nf_conntrack_common.h

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _NF_CONNTRACK_COMMON_H
 3#define _NF_CONNTRACK_COMMON_H
 4
 5#include <linux/refcount.h>
 6#include <uapi/linux/netfilter/nf_conntrack_common.h>
 7
 8struct ip_conntrack_stat {
 9	unsigned int found;
10	unsigned int invalid;
11	unsigned int insert;
12	unsigned int insert_failed;
13	unsigned int clash_resolve;
14	unsigned int drop;
15	unsigned int early_drop;
16	unsigned int error;
17	unsigned int expect_new;
18	unsigned int expect_create;
19	unsigned int expect_delete;
20	unsigned int search_restart;
21	unsigned int chaintoolong;
22};
23
24#define NFCT_INFOMASK	7UL
25#define NFCT_PTRMASK	~(NFCT_INFOMASK)
26
27struct nf_conntrack {
28	refcount_t use;
29};
30
31void nf_conntrack_destroy(struct nf_conntrack *nfct);
32
33/* like nf_ct_put, but without module dependency on nf_conntrack */
34static inline void nf_conntrack_put(struct nf_conntrack *nfct)
35{
36	if (nfct && refcount_dec_and_test(&nfct->use))
37		nf_conntrack_destroy(nfct);
38}
39static inline void nf_conntrack_get(struct nf_conntrack *nfct)
40{
41	if (nfct)
42		refcount_inc(&nfct->use);
43}
44
45#endif /* _NF_CONNTRACK_COMMON_H */