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OpenCloudOS-Kernel
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[NETNS]: Make the ctl-tables per-namespace 

This includes passing the net to __addrconf_sysctl_register
and saving this on the ctl_table->extra2 to be used in
handlers (those, needing it).

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov 2008-01-10 17:42:13 -08:00 committed by David S. Miller
parent 9589731220
commit bff16c2f99
1 changed files with 14 additions and 10 deletions
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24
net/ipv6/addrconf.c
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@ -456,13 +456,13 @@ static void dev_forward_change(struct inet6_dev *idev)
}
static void addrconf_forward_change(void)
static void addrconf_forward_change(struct net *net)
{
struct net_device *dev;
struct inet6_dev *idev;
read_lock(&dev_base_lock);
for_each_netdev(&init_net, dev) {
for_each_netdev(net, dev) {
rcu_read_lock();
idev = __in6_dev_get(dev);
if (idev) {
@ -478,12 +478,15 @@ static void addrconf_forward_change(void)
static void addrconf_fixup_forwarding(struct ctl_table *table, int *p, int old)
{
struct net *net;
net = (struct net *)table->extra2;
if (p == &ipv6_devconf_dflt.forwarding)
return;
if (p == &ipv6_devconf.forwarding) {
ipv6_devconf_dflt.forwarding = ipv6_devconf.forwarding;
addrconf_forward_change();
addrconf_forward_change(net);
} else if ((!*p) ^ (!old))
dev_forward_change((struct inet6_dev *)table->extra1);
@ -4044,8 +4047,8 @@ static struct addrconf_sysctl_table
},
};
static int __addrconf_sysctl_register(char *dev_name, int ctl_name,
struct inet6_dev *idev, struct ipv6_devconf *p)
static int __addrconf_sysctl_register(struct net *net, char *dev_name,
int ctl_name, struct inet6_dev *idev, struct ipv6_devconf *p)
{
int i;
struct addrconf_sysctl_table *t;
@ -4068,6 +4071,7 @@ static int __addrconf_sysctl_register(char *dev_name, int ctl_name,
for (i=0; t->addrconf_vars[i].data; i++) {
t->addrconf_vars[i].data += (char*)p - (char*)&ipv6_devconf;
t->addrconf_vars[i].extra1 = idev; /* embedded; no ref */
t->addrconf_vars[i].extra2 = net;
}
/*
@ -4082,7 +4086,7 @@ static int __addrconf_sysctl_register(char *dev_name, int ctl_name,
addrconf_ctl_path[ADDRCONF_CTL_PATH_DEV].procname = t->dev_name;
addrconf_ctl_path[ADDRCONF_CTL_PATH_DEV].ctl_name = ctl_name;
t->sysctl_header = register_sysctl_paths(addrconf_ctl_path,
t->sysctl_header = register_net_sysctl_table(net, addrconf_ctl_path,
t->addrconf_vars);
if (t->sysctl_header == NULL)
goto free_procname;
@ -4118,8 +4122,8 @@ static void addrconf_sysctl_register(struct inet6_dev *idev)
NET_IPV6_NEIGH, "ipv6",
&ndisc_ifinfo_sysctl_change,
NULL);
__addrconf_sysctl_register(idev->dev->name, idev->dev->ifindex,
idev, &idev->cnf);
__addrconf_sysctl_register(idev->dev->nd_net, idev->dev->name,
idev->dev->ifindex, idev, &idev->cnf);
}
static void addrconf_sysctl_unregister(struct inet6_dev *idev)
@ -4215,9 +4219,9 @@ int __init addrconf_init(void)
ipv6_addr_label_rtnl_register();
#ifdef CONFIG_SYSCTL
__addrconf_sysctl_register("all", NET_PROTO_CONF_ALL,
__addrconf_sysctl_register(&init_net, "all", NET_PROTO_CONF_ALL,
NULL, &ipv6_devconf);
__addrconf_sysctl_register("default", NET_PROTO_CONF_DEFAULT,
__addrconf_sysctl_register(&init_net, "default", NET_PROTO_CONF_DEFAULT,
NULL, &ipv6_devconf_dflt);
#endif