1 #ifndef _NF_CONNTRACK_TIMEOUT_H
2 #define _NF_CONNTRACK_TIMEOUT_H
4 #include <net/net_namespace.h>
5 #include <linux/netfilter/nf_conntrack_common.h>
6 #include <linux/netfilter/nf_conntrack_tuple_common.h>
7 #include <linux/refcount.h>
8 #include <net/netfilter/nf_conntrack.h>
9 #include <net/netfilter/nf_conntrack_extend.h>
11 #define CTNL_TIMEOUT_NAME_MAX 32
14 struct list_head head;
15 struct rcu_head rcu_head;
17 char name[CTNL_TIMEOUT_NAME_MAX];
19 struct nf_conntrack_l4proto *l4proto;
23 struct nf_conn_timeout {
24 struct ctnl_timeout __rcu *timeout;
27 static inline unsigned int *
28 nf_ct_timeout_data(struct nf_conn_timeout *t)
30 struct ctnl_timeout *timeout;
32 timeout = rcu_dereference(t->timeout);
36 return (unsigned int *)timeout->data;
40 struct nf_conn_timeout *nf_ct_timeout_find(const struct nf_conn *ct)
42 #ifdef CONFIG_NF_CONNTRACK_TIMEOUT
43 return nf_ct_ext_find(ct, NF_CT_EXT_TIMEOUT);
50 struct nf_conn_timeout *nf_ct_timeout_ext_add(struct nf_conn *ct,
51 struct ctnl_timeout *timeout,
54 #ifdef CONFIG_NF_CONNTRACK_TIMEOUT
55 struct nf_conn_timeout *timeout_ext;
57 timeout_ext = nf_ct_ext_add(ct, NF_CT_EXT_TIMEOUT, gfp);
58 if (timeout_ext == NULL)
61 rcu_assign_pointer(timeout_ext->timeout, timeout);
69 static inline unsigned int *
70 nf_ct_timeout_lookup(struct net *net, struct nf_conn *ct,
71 struct nf_conntrack_l4proto *l4proto)
73 #ifdef CONFIG_NF_CONNTRACK_TIMEOUT
74 struct nf_conn_timeout *timeout_ext;
75 unsigned int *timeouts;
77 timeout_ext = nf_ct_timeout_find(ct);
79 timeouts = nf_ct_timeout_data(timeout_ext);
80 if (unlikely(!timeouts))
81 timeouts = l4proto->get_timeouts(net);
83 timeouts = l4proto->get_timeouts(net);
88 return l4proto->get_timeouts(net);
92 #ifdef CONFIG_NF_CONNTRACK_TIMEOUT
93 int nf_conntrack_timeout_init(void);
94 void nf_conntrack_timeout_fini(void);
96 static inline int nf_conntrack_timeout_init(void)
101 static inline void nf_conntrack_timeout_fini(void)
105 #endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
107 #ifdef CONFIG_NF_CONNTRACK_TIMEOUT
108 extern struct ctnl_timeout *(*nf_ct_timeout_find_get_hook)(struct net *net, const char *name);
109 extern void (*nf_ct_timeout_put_hook)(struct ctnl_timeout *timeout);
112 #endif /* _NF_CONNTRACK_TIMEOUT_H */