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Subject[PATCH 3.16 152/245] vxlan: fix tos value before xmit
3.16.83-rc1 review patch.  If anyone has any objections, please let me know.

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

From: Hangbin Liu <liuhangbin@gmail.com>

commit 71130f29979c7c7956b040673e6b9d5643003176 upstream.

Before ip_tunnel_ecn_encap() and udp_tunnel_xmit_skb() we should filter
tos value by RT_TOS() instead of using config tos directly.

vxlan_get_route() would filter the tos to fl4.flowi4_tos but we didn't
return it back, as geneve_get_v4_rt() did. So we have to use RT_TOS()
directly in function ip_tunnel_ecn_encap().

Fixes: 206aaafcd279 ("VXLAN: Use IP Tunnels tunnel ENC encap API")
Fixes: 1400615d64cf ("vxlan: allow setting ipv6 traffic class")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/net/vxlan.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -1904,7 +1904,7 @@ static void vxlan_xmit_one(struct sk_buf
return;
}

- tos = ip_tunnel_ecn_encap(tos, old_iph, skb);
+ tos = ip_tunnel_ecn_encap(RT_TOS(tos), old_iph, skb);
ttl = ttl ? : ip4_dst_hoplimit(&rt->dst);

err = vxlan_xmit_skb(vxlan->vn_sock, rt, skb,
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