[IPV4]: Add default config support after inetdev_init
Previously once inetdev_init has been called on a device any changes
made to ipv4_devconf_dflt would have no effect on that device's
configuration.
This creates a problem since we have moved the point where
inetdev_init is called from when an address is added to where the
device is registered.
This patch is the first half of a set that tries to mimic the old
behaviour while still calling inetdev_init.
It propagates any changes to ipv4_devconf_dflt to those devices that
have not had the corresponding attribute set.
The next patch will forcibly set all values at the point where
inetdev_init was previously called.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h
index 1ef174d..40adefd 100644
--- a/include/linux/inetdevice.h
+++ b/include/linux/inetdevice.h
@@ -3,6 +3,7 @@
#ifdef __KERNEL__
+#include <linux/bitmap.h>
#include <linux/if.h>
#include <linux/netdevice.h>
#include <linux/rcupdate.h>
@@ -12,6 +13,7 @@
{
void *sysctl;
int data[__NET_IPV4_CONF_MAX - 1];
+ DECLARE_BITMAP(state, __NET_IPV4_CONF_MAX - 1);
};
extern struct ipv4_devconf ipv4_devconf;
@@ -53,6 +55,7 @@
int val)
{
index--;
+ set_bit(index, in_dev->cnf.state);
in_dev->cnf.data[index] = val;
}
