From: Li Yewang <lyw@nanjing-fnst.com>
Date: Mon, 18 Dec 2006 08:26:35 +0000 (-0800)
Subject: [IPV4]: Fix BUG of ip_rt_send_redirect()
X-Git-Tag: v2.6.20-rc2~90
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=14fb8a764786e37ac26a2175638115f21980e5a3;p=linux-2.6

[IPV4]: Fix BUG of ip_rt_send_redirect()

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>
---

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 1aaff0a2e0..2daa0dc19d 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1325,7 +1325,8 @@ 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);