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authorPavel Emelyanov <xemul@openvz.org>2007-12-05 01:44:58 -0800
committerDavid S. Miller <davem@davemloft.net>2008-01-28 14:56:31 -0800
commit68dd299bc84dede6aef32e6f4777a676314f5d21 (patch)
tree665132d14a68b3d5676b3fc87424c8be79c28487 /net/ipv4/devinet.c
parent4d43b78ac27ca50fe42718192ac7c80474417389 (diff)
[INET]: Merge sys.net.ipv4.ip_forward and sys.net.ipv4.conf.all.forwarding
AFAIS these two entries should do the same thing - change the forwarding state on ipv4_devconf and on all the devices. I propose to merge the handlers together using ctl paths. The inet_forward_change() is static after this and I move it higher to be closer to other "propagation" helpers and to avoid diff making patches based on { and } matching :) i.e. - make them easier to read. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/devinet.c')
-rw-r--r--net/ipv4/devinet.c66
1 files changed, 44 insertions, 22 deletions
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 9e2747aab25..d1dc0150647 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -1263,6 +1263,28 @@ static void devinet_copy_dflt_conf(int i)
read_unlock(&dev_base_lock);
}
+static void inet_forward_change(void)
+{
+ struct net_device *dev;
+ int on = IPV4_DEVCONF_ALL(FORWARDING);
+
+ IPV4_DEVCONF_ALL(ACCEPT_REDIRECTS) = !on;
+ IPV4_DEVCONF_DFLT(FORWARDING) = on;
+
+ read_lock(&dev_base_lock);
+ for_each_netdev(&init_net, dev) {
+ struct in_device *in_dev;
+ rcu_read_lock();
+ in_dev = __in_dev_get_rcu(dev);
+ if (in_dev)
+ IN_DEV_CONF_SET(in_dev, FORWARDING, on);
+ rcu_read_unlock();
+ }
+ read_unlock(&dev_base_lock);
+
+ rt_cache_flush(0);
+}
+
static int devinet_conf_proc(ctl_table *ctl, int write,
struct file* filp, void __user *buffer,
size_t *lenp, loff_t *ppos)
@@ -1332,28 +1354,6 @@ static int devinet_conf_sysctl(ctl_table *table, int __user *name, int nlen,
return 1;
}
-void inet_forward_change(void)
-{
- struct net_device *dev;
- int on = IPV4_DEVCONF_ALL(FORWARDING);
-
- IPV4_DEVCONF_ALL(ACCEPT_REDIRECTS) = !on;
- IPV4_DEVCONF_DFLT(FORWARDING) = on;
-
- read_lock(&dev_base_lock);
- for_each_netdev(&init_net, dev) {
- struct in_device *in_dev;
- rcu_read_lock();
- in_dev = __in_dev_get_rcu(dev);
- if (in_dev)
- IN_DEV_CONF_SET(in_dev, FORWARDING, on);
- rcu_read_unlock();
- }
- read_unlock(&dev_base_lock);
-
- rt_cache_flush(0);
-}
-
static int devinet_sysctl_forward(ctl_table *ctl, int write,
struct file* filp, void __user *buffer,
size_t *lenp, loff_t *ppos)
@@ -1536,6 +1536,27 @@ static void devinet_sysctl_unregister(struct ipv4_devconf *p)
}
#endif
+static struct ctl_table ctl_forward_entry[] = {
+ {
+ .ctl_name = NET_IPV4_FORWARD,
+ .procname = "ip_forward",
+ .data = &ipv4_devconf.data[
+ NET_IPV4_CONF_FORWARDING - 1],
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = devinet_sysctl_forward,
+ .strategy = devinet_conf_sysctl,
+ .extra1 = &ipv4_devconf,
+ },
+ { },
+};
+
+static __initdata struct ctl_path net_ipv4_path[] = {
+ { .procname = "net", .ctl_name = CTL_NET, },
+ { .procname = "ipv4", .ctl_name = NET_IPV4, },
+ { },
+};
+
void __init devinet_init(void)
{
register_gifconf(PF_INET, inet_gifconf);
@@ -1549,6 +1570,7 @@ void __init devinet_init(void)
&ipv4_devconf);
__devinet_sysctl_register("default", NET_PROTO_CONF_DEFAULT,
&ipv4_devconf_dflt);
+ register_sysctl_paths(net_ipv4_path, ctl_forward_entry);
#endif
}