netfilter: nf_tables: Eliminate duplicated code in nf_tables_table_enable()

If something fails in nf_tables_table_enable(), it unregisters the
chains. But the rollback code is the same as nf_tables_table_disable()
almostly, except there is one counter check.  Now create one wrapper
function to eliminate the duplicated codes.

Signed-off-by: Feng <fgao@ikuai8.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

path: root/timer.h

#ifndef TIMER_H
#define TIMER_H

#include <sys/time.h>

extern void set_itimer_interval_value(struct itimerval *itimer, unsigned long sec,
				      unsigned long usec);

extern int get_user_hz(void);

#endif /* TIMER_H */