| /* |
| * 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); |
| |
| /* 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*/ |
| |