netdev - [PATCH net] ipv4: mask tos for input route

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Message-Id: <1488122075-23952-1-git-send-email-ja@ssi.bg>
Date:   Sun, 26 Feb 2017 17:14:35 +0200
From:   Julian Anastasov <ja@....bg>
To:     David Miller <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, Shmulik Ladkani <shmulik.ladkani@...il.com>
Subject: [PATCH net] ipv4: mask tos for input route

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@...il.com>

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

Fixes: 89aef8921bfb ("ipv4: Delete routing cache.")
Signed-off-by: Julian Anastasov <ja@....bg>
---
 net/ipv4/route.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 584ed66..8471dd1 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -2009,6 +2009,7 @@ 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.
-- 
1.9.3