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ipv6 route: Fix route lifetime in netlink message. 

1) We may have route lifetime larger than INT_MAX.
In that case we had wired value in lifetime.
Use INT_MAX if lifetime does not fit in s32.

2) Lifetime is valid iif RTF_EXPIRES is set.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
This commit is contained in:
YOSHIFUJI Hideaki 2008-05-13 02:52:55 +09:00
parent 20c61fbd8d
commit 36e3deae8b
1 changed files with 6 additions and 2 deletions
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8
net/ipv6/route.c
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@ -2196,8 +2196,12 @@ static int rt6_fill_node(struct sk_buff *skb, struct rt6_info *rt,
NLA_PUT_U32(skb, RTA_PRIORITY, rt->rt6i_metric);
expires = (rt->rt6i_flags & RTF_EXPIRES) ?
rt->rt6i_expires - jiffies : 0;
if (!(rt->rt6i_flags & RTF_EXPIRES))
expires = 0;
else if (rt->rt6i_expires - jiffies < INT_MAX)
expires = rt->rt6i_expires - jiffies;
else
expires = INT_MAX;
if (rtnl_put_cacheinfo(skb, &rt->u.dst, 0, 0, 0,
expires, rt->u.dst.error) < 0)