LXR linux/include/net/netfilter/nf_conntrack

   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
  48extern int nf_conntrack_acct_init(struct net *net);
  49extern void nf_conntrack_acct_fini(struct net *net);
  50
  51#endif /* _NF_CONNTRACK_ACCT_H */
  52