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[IPV4]: Add default config support after inetdev_init

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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>
This commit is contained in:
Herbert Xu 2007-06-04 23:35:37 -07:00 • committed by David S. Miller
parent 42f811b8bc
commit 31be308541
2 changed files with 101 additions and 35 deletions
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3
include/linux/inetdevice.h
View file

@ -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 @@ struct ipv4_devconf
{
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 @@ static inline void ipv4_devconf_set(struct in_device *in_dev, int index,
int val)
{
index--;
set_bit(index, in_dev->cnf.state);
in_dev->cnf.data[index] = val;
}