ipv4: mask tos for input route

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.ladkani@gmail.com>

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

Fixes: 89aef8921bfb ("ipv4: Delete routing cache.")
Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Willy Tarreau <w@1wt.eu>

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index e59d6332458bcd62a8c9cb216e8bb22a82254820..d9c7913436382c30aeb7b474b988bfade60e1626 100644 (file)
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1789,6 +1789,7 @@ int ip_route_input_noref(struct sk_buff *skb, __be32 daddr, __be32 saddr,
 {
        int res;
 
+       tos &= IPTOS_RT_MASK;
        rcu_read_lock();
 
        /* Multicast recognition logic is moved from route cache to here.