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OpenCloudOS-Kernel
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[IPV6]: Unify and cleanup calls to addrconf_sysctl_register 

Currently this call is (ab)used similar to devinet one - it
registers sysctls for devices and for the "default" confs, while
the "all" sysctls are registered separately. But unlike its
devinet brother, the passed inet6_device is needed.

The fix is to make a __addrconf_sysctl_register(), which registers
sysctls for all "devices" we need, including "default" and "all" :)

The original addrconf_sysctl_register() calls the introduced
function, passing the inet6_device, device name and ifindex (to
be used as procname and ctl_name) into it.

Thanks to Herbert again for pointing out, that we can shrink the
argument list to 1 :)

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 00:58:37 +11:00 committed by David S. Miller
parent bfada697bd
commit f52295a9c5
1 changed files with 16 additions and 16 deletions
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32
net/ipv6/addrconf.c
View File

@ -101,7 +101,7 @@
#define TIME_DELTA(a,b) ((unsigned long)((long)(a) - (long)(b)))
#ifdef CONFIG_SYSCTL
static void addrconf_sysctl_register(struct inet6_dev *idev, struct ipv6_devconf *p);
static void addrconf_sysctl_register(struct inet6_dev *idev);
static void addrconf_sysctl_unregister(struct ipv6_devconf *p);
#endif
@ -400,7 +400,7 @@ static struct inet6_dev * ipv6_add_dev(struct net_device *dev)
NET_IPV6_NEIGH, "ipv6",
&ndisc_ifinfo_sysctl_change,
NULL);
addrconf_sysctl_register(ndev, &ndev->cnf);
addrconf_sysctl_register(ndev);
#endif
/* protected by rtnl_lock */
rcu_assign_pointer(dev->ip6_ptr, ndev);
@ -2386,7 +2386,7 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
NET_IPV6, NET_IPV6_NEIGH, "ipv6",
&ndisc_ifinfo_sysctl_change,
NULL);
addrconf_sysctl_register(idev, &idev->cnf);
addrconf_sysctl_register(idev);
#endif
err = snmp6_register_dev(idev);
if (err)
@ -4118,12 +4118,11 @@ static struct addrconf_sysctl_table
},
};
static void addrconf_sysctl_register(struct inet6_dev *idev, struct ipv6_devconf *p)
static void __addrconf_sysctl_register(char *dev_name, int ctl_name,
struct inet6_dev *idev, struct ipv6_devconf *p)
{
int i;
struct net_device *dev = idev ? idev->dev : NULL;
struct addrconf_sysctl_table *t;
char *dev_name = NULL;
t = kmemdup(&addrconf_sysctl, sizeof(*t), GFP_KERNEL);
if (t == NULL)
@ -4133,13 +4132,6 @@ static void addrconf_sysctl_register(struct inet6_dev *idev, struct ipv6_devconf
t->addrconf_vars[i].data += (char*)p - (char*)&ipv6_devconf;
t->addrconf_vars[i].extra1 = idev; /* embedded; no ref */
}
if (dev) {
dev_name = dev->name;
t->addrconf_dev[0].ctl_name = dev->ifindex;
} else {
dev_name = "default";
t->addrconf_dev[0].ctl_name = NET_PROTO_CONF_DEFAULT;
}
/*
* Make a copy of dev_name, because '.procname' is regarded as const
@ -4150,6 +4142,7 @@ static void addrconf_sysctl_register(struct inet6_dev *idev, struct ipv6_devconf
if (!dev_name)
goto free;
t->addrconf_dev[0].ctl_name = ctl_name;
t->addrconf_dev[0].procname = dev_name;
t->addrconf_dev[0].child = t->addrconf_vars;
@ -4172,6 +4165,12 @@ out:
return;
}
static void addrconf_sysctl_register(struct inet6_dev *idev)
{
__addrconf_sysctl_register(idev->dev->name, idev->dev->ifindex,
idev, &idev->cnf);
}
static void addrconf_sysctl_unregister(struct ipv6_devconf *p)
{
if (p->sysctl) {
@ -4270,9 +4269,10 @@ int __init addrconf_init(void)
ipv6_addr_label_rtnl_register();
#ifdef CONFIG_SYSCTL
addrconf_sysctl.sysctl_header =
register_sysctl_table(addrconf_sysctl.addrconf_root_dir);
addrconf_sysctl_register(NULL, &ipv6_devconf_dflt);
__addrconf_sysctl_register("all", NET_PROTO_CONF_ALL,
NULL, &ipv6_devconf);
__addrconf_sysctl_register("default", NET_PROTO_CONF_DEFAULT,
NULL, &ipv6_devconf_dflt);
#endif
return 0;