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[IPV4]: Primary and secondary addresses

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Add an option to make secondary IP addresses get promoted
when primary IP addresses are removed from the device.
It defaults to off to preserve existing behavior.

Signed-off-by: Harald Welte <laforge@gnumonks.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Harald Welte 2005-05-29 20:23:46 -07:00 • committed by David S. Miller
parent 79158229b0
commit 8f937c6099
3 changed files with 32 additions and 5 deletions
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2
include/linux/inetdevice.h
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@ -29,6 +29,7 @@ struct ipv4_devconf
int no_xfrm;
int no_policy;
int force_igmp_version;
int promote_secondaries;
void *sysctl;
};
@ -71,6 +72,7 @@ struct in_device
#define IN_DEV_SEC_REDIRECTS(in_dev) (ipv4_devconf.secure_redirects || (in_dev)->cnf.secure_redirects)
#define IN_DEV_IDTAG(in_dev) ((in_dev)->cnf.tag)
#define IN_DEV_MEDIUM_ID(in_dev) ((in_dev)->cnf.medium_id)
#define IN_DEV_PROMOTE_SECONDARIES(in_dev) (ipv4_devconf.promote_secondaries || (in_dev)->cnf.promote_secondaries)
#define IN_DEV_RX_REDIRECTS(in_dev) \
((IN_DEV_FORWARD(in_dev) && \