extern int nf_conntrack_set_hashsize(const char *val, struct kernel_param *kp);
extern unsigned int nf_conntrack_htable_size;
extern int nf_conntrack_checksum;
-extern atomic_t nf_conntrack_count;
extern int nf_conntrack_max;
DECLARE_PER_CPU(struct ip_conntrack_stat, nf_conntrack_stat);