From: Ivan Vecera <ivecera@redhat.com>
Date: Tue, 3 Jun 2008 21:37:53 +0200
Subject: [net] fix the redirected packet if jiffies wraps
Message-id: 48459D91.9050204@redhat.com
O-Subject: [RHEL5 PATCH] Router can not send the redirect packet if the jiffies has been wraparound
Bugzilla: 445536
RH-Acked-by: Neil Horman <nhorman@redhat.com>
RH-Acked-by: Rik van Riel <riel@redhat.com>
RH-Acked-by: David S. Miller <davem@redhat.com>
RH-Acked-by: Prarit Bhargava <prarit@redhat.com>

BZ: https://bugzilla.redhat.com/show_bug.cgi?id=445536

Description:
The same patch as for RHEL-4 (BZ428934).

Upstream status:
http://git.kernel.org/?p=linux/kernel/git/davem/net-2.6.git;a=commitdiff;h=14fb8a764786e37ac26a2175638115f21980e5a3;hp=a9fc00cca8327dba3ec2a6c727f4b5b1c449f2a2

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 5fd3ed0..fb12ab9 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1319,7 +1319,8 @@ void ip_rt_send_redirect(struct sk_buff *skb)
 	/* Check for load limit; set rate_last to the latest sent
 	 * redirect.
 	 */
-	if (time_after(jiffies,
+	if (rt->u.dst.rate_tokens == 0 ||
+	    time_after(jiffies,
 		       (rt->u.dst.rate_last +
 			(ip_rt_redirect_load << rt->u.dst.rate_tokens)))) {
 		icmp_send(skb, ICMP_REDIRECT, ICMP_REDIR_HOST, rt->rt_gateway);