root/include/net/netfilter/nf_conntrack_acct.h

INCLUDED FROM

DEFINITIONS

1. nf_conn_acct_find
2. nf_ct_acct_ext_add
3. nf_ct_acct_enabled
4. nf_ct_set_acct

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * (C) 2008 Krzysztof Piotr Oledzki <ole@ans.pl>
   4  */
   5 
   6 #ifndef _NF_CONNTRACK_ACCT_H
   7 #define _NF_CONNTRACK_ACCT_H
   8 #include <net/net_namespace.h>
   9 #include <linux/netfilter/nf_conntrack_common.h>
  10 #include <linux/netfilter/nf_conntrack_tuple_common.h>
  11 #include <net/netfilter/nf_conntrack.h>
  12 #include <net/netfilter/nf_conntrack_extend.h>
  13 
  14 struct nf_conn_counter {
  15         atomic64_t packets;
  16         atomic64_t bytes;
  17 };
  18 
  19 struct nf_conn_acct {
  20         struct nf_conn_counter counter[IP_CT_DIR_MAX];
  21 };
  22 
  23 static inline
  24 struct nf_conn_acct *nf_conn_acct_find(const struct nf_conn *ct)
  25 {
  26         return nf_ct_ext_find(ct, NF_CT_EXT_ACCT);
  27 }
  28 
  29 static inline
  30 struct nf_conn_acct *nf_ct_acct_ext_add(struct nf_conn *ct, gfp_t gfp)
  31 {
  32 #if IS_ENABLED(CONFIG_NF_CONNTRACK)
  33         struct net *net = nf_ct_net(ct);
  34         struct nf_conn_acct *acct;
  35 
  36         if (!net->ct.sysctl_acct)
  37                 return NULL;
  38 
  39         acct = nf_ct_ext_add(ct, NF_CT_EXT_ACCT, gfp);
  40         if (!acct)
  41                 pr_debug("failed to add accounting extension area");
  42 
  43 
  44         return acct;
  45 #else
  46         return NULL;
  47 #endif
  48 }
  49 
  50 /* Check if connection tracking accounting is enabled */
  51 static inline bool nf_ct_acct_enabled(struct net *net)
  52 {
  53 #if IS_ENABLED(CONFIG_NF_CONNTRACK)
  54         return net->ct.sysctl_acct != 0;
  55 #else
  56         return false;
  57 #endif
  58 }
  59 
  60 /* Enable/disable connection tracking accounting */
  61 static inline void nf_ct_set_acct(struct net *net, bool enable)
  62 {
  63 #if IS_ENABLED(CONFIG_NF_CONNTRACK)
  64         net->ct.sysctl_acct = enable;
  65 #endif
  66 }
  67 
  68 void nf_conntrack_acct_pernet_init(struct net *net);
  69 
  70 int nf_conntrack_acct_init(void);
  71 void nf_conntrack_acct_fini(void);
  72 
  73 #endif /* _NF_CONNTRACK_ACCT_H */