[NET]: Add proc_dointvec_userhz_jiffies, use it for proper handling of neighbour sysctls.

include/linux/sysctl.h

@@ -738,6 +738,8 @@ extern int proc_dointvec_minmax(ctl_table *, int, struct file *,
 				void __user *, size_t *);
 extern int proc_dointvec_jiffies(ctl_table *, int, struct file *,
 				 void __user *, size_t *);
+extern int proc_dointvec_userhz_jiffies(ctl_table *, int, struct file *,
+					void __user *, size_t *);
 extern int proc_doulongvec_minmax(ctl_table *, int, struct file *,
 				  void __user *, size_t *);
 extern int proc_doulongvec_ms_jiffies_minmax(ctl_table *table, int,

net/core/neighbour.c

@@ -24,6 +24,7 @@
 #ifdef CONFIG_SYSCTL
 #include <linux/sysctl.h>
 #endif
+#include <linux/times.h>
 #include <net/neighbour.h>
 #include <net/dst.h>
 #include <net/sock.h>
@@ -1510,7 +1511,7 @@ struct neigh_sysctl_table {
 			.procname	= "retrans_time",
 			.maxlen		= sizeof(int),
 			.mode		= 0644,
-			.proc_handler	= &proc_dointvec,
+			.proc_handler	= &proc_dointvec_userhz_jiffies,
 		},
 		{
 			.ctl_name	= NET_NEIGH_REACHABLE_TIME,
@@ -1555,21 +1556,21 @@ struct neigh_sysctl_table {
 			.procname	= "anycast_delay",
 			.maxlen		= sizeof(int),
 			.mode		= 0644,
-			.proc_handler	= &proc_dointvec,
+			.proc_handler	= &proc_dointvec_userhz_jiffies,
 		},
 		{
 			.ctl_name	= NET_NEIGH_PROXY_DELAY,
 			.procname	= "proxy_delay",
 			.maxlen		= sizeof(int),
 			.mode		= 0644,
-			.proc_handler	= &proc_dointvec,
+			.proc_handler	= &proc_dointvec_userhz_jiffies,
 		},
 		{
 			.ctl_name	= NET_NEIGH_LOCKTIME,
 			.procname	= "locktime",
 			.maxlen		= sizeof(int),
 			.mode		= 0644,
-			.proc_handler	= &proc_dointvec,
+			.proc_handler	= &proc_dointvec_userhz_jiffies,
 		},
 		{
 			.ctl_name	= NET_NEIGH_GC_INTERVAL,