[PATCH 197/241] ipv6: Set default hoplimit as zero.

[Herton Ronaldo Krzesinski]

3.5.7.2 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Li RongQing <roy.qing.li at gmail.com>

commit 14edd87dc67311556f1254a8f29cf4dd6cb5b7d1 upstream.

Commit a02e4b7dae4551(Demark default hoplimit as zero) only changes the
hoplimit checking condition and default value in ip6_dst_hoplimit, not
zeros all hoplimit default value.

Keep the zeroing ip6_template_metrics[RTAX_HOPLIMIT - 1] to force it as
const, cause as a37e6e344910(net: force dst_default_metrics to const
section)

Signed-off-by: Li RongQing <roy.qing.li at gmail.com>
Signed-off-by: David S. Miller <davem at davemloft.net>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski at canonical.com>
---
 net/ipv6/route.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index a3ef2ad..fd44184 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -205,7 +205,7 @@ static struct dst_ops ip6_dst_blackhole_ops = {
 };
 
 static const u32 ip6_template_metrics[RTAX_MAX] = {
-	[RTAX_HOPLIMIT - 1] = 255,
+	[RTAX_HOPLIMIT - 1] = 0,
 };
 
 static struct rt6_info ip6_null_entry_template = {
@@ -1135,7 +1135,7 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
 	rt->rt6i_dst.addr = fl6->daddr;
 	rt->rt6i_dst.plen = 128;
 	rt->rt6i_idev     = idev;
-	dst_metric_set(&rt->dst, RTAX_HOPLIMIT, 255);
+	dst_metric_set(&rt->dst, RTAX_HOPLIMIT, 0);
 
 	spin_lock_bh(&icmp6_dst_lock);
 	rt->dst.next = icmp6_dst_gc_list;
-- 
1.7.9.5