netdev - [PATCH] ipv4: Fix time difference calculation in rt_bind

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Date:	Thu, 19 Jul 2012 08:50:38 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	netdev@...r.kernel.org
Subject: [PATCH] ipv4: Fix time difference calculation in
 rt_bind_exception().


Reported-by: Steffen Klassert <steffen.klassert@...unet.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
---
 net/ipv4/route.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index f67e702..2c25581 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1907,7 +1907,7 @@ static void rt_bind_exception(struct rtable *rt, struct fib_nh *nh, __be32 daddr
 		if (fnhe->fnhe_daddr == daddr) {
 			if (fnhe->fnhe_pmtu) {
 				unsigned long expires = fnhe->fnhe_expires;
-				unsigned long diff = jiffies - expires;
+				unsigned long diff = expires - jiffies;
 
 				if (time_before(jiffies, expires)) {
 					rt->rt_pmtu = fnhe->fnhe_pmtu;
-- 
1.7.10.4

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