2 * connection tracking expectations.
5 #ifndef _NF_CONNTRACK_EXPECT_H
6 #define _NF_CONNTRACK_EXPECT_H
7 #include <net/netfilter/nf_conntrack.h>
9 extern struct list_head nf_conntrack_expect_list
;
10 extern kmem_cache_t
*nf_conntrack_expect_cachep
;
11 extern struct file_operations exp_file_ops
;
13 struct nf_conntrack_expect
15 /* Internal linked list (global expectation list) */
16 struct list_head list
;
18 /* We expect this tuple, with the following mask */
19 struct nf_conntrack_tuple tuple
, mask
;
21 /* Function to call after setup and insertion */
22 void (*expectfn
)(struct nf_conn
*new,
23 struct nf_conntrack_expect
*this);
25 /* Helper to assign to new connection */
26 struct nf_conntrack_helper
*helper
;
28 /* The conntrack of the master connection */
29 struct nf_conn
*master
;
31 /* Timer function; deletes the expectation. */
32 struct timer_list timeout
;
43 #ifdef CONFIG_NF_NAT_NEEDED
45 /* This is the original per-proto part, used to map the
46 * expected connection the way the recipient expects. */
47 union nf_conntrack_man_proto saved_proto
;
48 /* Direction relative to the master connection. */
49 enum ip_conntrack_dir dir
;
53 #define NF_CT_EXPECT_PERMANENT 0x1
56 struct nf_conntrack_expect
*
57 __nf_conntrack_expect_find(const struct nf_conntrack_tuple
*tuple
);
59 struct nf_conntrack_expect
*
60 nf_conntrack_expect_find_get(const struct nf_conntrack_tuple
*tuple
);
62 struct nf_conntrack_expect
*
63 find_expectation(const struct nf_conntrack_tuple
*tuple
);
65 void nf_ct_unlink_expect(struct nf_conntrack_expect
*exp
);
66 void nf_ct_remove_expectations(struct nf_conn
*ct
);
67 void nf_conntrack_unexpect_related(struct nf_conntrack_expect
*exp
);
69 /* Allocate space for an expectation: this is mandatory before calling
70 nf_conntrack_expect_related. You will have to call put afterwards. */
71 struct nf_conntrack_expect
*nf_conntrack_expect_alloc(struct nf_conn
*me
);
72 void nf_conntrack_expect_init(struct nf_conntrack_expect
*, int,
73 union nf_conntrack_address
*,
74 union nf_conntrack_address
*,
75 u_int8_t
, __be16
*, __be16
*);
76 void nf_conntrack_expect_put(struct nf_conntrack_expect
*exp
);
77 int nf_conntrack_expect_related(struct nf_conntrack_expect
*expect
);
79 #endif /*_NF_CONNTRACK_EXPECT_H*/