LXR linux/include/net/netfilter/nf_conntrack

   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