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- /*
- * 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 const 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*/
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