/* SPDX-License-Identifier: GPL-2.0-only */
/*
* (C) 2008 Krzysztof Piotr Oledzki <[email protected]>
*/
#ifndef _NF_CONNTRACK_ACCT_H
#define _NF_CONNTRACK_ACCT_H
#include <net/net_namespace.h>
#include <linux/netfilter/nf_conntrack_common.h>
#include <linux/netfilter/nf_conntrack_tuple_common.h>
#include <net/netfilter/nf_conntrack.h>
#include <net/netfilter/nf_conntrack_extend.h>
struct nf_conn_counter {
atomic64_t packets;
atomic64_t bytes;
};
struct nf_conn_acct {
struct nf_conn_counter counter[IP_CT_DIR_MAX];
};
static inline
struct nf_conn_acct *nf_conn_acct_find(const struct nf_conn *ct)
{
return nf_ct_ext_find(ct, NF_CT_EXT_ACCT);
}
static inline
struct nf_conn_acct *nf_ct_acct_ext_add(struct nf_conn *ct, gfp_t gfp)
{
#if IS_ENABLED(CONFIG_NF_CONNTRACK)
struct net *net = nf_ct_net(ct);
struct nf_conn_acct *acct;
if (!net->ct.sysctl_acct)
return NULL;
acct = nf_ct_ext_add(ct, NF_CT_EXT_ACCT, gfp);
if (!acct)
pr_debug("failed to add accounting extension area");
return acct;
#else
return NULL;
#endif
}
/* Check if connection tracking accounting is enabled */
static inline bool nf_ct_acct_enabled(struct net *net)
{
#if IS_ENABLED(CONFIG_NF_CONNTRACK)
return net->ct.sysctl_acct != 0;
#else
return false;
#endif
}
/* Enable/disable connection tracking accounting */
static inline void nf_ct_set_acct(struct net *net, bool enable)
{
#if IS_ENABLED(CONFIG_NF_CONNTRACK)
net->ct.sysctl_acct = enable;
#endif
}
void nf_ct_acct_add(struct nf_conn *ct, u32 dir, unsigned int packets,
unsigned int bytes);
static inline void nf_ct_acct_update(struct nf_conn *ct, u32 dir,
unsigned int bytes)
{
#if IS_ENABLED(CONFIG_NF_CONNTRACK)
nf_ct_acct_add(ct, dir, 1, bytes);
#endif
}
void nf_conntrack_acct_pernet_init(struct net *net);
#endif /* _NF_CONNTRACK_ACCT_H */