[PATCH 3.16 168/212] ipv4: mask tos for input route

[Ben Hutchings]

3.16.44-rc1 review patch.  If anyone has any objections, please let me know.

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

From: Julian Anastasov <j...@ssi.bg>

commit 6e28099d38c0e50d62c1afc054e37e573adf3d21 upstream.

Restore the lost masking of TOS in input route code to
allow ip rules to match it properly.

Problem [1] noticed by Shmulik Ladkani <shmulik.ladk...@gmail.com>

[1] http://marc.info/?t=137331755300040&r=1&w=2

Fixes: 89aef8921bfb ("ipv4: Delete routing cache.")
Signed-off-by: Julian Anastasov <j...@ssi.bg>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
 net/ipv4/route.c | 1 +
 1 file changed, 1 insertion(+)

--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1879,6 +1879,7 @@ int ip_route_input_noref(struct sk_buff
 {
        int res;
 
+       tos &= IPTOS_RT_MASK;
        rcu_read_lock();
 
        /* Multicast recognition logic is moved from route cache to here.