The age field of the ipv6 route structures are initilized with the current timeval at the time of route

creation. When the route dump is called the route age value stored in the structure is subtracted from the

present timeval and the difference is passed on as the route age.
Signed-off-by: Varun Chandramohan <varunc@linux.vnet.ibm.com>

---

 include/net/ip6_fib.h   |    1 +

 include/net/ip6_route.h |    3 +++

 net/ipv6/addrconf.c     |    5 +++++

 net/ipv6/route.c        |   24 ++++++++++++++++++++----

 4 files changed, 29 insertions(+), 4 deletions(-)
diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h

index c48ea87..e30a1cf 100644

--- a/include/net/ip6_fib.h

+++ b/include/net/ip6_fib.h

@@ -98,6 +98,7 @@ struct rt6_info
 	u32				rt6i_flags;

 	u32				rt6i_metric;

+	time_t				rt6i_age;

 	atomic_t			rt6i_ref;

 	struct fib6_table		*rt6i_table;
diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h

index 5456fdd..fc9716c 100644

--- a/include/net/ip6_route.h

+++ b/include/net/ip6_route.h

@@ -36,6 +36,9 @@ struct route_info {

 #define RT6_LOOKUP_F_REACHABLE	0x2

 #define RT6_LOOKUP_F_HAS_SADDR	0x4
+#define RT6_SET_ROUTE_INFO 0x0

+#define RT6_GET_ROUTE_INFO 0x1

+

 extern struct rt6_info	ip6_null_entry;
 #ifdef CONFIG_IPV6_MULTIPLE_TABLES

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c

index 91ef3be..666ec28 100644

--- a/net/ipv6/addrconf.c

+++ b/net/ipv6/addrconf.c

@@ -4182,6 +4182,7 @@ EXPORT_SYMBOL(unregister_inet6addr_notif
 int __init addrconf_init(void)

 {

+	struct timeval tv;

 	int err = 0;
 	/* The addrconf netdev notifier requires that loopback_dev

@@ -4209,10 +4210,14 @@ int __init addrconf_init(void)

 	if (err)

 		return err;
+	do_gettimeofday(&tv);

 	ip6_null_entry.rt6i_idev = in6_dev_get(&loopback_dev);

+	ip6_null_entry.rt6i_age = timeval_to_sec(&tv);

 #ifdef CONFIG_IPV6_MULTIPLE_TABLES

 	ip6_prohibit_entry.rt6i_idev = in6_dev_get(&loopback_dev);

+	ip6_prohibit_entry.rt6i_age = timeval_to_se...
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