From: David Ahern <dsahern@gmail.com>
Date: Wed, 21 Feb 2018 11:00:54 -0800
Subject: net: ipv4: Set addr_type in hash_keys for forwarded case
Patch-mainline: v4.16-rc3
Git-commit: 1fe4b1184c2ae2bfbf9e8b14c9c0c1945c98f205
References: bsc#1076830

The result of the skb flow dissect is copied from keys to hash_keys to
ensure only the intended data is hashed. The original L4 hash patch
overlooked setting the addr_type for this case; add it.

Fixes: bf4e0a3db97eb ("net: ipv4: add support for ECMP hash policy choice")
Reported-by: Ido Schimmel <idosch@idosch.org>
Signed-off-by: David Ahern <dsahern@gmail.com>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Michal Kubecek <mkubecek@suse.cz>

---
 net/ipv4/route.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index d67a9c8ddaf4..2c98b7a95a1d 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1827,6 +1827,8 @@ int fib_multipath_hash(const struct fib_info *fi, const struct flowi4 *fl4,
 				return skb_get_hash_raw(skb) >> 1;
 			memset(&hash_keys, 0, sizeof(hash_keys));
 			skb_flow_dissect_flow_keys(skb, &keys, flag);
+
+			hash_keys.control.addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS;
 			hash_keys.addrs.v4addrs.src = keys.addrs.v4addrs.src;
 			hash_keys.addrs.v4addrs.dst = keys.addrs.v4addrs.dst;
 			hash_keys.ports.src = keys.ports.src;
-- 
2.16.2