[PATCH 3.18 106/145] ipv4: mask tos for input route

Greg Kroah-Hartman
2017-04-16T11:07:27Z

From: Julian Anastasov <ja@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.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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
net/ipv4/route.c | 1 +
1 file changed, 1 insertion(+)

--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1835,6 +1835,7 @@ 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.