1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _NF_CONNTRACK_TIMEOUT_H
3 #define _NF_CONNTRACK_TIMEOUT_H
5 #include <net/net_namespace.h>
6 #include <linux/netfilter/nf_conntrack_common.h>
7 #include <linux/netfilter/nf_conntrack_tuple_common.h>
8 #include <linux/refcount.h>
9 #include <net/netfilter/nf_conntrack.h>
10 #include <net/netfilter/nf_conntrack_extend.h>
12 #define CTNL_TIMEOUT_NAME_MAX 32
14 struct nf_ct_timeout {
16 const struct nf_conntrack_l4proto *l4proto;
20 struct nf_conn_timeout {
21 struct nf_ct_timeout __rcu *timeout;
24 static inline unsigned int *
25 nf_ct_timeout_data(const struct nf_conn_timeout *t)
27 #ifdef CONFIG_NF_CONNTRACK_TIMEOUT
28 struct nf_ct_timeout *timeout;
30 timeout = rcu_dereference(t->timeout);
34 return (unsigned int *)timeout->data;
41 struct nf_conn_timeout *nf_ct_timeout_find(const struct nf_conn *ct)
43 #ifdef CONFIG_NF_CONNTRACK_TIMEOUT
44 return nf_ct_ext_find(ct, NF_CT_EXT_TIMEOUT);
51 struct nf_conn_timeout *nf_ct_timeout_ext_add(struct nf_conn *ct,
52 struct nf_ct_timeout *timeout,
55 #ifdef CONFIG_NF_CONNTRACK_TIMEOUT
56 struct nf_conn_timeout *timeout_ext;
58 timeout_ext = nf_ct_ext_add(ct, NF_CT_EXT_TIMEOUT, gfp);
59 if (timeout_ext == NULL)
62 rcu_assign_pointer(timeout_ext->timeout, timeout);
70 static inline unsigned int *nf_ct_timeout_lookup(const struct nf_conn *ct)
72 unsigned int *timeouts = NULL;
73 #ifdef CONFIG_NF_CONNTRACK_TIMEOUT
74 struct nf_conn_timeout *timeout_ext;
76 timeout_ext = nf_ct_timeout_find(ct);
78 timeouts = nf_ct_timeout_data(timeout_ext);
83 #ifdef CONFIG_NF_CONNTRACK_TIMEOUT
84 void nf_ct_untimeout(struct net *net, struct nf_ct_timeout *timeout);
85 int nf_ct_set_timeout(struct net *net, struct nf_conn *ct, u8 l3num, u8 l4num,
86 const char *timeout_name);
87 void nf_ct_destroy_timeout(struct nf_conn *ct);
89 static inline int nf_ct_set_timeout(struct net *net, struct nf_conn *ct,
91 const char *timeout_name)
96 static inline void nf_ct_destroy_timeout(struct nf_conn *ct)
100 #endif /* CONFIG_NF_CONNTRACK_TIMEOUT */
102 #ifdef CONFIG_NF_CONNTRACK_TIMEOUT
103 struct nf_ct_timeout_hooks {
104 struct nf_ct_timeout *(*timeout_find_get)(struct net *net, const char *name);
105 void (*timeout_put)(struct nf_ct_timeout *timeout);
108 extern const struct nf_ct_timeout_hooks __rcu *nf_ct_timeout_hook;
111 #endif /* _NF_CONNTRACK_TIMEOUT_H */