf_ct_ext_find(ct, NF_CT_EXT_HELPER);
+}
#endif /*_NF_CONNTRACK_HELPER_H*/