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[IPV6]: Use ctl paths to register addrconf sysctls

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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>
This commit is contained in:
Pavel Emelyanov 2007-12-02 00:59:38 +11:00 committed by David S. Miller
parent f52295a9c5
commit 1dab62226d
1 changed files with 20 additions and 60 deletions
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80
net/ipv6/addrconf.c
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@ -3848,10 +3848,7 @@ static struct addrconf_sysctl_table
{
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 @@ static struct addrconf_sysctl_table
.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 @@ static void __addrconf_sysctl_register(char *dev_name, int ctl_name,
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 @@ static void __addrconf_sysctl_register(char *dev_name, int ctl_name,
* 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 @@ static void __addrconf_sysctl_register(char *dev_name, int ctl_name,
return;
free_procname:
kfree(dev_name);
kfree(t->dev_name);
free:
kfree(t);
out:
@ -4177,7 +4137,7 @@ static void addrconf_sysctl_unregister(struct ipv6_devconf *p)
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);
}
}