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Linux/include/net/netfilter/nf_conntrack_acct.h

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  1 /*
  2  * (C) 2008 Krzysztof Piotr Oledzki <ole@ans.pl>
  3  *
  4  * This program is free software; you can redistribute it and/or modify
  5  * it under the terms of the GNU General Public License version 2 as
  6  * published by the Free Software Foundation.
  7  */
  8 
  9 #ifndef _NF_CONNTRACK_ACCT_H
 10 #define _NF_CONNTRACK_ACCT_H
 11 #include <net/net_namespace.h>
 12 #include <linux/netfilter/nf_conntrack_common.h>
 13 #include <linux/netfilter/nf_conntrack_tuple_common.h>
 14 #include <net/netfilter/nf_conntrack.h>
 15 #include <net/netfilter/nf_conntrack_extend.h>
 16 
 17 struct nf_conn_counter {
 18         atomic64_t packets;
 19         atomic64_t bytes;
 20 };
 21 
 22 static inline
 23 struct nf_conn_counter *nf_conn_acct_find(const struct nf_conn *ct)
 24 {
 25         return nf_ct_ext_find(ct, NF_CT_EXT_ACCT);
 26 }
 27 
 28 static inline
 29 struct nf_conn_counter *nf_ct_acct_ext_add(struct nf_conn *ct, gfp_t gfp)
 30 {
 31         struct net *net = nf_ct_net(ct);
 32         struct nf_conn_counter *acct;
 33 
 34         if (!net->ct.sysctl_acct)
 35                 return NULL;
 36 
 37         acct = nf_ct_ext_add(ct, NF_CT_EXT_ACCT, gfp);
 38         if (!acct)
 39                 pr_debug("failed to add accounting extension area");
 40 
 41 
 42         return acct;
 43 };
 44 
 45 extern unsigned int
 46 seq_print_acct(struct seq_file *s, const struct nf_conn *ct, int dir);
 47 
 48 /* Check if connection tracking accounting is enabled */
 49 static inline bool nf_ct_acct_enabled(struct net *net)
 50 {
 51         return net->ct.sysctl_acct != 0;
 52 }
 53 
 54 /* Enable/disable connection tracking accounting */
 55 static inline void nf_ct_set_acct(struct net *net, bool enable)
 56 {
 57         net->ct.sysctl_acct = enable;
 58 }
 59 
 60 extern int nf_conntrack_acct_pernet_init(struct net *net);
 61 extern void nf_conntrack_acct_pernet_fini(struct net *net);
 62 
 63 extern int nf_conntrack_acct_init(void);
 64 extern void nf_conntrack_acct_fini(void);
 65 #endif /* _NF_CONNTRACK_ACCT_H */
 66 

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