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 17struct nf_conn_counter { 18 u_int64_t packets; 19 u_int64_t bytes; 20}; 21 22static inline 23struct 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 28static inline 29struct 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 45extern unsigned int 46seq_print_acct(struct seq_file *s, const struct nf_conn *ct, int dir); 47 48/* Check if connection tracking accounting is enabled */ 49static 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 */ 55static inline void nf_ct_set_acct(struct net *net, bool enable) 56{ 57 net->ct.sysctl_acct = enable; 58} 59 60extern int nf_conntrack_acct_init(struct net *net); 61extern void nf_conntrack_acct_fini(struct net *net); 62 63#endif /* _NF_CONNTRACK_ACCT_H */ 64