From 68dd299bc84dede6aef32e6f4777a676314f5d21 Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Wed, 5 Dec 2007 01:44:58 -0800 Subject: [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 Signed-off-by: David S. Miller --- net/ipv4/devinet.c | 66 ++++++++++++++++++++++++++++++++++++------------------ 1 file changed, 44 insertions(+), 22 deletions(-) (limited to 'net/ipv4/devinet.c') diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index 9e2747aab252..d1dc0150647d 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 } -- cgit v1.2.3