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[IPV4]: Fix BUG of ip_rt_send_redirect()

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Fix the redirect packet of the router if the jiffies wraparound.

Signed-off-by: Li Yewang <lyw@nanjing-fnst.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Li Yewang 2006-12-18 00:26:35 -08:00 committed by David S. Miller
parent a9fc00cca8
commit 14fb8a7647
1 changed files with 2 additions and 1 deletions
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3
net/ipv4/route.c
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@ -1325,7 +1325,8 @@ void ip_rt_send_redirect(struct sk_buff *skb)
/* Check for load limit; set rate_last to the latest sent /* Check for load limit; set rate_last to the latest sent
* redirect. * redirect.
*/ */
if (time_after(jiffies, if (rt->u.dst.rate_tokens == 0 ||
time_after(jiffies,
(rt->u.dst.rate_last + (rt->u.dst.rate_last +
(ip_rt_redirect_load << rt->u.dst.rate_tokens)))) { (ip_rt_redirect_load << rt->u.dst.rate_tokens)))) {
icmp_send(skb, ICMP_REDIRECT, ICMP_REDIR_HOST, rt->rt_gateway); icmp_send(skb, ICMP_REDIRECT, ICMP_REDIR_HOST, rt->rt_gateway);