From da6185d8743704bf7647c0aedaf8c7879d8f3cab Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Tue, 24 Feb 2009 23:34:48 -0800 Subject: [PATCH] gre: used time_before for comparing jiffies The functions time_before is more robust for comparing jiffies against other values. Signed-off-by: Wei Yongjun Signed-off-by: David S. Miller --- net/ipv4/ip_gre.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 07a188afb3ac..e62510d5ea5a 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -491,7 +491,7 @@ static void ipgre_err(struct sk_buff *skb, u32 info) if (t->parms.iph.ttl == 0 && type == ICMP_TIME_EXCEEDED) goto out; - if (jiffies - t->err_time < IPTUNNEL_ERR_TIMEO) + if (time_before(jiffies, t->err_time + IPTUNNEL_ERR_TIMEO)) t->err_count++; else t->err_count = 1; @@ -803,7 +803,8 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev) #endif if (tunnel->err_count > 0) { - if (jiffies - tunnel->err_time < IPTUNNEL_ERR_TIMEO) { + if (time_before(jiffies, + tunnel->err_time + IPTUNNEL_ERR_TIMEO)) { tunnel->err_count--; dst_link_failure(skb); -- 2.20.1