1#ifndef _NF_CONNTRACK_TSTAMP_H
2#define _NF_CONNTRACK_TSTAMP_H
3
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 <net/netfilter/nf_conntrack.h>
8#include <net/netfilter/nf_conntrack_extend.h>
9
10struct nf_conn_tstamp {
11	u_int64_t start;
12	u_int64_t stop;
13};
14
15static inline
16struct nf_conn_tstamp *nf_conn_tstamp_find(const struct nf_conn *ct)
17{
18#ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
19	return nf_ct_ext_find(ct, NF_CT_EXT_TSTAMP);
20#else
21	return NULL;
22#endif
23}
24
25static inline
26struct nf_conn_tstamp *nf_ct_tstamp_ext_add(struct nf_conn *ct, gfp_t gfp)
27{
28#ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
29	struct net *net = nf_ct_net(ct);
30
31	if (!net->ct.sysctl_tstamp)
32		return NULL;
33
34	return nf_ct_ext_add(ct, NF_CT_EXT_TSTAMP, gfp);
35#else
36	return NULL;
37#endif
38};
39
40static inline bool nf_ct_tstamp_enabled(struct net *net)
41{
42	return net->ct.sysctl_tstamp != 0;
43}
44
45static inline void nf_ct_set_tstamp(struct net *net, bool enable)
46{
47	net->ct.sysctl_tstamp = enable;
48}
49
50#ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
51extern int nf_conntrack_tstamp_init(struct net *net);
52extern void nf_conntrack_tstamp_fini(struct net *net);
53#else
54static inline int nf_conntrack_tstamp_init(struct net *net)
55{
56	return 0;
57}
58
59static inline void nf_conntrack_tstamp_fini(struct net *net)
60{
61	return;
62}
63#endif /* CONFIG_NF_CONNTRACK_TIMESTAMP */
64
65#endif /* _NF_CONNTRACK_TSTAMP_H */
66