[IPV6]: Use ctl paths to register addrconf sysctls
This looks very much like the patch for ipv4's devinet.
This is also intended to help us with the net namespaces
and saves the ipv6.ko size by ~320 bytes.
The difference from the first version is just the patch
offsets, that changed due to changes in the patch #2.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index ea1673d..dbff389 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -3848,10 +3848,7 @@
{
struct ctl_table_header *sysctl_header;
ctl_table addrconf_vars[__NET_IPV6_MAX];
- ctl_table addrconf_dev[2];
- ctl_table addrconf_conf_dir[2];
- ctl_table addrconf_proto_dir[2];
- ctl_table addrconf_root_dir[2];
+ char *dev_name;
} addrconf_sysctl __read_mostly = {
.sysctl_header = NULL,
.addrconf_vars = {
@@ -4072,50 +4069,6 @@
.ctl_name = 0, /* sentinel */
}
},
- .addrconf_dev = {
- {
- .ctl_name = NET_PROTO_CONF_ALL,
- .procname = "all",
- .mode = 0555,
- .child = addrconf_sysctl.addrconf_vars,
- },
- {
- .ctl_name = 0, /* sentinel */
- }
- },
- .addrconf_conf_dir = {
- {
- .ctl_name = NET_IPV6_CONF,
- .procname = "conf",
- .mode = 0555,
- .child = addrconf_sysctl.addrconf_dev,
- },
- {
- .ctl_name = 0, /* sentinel */
- }
- },
- .addrconf_proto_dir = {
- {
- .ctl_name = NET_IPV6,
- .procname = "ipv6",
- .mode = 0555,
- .child = addrconf_sysctl.addrconf_conf_dir,
- },
- {
- .ctl_name = 0, /* sentinel */
- }
- },
- .addrconf_root_dir = {
- {
- .ctl_name = CTL_NET,
- .procname = "net",
- .mode = 0555,
- .child = addrconf_sysctl.addrconf_proto_dir,
- },
- {
- .ctl_name = 0, /* sentinel */
- }
- },
};
static void __addrconf_sysctl_register(char *dev_name, int ctl_name,
@@ -4124,6 +4077,17 @@
int i;
struct addrconf_sysctl_table *t;
+#define ADDRCONF_CTL_PATH_DEV 3
+
+ struct ctl_path addrconf_ctl_path[] = {
+ { .procname = "net", .ctl_name = CTL_NET, },
+ { .procname = "ipv6", .ctl_name = NET_IPV6, },
+ { .procname = "conf", .ctl_name = NET_IPV6_CONF, },
+ { /* to be set */ },
+ { },
+ };
+
+
t = kmemdup(&addrconf_sysctl, sizeof(*t), GFP_KERNEL);
if (t == NULL)
goto out;
@@ -4138,19 +4102,15 @@
* by sysctl and we wouldn't want anyone to change it under our feet
* (see SIOCSIFNAME).
*/
- dev_name = kstrdup(dev_name, GFP_KERNEL);
- if (!dev_name)
+ t->dev_name = kstrdup(dev_name, GFP_KERNEL);
+ if (!t->dev_name)
goto free;
- t->addrconf_dev[0].ctl_name = ctl_name;
- t->addrconf_dev[0].procname = dev_name;
+ addrconf_ctl_path[ADDRCONF_CTL_PATH_DEV].procname = t->dev_name;
+ addrconf_ctl_path[ADDRCONF_CTL_PATH_DEV].ctl_name = ctl_name;
- t->addrconf_dev[0].child = t->addrconf_vars;
- t->addrconf_conf_dir[0].child = t->addrconf_dev;
- t->addrconf_proto_dir[0].child = t->addrconf_conf_dir;
- t->addrconf_root_dir[0].child = t->addrconf_proto_dir;
-
- t->sysctl_header = register_sysctl_table(t->addrconf_root_dir);
+ t->sysctl_header = register_sysctl_paths(addrconf_ctl_path,
+ t->addrconf_vars);
if (t->sysctl_header == NULL)
goto free_procname;
@@ -4158,7 +4118,7 @@
return;
free_procname:
- kfree(dev_name);
+ kfree(t->dev_name);
free:
kfree(t);
out:
@@ -4177,7 +4137,7 @@
struct addrconf_sysctl_table *t = p->sysctl;
p->sysctl = NULL;
unregister_sysctl_table(t->sysctl_header);
- kfree(t->addrconf_dev[0].procname);
+ kfree(t->dev_name);
kfree(t);
}
}