[DECNET]: Switch to using ctl_paths.

The decnet includes two places to patch. The first one is
the net/decnet table itself, and it is patched just like
other subsystems in the first patch in this series.

The second place is a bit more complex - it is the
net/decnet/conf/xxx entries,. similar to those in
ipv4/devinet.c and ipv6/addrconf.c. This code is made similar
to those in ipv[46].

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 20 insertions, 55 deletions

diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c
index 39c89c682047..1bbfce5f7a2d 100644
--- a/net/decnet/dn_dev.c
+++ b/net/decnet/dn_dev.c
@@ -173,10 +173,6 @@ static int dn_forwarding_sysctl(ctl_table *table, int __user *name, int nlen,
 static struct dn_dev_sysctl_table {
         struct ctl_table_header *sysctl_header;
         ctl_table dn_dev_vars[5];
-        ctl_table dn_dev_dev[2];
-        ctl_table dn_dev_conf_dir[2];
-        ctl_table dn_dev_proto_dir[2];
-        ctl_table dn_dev_root_dir[2];
 } dn_dev_sysctl = {
         NULL,
         {
@@ -224,30 +220,6 @@ static struct dn_dev_sysctl_table {
         },
         {0}
         },
-        {{
-                .ctl_name = 0,
-                .procname = "",
-                .mode = 0555,
-                .child = dn_dev_sysctl.dn_dev_vars
-        }, {0}},
-        {{
-                .ctl_name = NET_DECNET_CONF,
-                .procname = "conf",
-                .mode = 0555,
-                .child = dn_dev_sysctl.dn_dev_dev
-        }, {0}},
-        {{
-                .ctl_name = NET_DECNET,
-                .procname = "decnet",
-                .mode = 0555,
-                .child = dn_dev_sysctl.dn_dev_conf_dir
-        }, {0}},
-        {{
-                .ctl_name = CTL_NET,
-                .procname = "net",
-                .mode = 0555,
-                .child = dn_dev_sysctl.dn_dev_proto_dir
-        }, {0}}
 };
 
 static void dn_dev_sysctl_register(struct net_device *dev, struct dn_dev_parms *parms)
@@ -255,6 +227,16 @@ static void dn_dev_sysctl_register(struct net_device *dev, struct dn_dev_parms *
         struct dn_dev_sysctl_table *t;
         int i;
 
+#define DN_CTL_PATH_DEV 3
+
+        struct ctl_path dn_ctl_path[] = {
+                { .procname = "net", .ctl_name = CTL_NET, },
+                { .procname = "decnet", .ctl_name = NET_DECNET, },
+                { .procname = "conf", .ctl_name = NET_DECNET_CONF, },
+                { /* to be set */ },
+                { },
+        };
+
         t = kmemdup(&dn_dev_sysctl, sizeof(*t), GFP_KERNEL);
         if (t == NULL)
                 return;
@@ -265,20 +247,16 @@ static void dn_dev_sysctl_register(struct net_device *dev, struct dn_dev_parms *
         }
 
         if (dev) {
-                t->dn_dev_dev[0].procname = dev->name;
-                t->dn_dev_dev[0].ctl_name = dev->ifindex;
+                dn_ctl_path[DN_CTL_PATH_DEV].procname = dev->name;
+                dn_ctl_path[DN_CTL_PATH_DEV].ctl_name = dev->ifindex;
         } else {
-                t->dn_dev_dev[0].procname = parms->name;
-                t->dn_dev_dev[0].ctl_name = parms->ctl_name;
+                dn_ctl_path[DN_CTL_PATH_DEV].procname = parms->name;
+                dn_ctl_path[DN_CTL_PATH_DEV].ctl_name = parms->ctl_name;
         }
 
-        t->dn_dev_dev[0].child = t->dn_dev_vars;
-        t->dn_dev_conf_dir[0].child = t->dn_dev_dev;
-        t->dn_dev_proto_dir[0].child = t->dn_dev_conf_dir;
-        t->dn_dev_root_dir[0].child = t->dn_dev_proto_dir;
         t->dn_dev_vars[0].extra1 = (void *)dev;
 
-        t->sysctl_header = register_sysctl_table(t->dn_dev_root_dir);
+        t->sysctl_header = register_sysctl_paths(dn_ctl_path, t->dn_dev_vars);
         if (t->sysctl_header == NULL)
                 kfree(t);
         else
diff --git a/net/decnet/sysctl_net_decnet.c b/net/decnet/sysctl_net_decnet.c
index ae354a43fb97..228067c571ba 100644
--- a/net/decnet/sysctl_net_decnet.c
+++ b/net/decnet/sysctl_net_decnet.c
@@ -470,28 +470,15 @@ static ctl_table dn_table[] = {
         {0}
 };
 
-static ctl_table dn_dir_table[] = {
-        {
-                .ctl_name = NET_DECNET,
-                .procname = "decnet",
-                .mode = 0555,
-                .child = dn_table},
-        {0}
-};
-
-static ctl_table dn_root_table[] = {
-        {
-                .ctl_name = CTL_NET,
-                .procname = "net",
-                .mode = 0555,
-                .child = dn_dir_table
-        },
-        {0}
+static struct ctl_path dn_path[] = {
+        { .procname = "net", .ctl_name = CTL_NET, },
+        { .procname = "decnet", .ctl_name = NET_DECNET, },
+        { }
 };
 
 void dn_register_sysctl(void)
 {
-        dn_table_header = register_sysctl_table(dn_root_table);
+        dn_table_header = register_sysctl_paths(dn_path, dn_table);
 }
 
 void dn_unregister_sysctl(void)