include/linux/netfilter/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/atomic.h>
   6 #include <uapi/linux/netfilter/nf_conntrack_common.h>
   7
   8 struct 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
  27 struct nf_conntrack {
  28         atomic_t use;
  29 };
  30
  31 void nf_conntrack_destroy(struct nf_conntrack *nfct);
  32 static inline void nf_conntrack_put(struct nf_conntrack *nfct)
  33 {
  34         if (nfct && atomic_dec_and_test(&nfct->use))
  35                 nf_conntrack_destroy(nfct);
  36 }
  37 static inline void nf_conntrack_get(struct nf_conntrack *nfct)
  38 {
  39         if (nfct)
  40                 atomic_inc(&nfct->use);
  41 }
  42
  43 #endif /* _NF_CONNTRACK_COMMON_H */